Journal articles: 'EBG Substrate'

1

Zhu, S., and R. Langley. "Dual-band wearable antennas over EBG substrate." Electronics Letters 43, no. 3 (2007): 141. http://dx.doi.org/10.1049/el:20073151.

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Zhang, Xiaoyan, Zhaopeng Teng, Zhiqing Liu, and Bincheng Li. "A Dual Band Patch Antenna with a Pinwheel-Shaped Slots EBG Substrate." International Journal of Antennas and Propagation 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/815751.

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A dual band microstrip patch antenna integrated with pinwheel-shaped electromagnetic band-gap (EBG) structures is proposed. The patch antenna consists of a pair of spiral slots on the patch and is fed by using coaxial line. Its full-wave simulation predicts dual bands from 4.43 GHz to 4.56 GHz and from 4.96 GHz to 5.1 GHz in the C-band. The designed EBG with eight pinwheel-shaped slots addresses smaller frequency drift compared with the traditional square mushroom-like EBG when applied to the patch antenna. With the help of designed EBG structure, the impedance bandwidth, radiation efficiency, and gain of the patch antenna are improved significantly. The 10 dB impedance bandwidth is extended by 3.4% and 6.5% at the low- and high-frequency bands, respectively. The radiation efficiency is increased by 5% and 17.8%, and the realized gain is enhanced by 1.87 dB and 1.56 dB at 4.57 GHz and 5.06 GHz, respectively. The designed EBG structure may have many applications in other types of planar antennas.

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Aktar, Mst Nargis. "Parametric Performance Analysis of Patch Antenna Using EBG Substrate." International Journal of Wireless & Mobile Networks 4, no. 5 (2012): 79–88. http://dx.doi.org/10.5121/ijwmn.2012.4506.

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Zhu, Shaozhen, and Richard Langley. "Dual-Band Wearable Textile Antenna on an EBG Substrate." IEEE Transactions on Antennas and Propagation 57, no. 4 (2009): 926–35. http://dx.doi.org/10.1109/tap.2009.2014527.

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Ikeuchi, R., and A. Hirata. "Dipole Antenna Above EBG Substrate for Local SAR Reduction." IEEE Antennas and Wireless Propagation Letters 10 (2011): 904–6. http://dx.doi.org/10.1109/lawp.2011.2167119.

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Hall, B. G., P. W. Betts, and J. C. Wootton. "DNA sequence analysis of artificially evolved ebg enzyme and ebg repressor genes." Genetics 123, no. 4 (1989): 635–48. http://dx.doi.org/10.1093/genetics/123.4.635.

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Abstract The ebg system has been used as a model to study the artificial selection of new catalytic functions of enzymes and of inducer specificities of repressors. A series of mutant enzymes with altered catalytic specificities were previously characterized biochemically as were the changes in inducer specificities of mutant, but fully functional, repressors. The wild type ebg operon has been sequenced, and the sequence differences of the mutant enzymes and repressors have been determined. We now report that, contrary to our previous understanding, ebg enzyme contains 180-kD alpha-subunits and 20-kD beta-subunits, both of which are required for full activity. Mutations that dramatically affect substrate specificity and catalytic efficiency lie in two distinct regions, both well outside of the active site region. Mutations that affect inducer specificity of the ebg repressor lie within predicted sugar binding domains. Comparisons of the ebg beta-galactosidase and repressor with homologous proteins of the Escherichia coli and Klebsiella pneumoniae lac operons, and with the galactose operon repressor, suggest that the ebg and lac operons diverged prior to the divergence of E. coli from Klebsiella. One case of a triple substitution as the consequence of a single event is reported, and the implications of that observation for mechanisms of spontaneous mutagenesis are discussed.

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Dewan, Raimi, M. K.A. Rahim, M. R. Hamid, M. E. Jalil, and H. A. Majid. "Mutual Coupling Reduction in Antenna Using EBG on Double Substrate." TELKOMNIKA (Telecommunication Computing Electronics and Control) 15, no. 2 (2017): 799. http://dx.doi.org/10.12928/telkomnika.v15i1.6123.

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Dewan, Raimi, M. K.A. Rahim, M. R. Hamid, M. E. Jalil, and H. A. Majid. "Mutual Coupling Reduction in Antenna Using EBG on Double Substrate." TELKOMNIKA (Telecommunication Computing Electronics and Control) 15, no. 2 (2017): 799. http://dx.doi.org/10.12928/telkomnika.v15i2.6123.

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Yang, Hong, Dan Liu, and Wei Chen. "Research and Design of Magnetic Substrate Microstrip Antenna with Electromagnetic Band-Gap Structure." Applied Mechanics and Materials 685 (October 2014): 314–19. http://dx.doi.org/10.4028/www.scientific.net/amm.685.314.

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Based on the magnetic materials (JV-5) substrate, Double L-shaped slot microstrip antenna is designed. The bandwidth is over 2 times that of the normal substrate and a 40% reduction in size happens.. On this basis, the microstrip antenna with magnetic substrate EBG structure is designed and the EBG structure uses the corrosive effects of joint floor, namely getting periodic H-shaped and circular structures by the floor corrosion, and performing a simulation with HFSS14.0. The results show that the EBG structure of magnetic material having a prominent advantage of the miniaturization and bandwidth-broaden compared to a microstrip antenna with non-magnetic materials substrate, resulting in more than 10% relative bandwidth and a slight gain loss. To some degree, introducing EBG structure can reduce the size of the antenna and increase its bandwidth, and it also improve the gain and radiation characteristics of the antenna.Key words: EBG structure; magnetic material;Double L-shaped slot microstrip antenna; gain

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Wang, Zhong Qing, Li Dan Peng, Bao Li, and Rong Sen Xu. "Study on Band-Gap Characteristics of EBG Material and its Application in Microstrip Antenna." Applied Mechanics and Materials 391 (September 2013): 512–15. http://dx.doi.org/10.4028/www.scientific.net/amm.391.512.

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In this letter, the characteristics of electromagnetic band-gap (EBG) material are studied, and then a novel microstrip antenna is proposed by using EBG structure. The antenna is constituted with loading the EBG structure into the dielectric substrate. The size of microstrip patch in EBG antenna with the coaxial feed is only 0.22×0.22 whereis the free space wavelength at 5.22 GHz, which the microstrip antenna is designed by the technique of patch grooved and short pin. The simulation results show that the EBG antenna has two resonant frequencies at 5.22GHz and 5.68GHz, the gains of them reaching to 5.32dB, 4.98dB respectively. Moreover, it has a good impedance matching in 5.14GHz~5.86GHz, which covers two bandwidths of WLAN.

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Gopalakrishnan, Ramakrishnan, Sivakumar Rajagopal, Sai Viswanth Reddy, and Anirudh E. R. "Identification of Most Suitable Dielectrics Substrate for UWB Bandpass Filter." ECS Transactions 107, no. 1 (2022): 431–38. http://dx.doi.org/10.1149/10701.0431ecst.

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Identification of a suitable substrate is a critical parameter in the design of microstrip bandpass filters. In this work, the performance of an Ultra Wideband (UWB) bandpass filter based on Electromagnetic Bandgap (EBG) resonators are designed, fabricated, and analyzed. Printed Circuit Board (PCB) with suitable dielectric substrates are used extensively to develop microstrip lines. The filter is fabricated using RT Duroid substrate material and compared with FR4 and Alumina dielectric substrates and the performance results show that the best result is obtained with RT Duroid.

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Borazjani, O., M. Naser-Moghadasi, J. Rashed-Mohassel, and R. A. Sadeghzadeh. "Bandwidth improvement of planar antennas using a single-layer metamaterial substrate for X-band application." International Journal of Microwave and Wireless Technologies 12, no. 9 (2020): 906–14. http://dx.doi.org/10.1017/s1759078720000264.

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AbstractTo prevent far-field radiation characteristics degradation while increasing bandwidth, an attempt has been made to design and fabricate a microstrip antenna. An electromagnetic band gap (EBG) structure, including a layer of a metallic ring on a layer of Rogers 4003C substrate, is used. For a better design, a patch antenna with and without the EBG substrate has been simulated. The results show that the bandwidth can be improved up to 1.6 GHz in X-band by adding the EBG substrate. Furthermore, using this structure, a dual-band antenna was obtained as well. Finally, to validate the simulation results, a comparison has been done between simulation data and experimental results which demonstrate good agreement.

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Wissem, EL May, Imen Sfar, Lotfi Osman, and Jean-Marc Ribero. "A Textile EBG-Based Antenna for Future 5G-IoT Millimeter-Wave Applications." Electronics 10, no. 2 (2021): 154. http://dx.doi.org/10.3390/electronics10020154.

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A millimeter-wave (mmWave) textile antenna operating at 26 GHz band for 5G cellular networks is proposed in this paper. The electromagnetic characterization of the textile fabric used as substrate at the operating frequency was measured. The textile antenna was integrated with an electromagnetic bandgap (EBG) structure and placed on a polyester fabric substrate around the antenna. Results showed that the proposed EBG significantly improved the performance of the antenna. The gain and energy efficiency at 26 GHz were 8.65 dBi and 61%, respectively (an increase of 2.52 dB and 7% compared to a conventional antenna), and the specific absorption rate (SAR) was reduced by more than 69.9%. Good impedance matching of the fabricated antenna at the desired frequency was observed when it was bent and worn on the human body. The structure is simple, compact, and easy to manufacture. It may well be suitable for integration into applied clothing in various fields, especially for future IoT applications.

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Kumar, Anand, Dinesh Kumar, Jitendra Mohan, and Hari Om Gupta. "Investigation of grid metamaterial and EBG structures and its application to patch antenna." International Journal of Microwave and Wireless Technologies 7, no. 6 (2014): 705–12. http://dx.doi.org/10.1017/s1759078714000944.

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In this paper, we propose a new design of metamaterial and electromagnetic bandgap (EBG) structure based on double layers of metallic grids. Using finite integration technique, the electromagnetic properties of the grid structure have been investigated and this structure has been employed to enhance the performance of a patch antenna working at 11 GHz. The surface waves in the substrate of antenna have been suppressed by EBG behavior of the grid when used as a substrate, and it improves its gain to 9.21 dB from 5.64 dB. When this structure is also used as superstrate of the antenna, the gain up to 13 dB has been achieved due to its metamaterial behavior. Congregation effect of metamaterial provides a huge improvement in the directionality of the antenna and its half power beam width (HPBW) has been improved to 32.7° and 31.5° from 108.3° and 93.5° in E-and H-planes, respectively.

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Hediya, Alaa M., Ahmed Mohamed Attiya, and Walid S. El-Deeb. "5G MIMO ANTENNA SYSTEM BASED ON PATCHED FOLDED ANTENNA WITH EBG SUBSTRATE." Progress In Electromagnetics Research M 109 (2022): 149–61. http://dx.doi.org/10.2528/pierm22020101.

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., Gaurav Kumar Sharma. "IMPROVING THE PERFORMANCE PARAMETERS OF MICROSTRIP PATCH ANTENNA BY USING EBG SUBSTRATE." International Journal of Research in Engineering and Technology 02, no. 12 (2013): 111–15. http://dx.doi.org/10.15623/ijret.2013.0212019.

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Şimşek, Serkan, and Sasan Ahdi Rezaeieh. "A design method for substrate integrated waveguide electromagnetic bandgap (SIW-EBG) filters." AEU - International Journal of Electronics and Communications 67, no. 11 (2013): 981–83. http://dx.doi.org/10.1016/j.aeue.2013.05.009.

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Wang, Encheng, and Qiuping Liu. "GPS PATCH ANTENNA LOADED WITH FRACTAL EBG STRUCTURE USING ORGANIC MAGNETIC SUBSTRATE." Progress In Electromagnetics Research Letters 58 (2016): 23–28. http://dx.doi.org/10.2528/pierl15102105.

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Aldemerdash, M., A. Mitkees, and H. Almekaty. "A Butler Matrix Fed Two-Element Microstrip Antenna Array over EBG Substrate." International Conference on Aerospace Sciences and Aviation Technology 14, AEROSPACE SCIENCES (2011): 1–11. http://dx.doi.org/10.21608/asat.2011.23420.

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Wang, Chao, Liang Zhang, Shenbing Wu, Shijie Huang, Changqing Liu, and Xianliang Wu. "A Dual-band Monopole Antenna with EBG for Wearable Wireless Body Area Networks." Applied Computational Electromagnetics Society 36, no. 1 (2021): 48–54. http://dx.doi.org/10.47037/2020.aces.j.360107.

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This paper proposes a dual-band wearable monopole antenna adopting an electromagnetic bandgap (EBG) structure, which operates at 2.45 and 5.8 GHz ISM bands and is suitable for wearable applications. Both the monopole antenna and the EBG structure are fabricated on an F4B semi-flexible substrate having a dielectric constant of 2.2. The EBG structure effectively isolates the human body from the radiation of the antenna and reduces the specific absorption rate (SAR) of it by more than 97.5%. This improves the antenna gain and the peak gain reaches 9.1 dBi at 5.8 GHz. The wearable performance of the antenna showed that it can sustain good performance even under realistic human body loading. Besides, the antenna has a small size, which makes it ideal for wearable applications.

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Bora, Pronami, Pokkunuri Pardhasaradhi, and Boddapati Madhav. "Design and Analysis of EBG Antenna for Wi-Fi, LTE, and WLAN Applications." Applied Computational Electromagnetics Society 35, no. 9 (2020): 1030–36. http://dx.doi.org/10.47037/2020.aces.j.350908.

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A non-planar electromagnetic band gap (EBG) structured antenna is proposed in this paper for wireless communication applications. The proposed design consists of coplanar waveguide (CPW) fed square patch antenna embedded with triangular EBG backing on FR-4 substrate material for 2.4 GHz (Wi-Fi, LTE) and 5.2 GHz (WLAN) applications. Gain is improved from 2.8 dB to 13.9 dB by adding EBG structure in the proposed antenna and the parametric analysis is done for optimizing the antenna performance characteristics. The proposed antenna provides a maximum efficiency of 82.5% in the resonating frequencies. The prototyped antenna is having good correlation with the simulation results obtained from Finite Element Method (FEM) based Anyss-HFSS. High Frequency Structure Simulator is used to analyze the antenna parameters and the simulated and measured results are correlating well with each other with a slight change in frequencies.

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Lu, Xuesong, Yoonjae Lee, Shoufeng Yang, Yang Hao, Julian Evans, and Clive Parini. "Extrusion freeforming of millimeter wave electromagnetic bandgap (EBG) structures." Rapid Prototyping Journal 15, no. 1 (2009): 42–51. http://dx.doi.org/10.1108/13552540910925054.

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PurposeThe aim of this paper is to provide an easy method of extrusion freeforming to fabricate microwave electromagnetic bandgap (EBG) crystals. EBG crystals are periodic dielectric structures that can block wave propagation and generate a bandgap. These crystals can be used in high capability antennae, electromagnetic wave semiconductors, microresonators, high‐reflectivity mirrors and polarizing beam splitters.Design/methodology/approachThe effects of extrusion process parameters and paste characteristics were investigated. Finally, one‐period and two‐period woodpile EBG crystals with bandgaps in the frequency region of 90‐110 GHz were fabricated and the bandgap was measured.FindingsThe filament diameter is influenced by whether extrusion is carried out with or without a substrate and by the free fall‐distance from the nozzle. The quality of lattice structures is dependent on paste flow and properties. A ceramic paste with 60 vol. % (the fraction of ceramic powder based on solvent‐free polymer) was well suited to fabrication. The solvent content also influenced the fabrication. The experimental results show that under ∼12 per cent solvent mass fraction in the paste and relatively high extrusion ram velocity (more than 0.014 mm/s) at a pressure of 14 MPa, samples with high quality were fabricated.Originality/valueThis paper demonstrates that the rapid prototyping method of extrusion freeforming can be applied for the fabrication of EBG crystals from ceramic powders and the important factors which influence the product quality are identified.

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Kong, Linghui, Sen Yan, Vladimir Volskiy, Binke Huang, and Guy A. E. Vandenbosch. "Leaky Wave Array in Full Planar Substrate with EBG-Based Wave Guiding Channel." International Journal of Antennas and Propagation 2021 (May 24, 2021): 1–10. http://dx.doi.org/10.1155/2021/5527445.

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A new type of wave guiding structure is proposed is this paper. The guiding channel is developed on the full planar dielectric substrate and aligned with electromagnetic bandgap (EBG) units. Since the bandgap of these mushroom-like units is calculated with a coverage of the channel working band, these units are of great importance on ensuring the transmission efficiency and eliminating the coupling effect between channels. Then, this wave guiding structure is extended to the design of a six-element leaky wave antenna array with a complete size of 25.6 mm × 80.6 mm, which is working at Ku band from 12.0 GHz to 12.8 GHz and achieving a bandwidth of about 0.8 GHz, a gain of 11.36 dBi, and an efficiency of ca. 86.7% at 12.0 GHz. Within the working frequency band, this antenna topology achieves a frequency-dependent beam scanning in the forward directions, and it offers a potential for radar application on road speed detecting with low costs.

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Kim, Sangkil, Yu-Jiun Ren, Hoseon Lee, Amin Rida, Symeon Nikolaou, and Manos M. Tentzeris. "Monopole Antenna With Inkjet-Printed EBG Array on Paper Substrate for Wearable Applications." IEEE Antennas and Wireless Propagation Letters 11 (2012): 663–66. http://dx.doi.org/10.1109/lawp.2012.2203291.

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Gu, Y. Y., W. X. Zhang, and Z. C. Ge. "Two Improved Fabry-perot Resonator Printed Antennas using EBG Superstrate and AMC Substrate." Journal of Electromagnetic Waves and Applications 21, no. 6 (2007): 719–28. http://dx.doi.org/10.1163/156939307780749147.

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Ash-Shiddiq, Haniifah Arif, Harfan Hian Ryanu, and Levy Olivia Nur. "WEARABLE ANTENNA DUAL BAND WITH ELECTROMAGNETIC BAND GAP (EBG) STRUCTURE FOR HEALTH APPLICATIONS." [CEPAT] Journal of Computer Engineering: Progress, Application and Technology 2, no. 01 (2023): 42. http://dx.doi.org/10.25124/cepat.v2i01.5811.

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Telemedicine can solve several issues in the healthcare system. The wearable antenna works with the Industrial, Scientific, and Medical (ISM) band for wireless body area network (WBAN) communications. Wearable antennas are lightweight, easy to make, and so on. This antenna application's bandwidth is limited by the thin substrate. This research will create a wearable planar monopole antenna with a circular patch that can operate at 2,4 and 5,8 GHz. Antenna without the UC-EBG structure and antenna with the UC-EBG structure were tested. The simulation results without UC-EBG show that the return loss is -14.629 dB and -28,639 dB, the VSWR is 1,456 and 1,077, the bandwidth is 4988 MHz, and the gain is 2,517 dBi and 4,270 dBi. The simulation results with the addition of UC-EBG show that the return loss is -13,835 dB and -17,46 dB, the VSWR is 1,511 and 1,309, the bandwidth is 1480 MHz and 2320 MHz, and the gain is 2,869 dBi and 5,208 dBi. The measurement results with UC-EBG show that the return loss is -13,134 dB and -18,421 dB, the VSWR is 1,566 and 1,273, the bandwidth is 1080 MHz and 960 MHz, and the gain is 2,198 dBi and 4,98 dBi.

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Abdulhameed, M. K., M. S. Mohamad Isa, Z. Zakaria, Mowafak K. Mohsin, and Mothana L. Attiah. "Mushroom-Like EBG to Improve Patch Antenna Performance For C-Band Satellite Application." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 5 (2018): 3875. http://dx.doi.org/10.11591/ijece.v8i5.pp3875-3881.

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In order to suppress the surface waves excitation that are caused by thick substrate in a patch antenna, a mushroom-like EBG (Electromagnetic Band Gap) structure is used. Such structures enhance its characteristics of gain, directivity, bandwidth and efficiency. Firstly, we determined frequency band gap characteristics of mushroom like EBG unit cell value by using CST software with 3mm (0.06λo) for covering 6 GHz. The periodic arrangement of such mushroom-like EBG structures was not limited by any interconnecting microstrip lines. Four columns of EBGs shifted inwards to antenna edges by 0.3mm (0.06λo) or a gap of its design around the patch from the left and right sides. Different configurations were also examined in order to get the better improvement in antenna performance. The final design of this mushroom-like shifted periodic structure shows an effective increase in the directivity by 77%, gain by 108%, bandwidth by 29% and the efficiency by 20% for the antenna. This structure has diversified application possibility for wireless and satellite communications.

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Alnaiemy, Yahiea, Taha A. Elwi, and Lajos Nagy. "Mutual Coupling Reduction in Patch Antenna Array Based on EBG Structure for MIMO Applications." Periodica Polytechnica Electrical Engineering and Computer Science 63, no. 4 (2019): 332–42. http://dx.doi.org/10.3311/ppee.14379.

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This paper presents a printed rectangular slot microstrip antenna array of two elements based on an Electromagnetic Band Gap (EBG) structure. The proposed EBG structure is invented to improve the isolation between the radiating elements for multiple-input multiple-output (MIMO) application. Single and two slotted rectangular microstrip antennas are designed on an FR-4 substrate with a dielectric constant (εr) of 4.3 and loss tangent (tanδ) of 0.025 with thickness of 1.6 mm. The proposed EBG structure is designed as one planar row of 24 slots. The proposed array performance is tested numerically using Computer Simulation Technology Microwave Studio (CSTMW) of Finite Integration Technique (FIT) formulations. The antenna performance in terms of reflection coefficient (S11), isolation coefficient (S21), radiation patterns, boresight gain and Envelope Correlation Coefficient (ECC) are investigated before and after introducing the EBG structure to identify the significant enhancements. The proposed EBG structure is located between the radiating antenna elements to reduce the mutual coupling of the proposed antenna array. The edge to edge separation distance of the proposed antennas is λ0/16, where the λ0 is the free space wavelength at 2.45 GHz. The simulated results show a significant isolation enhancement from –6 dB to –29 dB at the first resonant frequency 2.45 GHz and from –10 dB to –25 dB at the second resonant frequency 5.8 GHz after introducing the EBG structure to the antenna array.

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Kumar, Saurabh, and Dinesh Kumar Vishwakarma. "Miniaturized curved slotted patch antenna over a fractalized EBG ground plane." International Journal of Microwave and Wireless Technologies 9, no. 3 (2016): 599–605. http://dx.doi.org/10.1017/s1759078716000052.

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In this paper, a miniaturized coaxial feed curved-slotted microstrip patch antenna over a fractalized uniplanar compact electromagnetic bandgap (F-UC-EBG) ground plane is proposed and investigated. Compact size is achieved by cutting the curved slots along the orthogonal directions of the patch radiator. The curved-slotted microstrip patch antenna is 38.30% miniaturized as compared with the conventional microstrip patch antenna resonating at 2.38 GHz. Furthermore, the ordinary ground plane of the curved slotted patch antenna is replaced by the F-UC-EBG ground plane. Due to the slow wave phenomenon created in the F-UC-EBG structure and the better impedance matching at the lower frequency further miniaturization and improved performance are obtained. The proposed antenna shows 74.76% miniaturization as compared with the conventional microstrip patch antenna resonating at 1.57 GHz and has 2.61% 10-dB fractional bandwidth, 1.49 dB gain, and 81.59% radiation efficiency. The proposed antenna is fabricated on a low-cost FR4 substrate having an overall volume of 0.184λ0 × 0.184λ0 × 0.0236λ0 at 1.57 GHz GPS band. The measured and simulated results are in good agreement and predicting appropriateness of the antenna in portable and handheld communication systems for GPS applications.

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Mukherjee, Biswajeet, Shashank Tiwari, and Ajay Lal Samariya. "Improvement in radiation losses of spur line resonators based LPF on an EBG substrate." International Journal of Applied Electromagnetics and Mechanics 41, no. 4 (2013): 447–55. http://dx.doi.org/10.3233/jae-121635.

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Shaban, Hanem F., Hamdy A. Elmikaty, and Abdelhamid A. Shaalan. "STUDY THE EFFECTS OF ELECTROMAGNETIC BAND-GAP (EBG) SUBSTRATE ON TWO PATCH MICROSTRIP ANTENNA." Progress In Electromagnetics Research B 10 (2008): 55–74. http://dx.doi.org/10.2528/pierb08081901.

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Ting-Kuang Wang, Tzu-Wei Han, and Tzong-Lin Wu. "A Novel Power/Ground Layer Using Artificial Substrate EBG for Simultaneously Switching Noise Suppression." IEEE Transactions on Microwave Theory and Techniques 56, no. 5 (2008): 1164–71. http://dx.doi.org/10.1109/tmtt.2008.921642.

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Li, Dan, Chuang-Ming Tong, Jun-Song Bao, Peng Peng, and Ding-Wang Yu. "A NOVEL BANDPASS FILTER OF SUBSTRATE INTEGRATED WAVEGUIDE (SIW) BASED ON S-SHAPED EBG." Progress In Electromagnetics Research Letters 36 (2013): 191–200. http://dx.doi.org/10.2528/pierl12110202.

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Rao, B. Venkateshwar, and Sunita Panda. "Optimal Design of Microstrip Antenna for UWB Applications using EBG Structure with the Aid of Pigeon Inspired Optimization Technique." International Journal of Electrical and Electronics Research 10, no. 4 (2022): 1315–20. http://dx.doi.org/10.37391/ijeer.100486.

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Ultra-wideband (UWB) technology has become influential among academic research and industry because of its vast application in the wireless world. However, several drawbacks have in UWB based antenna. To tackle this, EBG (Electromagnetic Band Gap) structures have proposed. Furthermore, the design of EBG structures is very complex due to the uncertain EBG properties dependence upon unit cell parameters. Therefore, to the optimal design of micro strip antenna for applications of UWB, EBG-PIO (pigeon inspired optimization) on the basis of micro strip patch antenna has been proposed to enhance micro strip antenna’s performance in terms of directivity, gain, bandwidth and efficiency. To select design parameters optimally, the PIO technique is proposed with substrate material of Rogers RT/Duroid 6010 with height h = 1.6 mm. Proposed antenna return loss remains –34.6 dB to cover applications of UWB (3.1–10.6 GHz). Also, results exhibited by both proposed technique and fabricated model-based antenna has outperformed than existing techniques regarding directivity, return loss, bandwidth, gain and radiation efficiency.

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Hasan, Bismah, and Kamran Raza. "Dual Band Slotted Printed Circular Patch Antenna With Superstrate and EBG Structure for 5G Applications." January 2019 38, no. 1 (2019): 227–38. http://dx.doi.org/10.22581/muet1982.1901.19.

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Slotted circular printed layered patch antenna is designed, simulated and fabricated for 5G (Fifth Generation) wireless communication applications. The antenna consists of slots in the main radiating circular patch element for miniaturizing the size of the radiating element and providing dual band radiation characteristics. The feed line is separated on bottom substrate layer with EBG (Electromagnetic Band-Gap) embedded for enhancing the gain characteristics of the antenna. Superstrate layer is also used for improving the gain of the antenna where the distance from the radiating antenna element is optimized for maximizing the impedance bandwidth and radiation characteristics. The feed realization and impedance matching of the radiating slotted circular patch antenna is done by inducing slot at the middle ground plane of the slot embedded circular patch antenna system. The proposed configuration provides power radiation gain values of more than 5 dB for the Ka band of communications, whereas the impedance bandwidth of the antenna is verified for the dual resonances at 27.5 and 28.5 GHz. Dual band radiation characteristics are attained by embedding and optimizing the slot length and width in the circular patch radiator element that is placed on the upper face of the substrate RT Rogers Duroid 5880 layer. The length of the microstrip feed line embedded in the lower layer of the substrate is optimized for providing required bandwidth characteristics for the dual frequency point radiations. The antenna configuration is designed, modeled and simulated in CST (Central Standard Time) Microwave studio. The antenna is fabricated and measured vs simulated frequency response, gain patterns and current density plots are presented for the verification of antenna operation in the desired frequency bands.

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Goussetis, G., A. P. Feresidis, and J. C. Vardaxoglou. "Tailoring the AMC and EBG Characteristics of Periodic Metallic Arrays Printed on Grounded Dielectric Substrate." IEEE Transactions on Antennas and Propagation 54, no. 1 (2006): 82–89. http://dx.doi.org/10.1109/tap.2005.861575.

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Babu, P. Raveendra, D. Ramakrishna, and Ginbar Ensermu. "Triple Band-Notch UWB Antenna Embedded with Slot and EBG Structures." Wireless Communications and Mobile Computing 2023 (April 11, 2023): 1–12. http://dx.doi.org/10.1155/2023/3461751.

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In this paper, a planar, compact pentagonal shaped ultrawideband antenna of microstrip line fed offering triple band-notched characteristics response is proposed and investigated. Triple band-notch response can be achieved by creating two inverted U-shaped slots of different size in pentagonal patch, and also electromagnetic band gap structure of hexagonal shape is created near the feed line of UWB antenna. To implement the proposed antenna, RT/DUROID 5880 substrate of 1.6 mm thickness is used. The designed antenna was successfully simulated, developed, and manufactured. The dimension of the suggested antenna is 36 mm × 33 mm × 1.6 mm and has a bandwidth of 3.1–10.6 GHz with a magnitude of S 11 < − 10 dB , the maximum pass band gain of 4.6 dB and with the exception of the 4.0–4.4 GHz (C-band satellite communication), 5.2–5.8 GHz (WLAN), and 8.0–8.25 GHz (X-band) frequency bands. The suggested antenna has a good return loss, a virtually omnidirectional radiation pattern, and a constant gain throughout operation.

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Hajlaoui, El Amjed. "A new compact dual band printed monopole antenna using electromagnetic band gap structures." Circuit World 43, no. 2 (2017): 56–62. http://dx.doi.org/10.1108/cw-11-2016-0061.

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Purpose The purpose of this paper is to present a new dual-band printed monopole antenna with a partial ground with two notched bands based on electromagnetic band gap (EBG) structures. A new type of EBG antenna with radiation patterns and antenna gains over the operating bands has been developed. Design/methodology/approach The proposed antenna consists of a pair of EBG structures using a transmission line model. The proposed antenna is designed on an FR4 substrate with a thickness of 1 mm and permittivity (er) = 4.3. Findings The measured results show good dual-band operations with −10 dB impedance bandwidths of 9.1 and 36.2 per cent centered at 2.45 and 6.364 GHz, respectively, which covers the wireless local area network (WLAN) operating bands. Originality/value A new type of EBG antenna with radiation patterns and antenna gains over the operating bands has been developed.

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Manikonda, Ramesh, Rajyalakshmi Valluri, and Mallikarjuna Rao Prudhivi. "J-slot EBG structure for SAR Reduction of Dual Band J-slot Textile Antenna." Indonesian Journal of Electrical Engineering and Computer Science 12, no. 2 (2018): 794. http://dx.doi.org/10.11591/ijeecs.v12.i2.pp794-802.

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In this article, the dual band is achieved with J-slot on rectangular Textile antenna on Jeans fabric as substrate. It resonates at the 2.4 GHz and 5.4 GHz of Wireless Body Area Network (WBAN) bands. The novel J-slot Electromagnetic Band Gap (EBG) array consists of 2x2 elements. It is used as superstrate of J-slot textile antenna for Specific Absorption Rate (SAR) reduction and gain enhancement. The Reflection coefficient and VSWR of dual band textile antenna are simulated and measured with and without human body.

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Sultana, Sadia, and Rinku Basak. "Performance Evaluation of Meander Line Implantable Antenna integrated with EBG Based Ground for Anatomical Realistic Model." AIUB Journal of Science and Engineering (AJSE) 18, no. 1 (2019): 1–10. http://dx.doi.org/10.53799/ajse.v18i1.16.

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A unique design and meander line implantable antenna is examined in this paper which satisfies the requirements of ultra-wide band. The designed antenna is integrated with the electromagnetic band gap (EBG) structure based ground plane to enhance the performance. Rectangular electromagnetic band gap (EBG) structures are represented here to evaluate the antenna performance. This compact and efficient MLA antenna is applied to improve the antenna performance for numerous implantable scenarios and biomedical applications. The proposed antenna with EGB ground plane is designed for both the simplified model and anatomical realistic models for the human body and executed the performance in bio-environment. To approve the results of implantable antennas more correctly, simulation is analyzed using anatomical realistic human models. The ultimate design has the whole dimension is 15.2 x 8.8 m2. The thickness of the antenna is about 0.8 mm. FR4 is chosen as the substrate material and Copper is chosen as the patch material. The antenna is enclosed biocompatible material with silicon inside the tissue in order to protect patient safety. Significant parameters such as S11 parameter, Far field (radiation pattern), VSWR, Efficiency, Directivity, Gain of the proposed antenna have calculated and measured the performance both the simplified and realistic human models. Comparison Analysis of S11 parameter for different substrate materials and patch materials have observed. The radiation mechanism and modified design of the implantable antenna reducing Specific Absorption Rate (SAR) for safety issues. All the simulation results and measurements are obtained from CST Microwave Studio to validate the design.

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Karuppiah, Vasudevan, and Raju Srinivasan. "Novel electromagnetic bandgap structure to mitigate simultaneous switching noise for mixed-signal system applications." International Journal of Microwave and Wireless Technologies 9, no. 2 (2016): 299–306. http://dx.doi.org/10.1017/s1759078716000040.

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This paper proposes a novel T-shape electromagnetic bandgap (EBG) structure to suppress simultaneous switching noise (SSN) in mixed-signal systems. Noise is generated due to simultaneous switching multiple drivers in the digital ICs. It is called as SSN. It could propagate between power and ground planes of underlying PCB platform and interfere with the functionality of nearby RF/Analog ICs. So, the RF modules are isolated from the digital module for proper functioning of entire mixed-signal system. A high-impedance surface, called T-shape EBG has been implemented between digital and RF modules. It will exhibit the characteristics of bandgap for a wide frequency range to suppress the propagation of switching noise. A single unit-cell of T-EBG is periodically patterned over one side of the PCB and the other side is kept continuous. In this paper different characteristics of T-EBG have been simulated and verified with the measurement results. A 3 × 3 T-EBG layout provides an isolation of −40 dB from 0.72 to 6.39 GHz. A scaled version of T-EBG is used to shift the bandgap towards higher frequency range from 2.22 to 7.19 GHz. Also, a novel layout methodology has been proposed to broaden the bandgap from 2.02 to 18.84 GHz without reducing the thickness of dielectric substrate.

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Rao, B. Venkateshwar, and Sunita Panda. "Design and Analysis of Compact Multiband Patch Antennas Using Electromagnetic Band Gap Structure for Wideband Applications." International Journal of Computer Science and Mobile Computing 9, no. 1 (2020): 161–70. http://dx.doi.org/10.47760/ijcsmc.2020.v09i01.001.

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This article presents the structural design of compact multiband operational antenna system using electromagnetic band gap (EBG) periodic structures. The proposed design is analyzed for covering WLAN and C band applications with resonating frequencies of 3.32, 4.81 and 6.9 GHz respectively. The antenna designed shows a good approximation to achieve a better return loss and other antenna parameters like bandwidth, gain, directivity and efficiency. The compact antenna suggested is grounded on a substrate material of FR4 epoxy having relative permittivity of 4.4 & dielectric loss tangent of 0.02 maintained with a height of 1.6mm. When periodic EBG structures are placed on either side of the feed line provide enhance in the antenna parameters by suppressing surface waves. The optimal position of EBG structures are analyzed using parametric analysis, which is placed at a distance (g) of 1.45mm on both sides from the feed line. It is observed that, there is an improvement in return loss of 9 dB when compared to the antenna structure of without EBG structure. The entire antenna design performance is analyzed using high frequency structure simulator (HFSS) tool.

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SalarRahimi, Marzieh, J. Rashed-Mohassel, and M. Edalatipour. "Radiation Properties Enhancement of a GSM/WLAN Microstrip Antenna Using a Dual Band Circularly Symmetric EBG Substrate." IEEE Transactions on Antennas and Propagation 60, no. 11 (2012): 5491–94. http://dx.doi.org/10.1109/tap.2012.2208442.

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Chen, Shibin, Xuan Zhao, Yunshi Yao, Jingcun Ma, and Shuangjian Yang. "Study on radiation performances of dipole antenna with diamond-structure EBG substrate fabricated by 3D printing technique." International Journal of Applied Ceramic Technology 15, no. 5 (2018): 1095–99. http://dx.doi.org/10.1111/ijac.12872.

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Hernández-Serrano, ría del Carmen, Alin Denis Carbajal-Gasca, and Luis Alejandro Iturri-Hinojosa. "A compact antenna design for UWB MIMO applications." Journal de Ciencia e Ingeniería 14, no. 1 (2022): 39–49. http://dx.doi.org/10.46571/jci.2022.1.5.

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A compact UWB-MIMO antenna design with an impedance bandwith from 3.2 GHz to 9.1 GHz is presented. The MIMO antenna has a transmission coefficient response less than -14 dB at the resonance frequency bandwidth. To improve the isolation and the antenna performance, an Electromagnetic Band Gap (EBG) structure is introduced between elements, that consists of an added microstrip at ground plane, a 9x1 periodic metal-square patches on top of the substrate, and vertical vias connecting the patches to the ground plane. The EBG structure design methodology is presented. The isolation enhancement between elements is 4 dB at frequency bandwidth. The compact UWB-MIMO antenna with EBG structure reaches a maximum isolation of -33 dB at 6.42 GHz. The peak gain is 4.8 dBi at 7.3 GHz in the H-plane radiation, and 3.3 dBi at 7.3 GHz in the E-plane radiation.

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Wajid, Abdul, Ashfaq Ahmad, Sadiq Ullah, Dong-you Choi, and Faiz Ul Islam. "Performance Analysis of Wearable Dual-Band Patch Antenna Based on EBG and SRR Surfaces." Sensors 22, no. 14 (2022): 5208. http://dx.doi.org/10.3390/s22145208.

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This paper presents the performance comparison of a dual-band conventional antenna with a split-ring resonator (SRR)- and electromagnetic bandgap (EBG)-based dual-band design operating at 2.4 GHz and 5.4 GHz. The compactness and dual-frequency operation in the legacy Wi-Fi range of this design make it highly favorable for wearable sensor network-based Internet of Things (IoT) applications. Considering the current need for wearable antennas, wash cotton (with a relative permittivity of 1.51) is used as a substrate material for both conventional and metamaterial-based antennas. The radiation characteristics of the conventional antenna are compared with the EBG and SRR ground planes-based antennas in terms of return loss, gain, and efficiency. It is found that the SRR-based antenna is more efficient in terms of gain and surface wave suppression as well as more compact in comparison with its two counterparts. The compared results are found to be based on two distinct frequency ranges, namely, 2.4 GHz and 5.4 GHz. The suggested SRR-based antenna exhibits improved performance at 5.4 GHz, with gains of 7.39 dbi, bandwidths of 374 MHz, total efficiencies of 64.7%, and HPBWs of 43.2 degrees. The measurements made in bent condition are 6.22 db, 313 MHz, 52.45%, and 22.3 degrees, respectively. The three considered antennas (conventional, EBG-based, and SRR-based) are designed with a compact size to be well-suited for biomedical sensors, and specific absorption rate (SAR) analysis is performed to ensure user safety. In addition, the performance of the proposed antenna under bending conditions is also considered to present a realistic approach for a practical antenna design.

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Wu, Wenjing, Bo Yuan, and Aiting Wu. "A Quad-Element UWB-MIMO Antenna with Band-Notch and Reduced Mutual Coupling Based on EBG Structures." International Journal of Antennas and Propagation 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/8490740.

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A compact planar quad-element ultrawideband (UWB) antenna with a band-notch and low coupling for multiple-input multiple-output (MIMO) system is proposed in this paper. The antenna consists of four circular monopoles with modified defected ground plane and a periodic electromagnetic band gap (EBG) structures. The proposed EBG structures are modified from the traditional mushroom-like ones, comprised of patterns of grids on the top patch, the metallic ground plane, and several vias that connect the top and bottom plane. It is printed at the center of the dielectric substrate to lower electromagnetic coupling between the parallel elements. Besides, by etching four crescent ring-shaped resonant slots on the radiators, a sharp band-notched characteristic is achieved. From the experimental results, the −10 dB bandwidth of the antenna is extended covers from 3.0 to 16.2 GHz, with a sharp notched band at 4.6 GHz. And the isolation is greater than 17.5 dB between its elements, with a peak gain of 8.4 dB and a peak efficiency of 91.2%. Moreover, it has a compact size of 0.6λ×0.6λ×0.016λ at 3 GHz and could be a good candidate for portable devices.

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Rajo-Iglesias, Eva, Óscar Quevedo-Teruel, and Luis Inclan-Sanchez. "Mutual Coupling Reduction in Patch Antenna Arrays by Using a Planar EBG Structure and a Multilayer Dielectric Substrate." IEEE Transactions on Antennas and Propagation 56, no. 6 (2008): 1648–55. http://dx.doi.org/10.1109/tap.2008.923306.

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Yu, Weihua, Abbas Vosoogh, Bowu Wang, and Zhongxia Simon He. "Substrateless Packaging for a D-Band MMIC Based on a Waveguide with a Glide-Symmetric EBG Hole Configuration." Sensors 22, no. 17 (2022): 6696. http://dx.doi.org/10.3390/s22176696.

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This paper presents a novel substrateless packaging solution for the D-band active e mixer MMIC module, using a waveguide line with a glide-symmetric periodic electromagnetic bandgap (EBG) hole configuration. The proposed packaging concept has the benefit of being able to control signal propagation behavior by using a cost-effective EBG hole configuration for millimeter-wave- and terahertz (THz)-frequency-band applications. Moreover, the mixer MMIC is connected to the proposed hollow rectangular waveguide line via a novel wire-bond wideband transition without using any intermediate substrate. A simple periodical nail structure is utilized to suppress the unwanted modes in the transition. Additionally, the presented solution does not impose any limitations on the chip’s dimensions or shape. The packaged mixer module shows a return loss lower than 10 dB for LO (70–85 GHz) and RF (150–170 GHz) ports, achieving a better performance than that of traditional waveguide transitions. The module could be used as a transmitter or receiver, and the conversion loss shows good agreement in multiple samples. The proposed packaging solution has the advantages of satisfactory frequency performance, broadband adaptability, low production costs, and excellent repeatability for millimeter-wave- and THz-band systems, which would facilitate the commercialization of millimeter-wave and THz products.

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Li, Yading, Karu P. Esselle, and Lvqian Zhang. "A Coupled-Field Expansion Method for Single-Layer and Multilayer Planar Periodic Structures." International Journal of Antennas and Propagation 2012 (2012): 1–16. http://dx.doi.org/10.1155/2012/170963.

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A new, rigorous, field-based, seminumerical analysis method is presented to obtain the reflection and transmission coefficients of 2D planar periodic structures with arbitrarily shaped metallization patterns for both normal and oblique incidence conditions. It is useful for the analysis, design, and optimization of many single-layer and multilayer planar structures, such as frequency-selective surfaces (FSSs), artificial magnetic conductor (AMC) surfaces, electromagnetic bandgap (EBG) structures, some metamaterials and high-impedance surfaces. In this coupled-field expansion method (CFEM), thex- andy-components of the vector magnetic potential in each homogeneous region in a unit cell are expanded in terms of Bloch-Floquet modes and the solution to the coupled-field problem is formulated. The unique, analytical formulation presented here leads to a linear system with reasonably simple matrix elements. By cascading the matrices representing each interface, multilayer periodic structures are analyzed in a very flexible way. Being field based, CFEM does not require substrate Green's functions to analyze surfaces printed on dielectric substrates. The method was validated by analyzing one single-layer periodic surface (a printed AMC on a dielectric substrate) and one multilayer periodic surface (a circular polarizer) and comparing CFEM results with HFSS results.

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Journal articles on the topic 'EBG Substrate'

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