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Artículos de revistas sobre el tema "Omnidirectional circular polarization (OCP)"

Autor: Grafiati
Publicado: 8 de febrero de 2025
Última modificación: 31 de julio de 2025

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1

Yufeng Yu, Zhongxiang Shen, and Sailing He. "Compact Omnidirectional Antenna of Circular Polarization." IEEE Antennas and Wireless Propagation Letters 11 (2012): 1466–69. http://dx.doi.org/10.1109/lawp.2012.2231392.

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2

Wei, Kun, Jian-Ying Li, Ling Wang, and Zijian Xing. "A NEW OMNIDIRECTIONAL CIRCULAR POLARIZATION MICROSTIP ANTENNA." Progress In Electromagnetics Research Letters 53 (2015): 45–50. http://dx.doi.org/10.2528/pierl15030902.

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3

Wu, Junyan, Jiaao Yu, and Qin Tao. "Design of a Missile-borne Conformal Microstrip Navigation Antenna." MATEC Web of Conferences 232 (2018): 04080. http://dx.doi.org/10.1051/matecconf/201823204080.

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A missile-borne conformal dual-fed circular polarized microstrip antenna array is designed and fabricated, which realized omnidirectional radiation in horizontal direction. Frequencies of the antenna include GPS L1 frequency (1.575GHz) and Beidou navigation system B1 frequency (1.562GHz). Based on the HFSS simulation, the influence of conformation is analyzed on S11, axial ratio and gain of antenna array. The size of microstrip patches is changed so that the influence of conformation on antenna can be reduced. The circular polarization performance and the circular polarization gain of the ante
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4

Zhang, Ke, Xiangjun Li, Lei Chen, Zengjun Liu, and Yuchen Xie. "Impact Analysis of Orthogonal Circular-Polarized Interference on GNSS Spatial Anti-Jamming Array." Remote Sensing 16, no. 23 (2024): 4506. https://doi.org/10.3390/rs16234506.

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With the continuous advancement of electromagnetic countermeasures, new types of interference signals (e.g., multi-polarization suppression interference) pose a significant threat to conventional Global Navigation Satellite System (GNSS) services, even when the receiver employs a right-handed circularly polarized (RHCP) anti-jamming array. This paper proposes a receiving signal model for orthogonal circularly polarized (OCP) interference signals based on conventional arrays, following an analysis of the non-ideal characteristics of actual arrays. Furthermore, the mechanism by which OCP interfe
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5

Su, Changjiang, Yanqun Liu, Leilei Liu, Mei Yang, Hongxin Zhao, and Xiaoxing Yin. "Experimental Evaluation of Multipath Mitigation in TDOA-Based Indoor Passive Localization System Using A Beam Steering Broadband Circular Polarization Antenna." Electronics 7, no. 12 (2018): 362. http://dx.doi.org/10.3390/electronics7120362.

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An experimental evaluation of multipath mitigation using a beam steering broadband circular polarization antenna (BSBCPA) in indoor passive localization system based on time differences of arrival (TDOA) is presented in this paper. The BSBCPA consists of a beam switch network, four identical hexagon patch elements and their respective feeding networks. By controlling the states of a radio frequency (RF) switch in the beam switch network, four steering circular polarization beams can be excited separately for azimuth omnidirectional coverage. Combining the spatial selectivity of steering beams
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6

Wei, Qian, Jiaju Wu, Zhiwei Guo, et al. "Photonic Bandgaps of One-Dimensional Photonic Crystals Containing Anisotropic Chiral Metamaterials." Photonics 9, no. 6 (2022): 411. http://dx.doi.org/10.3390/photonics9060411.

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Conventional photonic bandgaps (PBGs) for linear polarization waves strongly depend on the incident angle. Usually, PBGs will shift toward short wavelengths (i.e., blue-shifted gaps) as the incident angle increases, which limits their applications. In some practices, the manipulation of PBGs for circular polarization waves is also important. Here, the manipulation of PBGs for circular polarization waves is theoretically investigated. We propose one-dimensional photonic crystals (1DPCs) containing anisotropic chiral metamaterials which exhibit hyperbolic dispersion for left circular polarizatio
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7

Mulimbayan, Francis, and Manolo G. Mena. "Comparative Study of the Corrosion Behavior of Low-Nickel AISI 202 and Conventional AISI 304 Stainless Steels in Citric Acid Using Electrochemical Techniques." Applied Mechanics and Materials 835 (May 2016): 131–35. http://dx.doi.org/10.4028/www.scientific.net/amm.835.131.

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Stainless steel (SS) is one of the most commonly used metallic food contact materials. It may be classified based on its microstructure whether ferritic, austenitic, martensitic, duplex or precipitation hardened. Austenitic SS, among mentioned grades, has the largest contribution to market due to its numerous industrial and domestic applications. In this study, the corrosion behavior of AISI 202 SS – a cheaper grade of stainless steel, in three different solution temperatures of citric acid was investigated using different electrochemical techniques such as open-circuit potential (OCP) measure
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8

Pradeep, Pendli, Satyanarayana S K, and Mahesh M. "DESIGN AND ANALYSIS OF A CIRCULARLY POLARIZED OMNIDIRECTIONAL SLOTTED PATCH ANTENNA AT 2.4 GHZ." ICTACT Journal on Communication Technology 11, no. 3 (2020): 2234–38. https://doi.org/10.21917/ijct.2020.0330.

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In this paper, a circularly polarized omnidirectional slotted antenna is presented for ISM applications. The proposed antenna made with a feedline in the ground plane, an annular elliptical slot and four rectangular slots etched on radiating patch and semicircular patch slots are used to achieve circular polarization. The ground plane feed line impedance value is 50 ohms. The substrate used here is FR4 and its relative permittivity 4.4 and loss tangent 0.02. Antenna dimensions are 58mm×58mm×1.6mm. The antenna is resonating at 2.45 GHz with return loss of -31.12dB. The impedance bandwidth cover
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9

Zhou, Yun, Shaojun Fang, Hongmei Liu, Zhongbao Wang, and Te Shao. "A Function Reconfigurable Antenna Based on Liquid Metal." Electronics 9, no. 5 (2020): 873. http://dx.doi.org/10.3390/electronics9050873.

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To meet the demands of maritime transportation on ships, including satellite positioning, wireless communication, and radio frequency identification (RFID) for cargo handling management, a function reconfigurable antenna based on liquid metal is proposed in this paper. The antenna is composed of 3-D-printed hollow cavities, a two-step impedance feeding sheet, and two feeding probes. The 3-D-printed hollow cavities contain a big hollow helix cavity, a hollow cone loaded cylinder cavity, four hollow cylinder cavities, and four small hollow helix cavities. By filling the liquid metal into differe
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10

Keshari, Jaishanker Prasad, Binod Kumar Kanaujia, Mukesh Kumar Khandelwal, Pritam Singh Bakariya, and Ram Mohan Mehra. "Omnidirectional multi-band stacked microstrip patch antenna with wide impedance bandwidth and suppressed cross-polarization." International Journal of Microwave and Wireless Technologies 9, no. 3 (2016): 629–38. http://dx.doi.org/10.1017/s1759078716000209.

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In this paper, triple-band stacked microstrip patch antennas (MPAs) are presented with wide impedance bandwidth and suppressed cross-polarization level. Triangular and circular shaped slots are embedded in the patch of antenna. Slot-loaded microstrip patches are fed with meandered microstrip line supported by a semi-ground plane structure. Triangular shaped slot-loaded MPA shows triple resonance at frequencies 2.2, 4.45, and 5.3 GHz having bandwidth of 45.9, 19.23, and 15.67%, respectively. Circular shaped slot-loaded MPA also shows triple resonance at frequencies 2.2, 4.42, and 5.38 GHz havin
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11

Dangkham, Piyapong, Sitthichai Dentri, Chuwong Phongcharoenpanich, and Prayoot Akkaraekthalin. "Circularly Polarized Omnidirectional Antenna with Dipole Core and Diagonally Adjoined Parasitic Braces for ISM Band Applications." International Journal of Antennas and Propagation 2019 (August 21, 2019): 1–11. http://dx.doi.org/10.1155/2019/2463871.

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This research proposes a circularly polarized (CP) single-fed omnidirectional dipole antenna operable in 2.45 GHz frequency for the industrial, scientific, and medical (ISM) radio band applications. The proposed antenna consisted of bisectional dipole core, a pair of quarter-wave baluns, and four diagonally adjoined parasitic braces. The bisectional dipole core was utilized to improve the antenna gain and realize omnidirectional radiation pattern, and the quarter-wave baluns were to symmetrize the current on the bisectional core. The four parasitic braces collectively generated circular polari
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12

Li, Weiwei, Kwok Wa Leung, and Nan Yang. "Omnidirectional Dielectric Resonator Antenna With a Planar Feed for Circular Polarization Diversity Design." IEEE Transactions on Antennas and Propagation 66, no. 3 (2018): 1189–97. http://dx.doi.org/10.1109/tap.2018.2794323.

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13

Abu, Hena Murshed, Azad Hossain Md., Asad Rahman Muhammad, Nishiyama Eisuke, and Toyoda Ichihiko. "Design and characterization of polarization reconfigurable heart shape monopole antenna for 2.4 GHz application." International Journal of Electrical and Computer Engineering (IJECE) 12, no. 4 (2022): 3808–19. https://doi.org/10.11591/ijece.v12i4.pp3808-3819.

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This article represented a heart shape reconfigurable monopole antenna with polarization diversity. The proposed antenna is fed by a 50 Ω microstrip feed line that is printed on a flexible FR-4 (εr=4.4) substrate. The antenna comprises a ring-slot, a cross slot and four positive-intrinsic-negative (PIN) diodes that are soldered on ring slot. Four PIN diodes act as a switch and by controlling these PIN diodes effective current direction is changed hence four various states of polarization are achieved. Four states of polarization such as horizontal linear polarization (H-LP), vert
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14

Sharma, Manish. "Design of multiband circularly/linearly polarized antenna for multiple wireless (WWAN/Bluetooth/WiMAX/WLAN/Downlink Satellite System)." International Journal of Microwave and Wireless Technologies 11, no. 9 (2019): 967–74. http://dx.doi.org/10.1017/s1759078719000692.

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AbstractIn this article, a multiband antenna for various wireless communications is proposed for WWAN, Bluetooth, WiMAX, WLAN, and Downlink satellite system. The antenna consists of a radiating patch and a rectangular ground plane with four L-shaped stubs which are embedded as side arms to obtain a resonating band for WWAN (1.9GHz), Bluetooth (2.4 GHz), WiMAX (2.5, 3.5, and 5.5 GHz), and WLAN (5.5 GHz) wireless systems and a C-shaped stub is etched on the radiating patch to obtain a higher WLAN band (2.4, 5.2, and 5.8 GHz) and a satellite downlink system (7.5 GHz). The proposed antenna exhibit
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15

Yang, Jiawei, Xi Li, and Lin Yang. "A Novel Design of CPW Feed Planar Omnidirectional Circularly Polarized Antenna." International Journal of Antennas and Propagation 2021 (March 27, 2021): 1–7. http://dx.doi.org/10.1155/2021/6695966.

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A novel planar omnidirectional circularly polarized (CP) antenna is presented. The omnidirectional circular polarization characteristics of the planar antenna are the result of the combined effect of a planar quasi-magnetic dipole (PQMD) and a printed electric dipole (PED) in this paper. The CP radiation pattern of the proposed antenna can be achieved by distributing appropriate current amplitude and phase to both elements, respectively. A power divider is used to adjust the amplitude and phase relationship between two basic components. In order to achieve a planar structure, coplanar waveguid
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16

Cheng, Jia, Tianyu Gao, Dongpeng Han, and Changfei Zhou. "Dual-Band Shared-Aperture Antenna with Pattern and Polarization Diversity." Applied Sciences 15, no. 2 (2025): 878. https://doi.org/10.3390/app15020878.

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This paper proposes a dual-band co-aperture antenna, which covers 2.09–11.61 GHz (9.52 GHz, 138.9%) and 21.6–29.6 GHz (8 GHz, 31%). The overall size of the proposed antenna is 0.76 × 0.76 × 0.37 λ03, where λ0 is the free space wavelength of the lowest operating frequency of 2.09 GHz. By removing the internal metal of the monopole antenna and adding a Vivaldi antenna at the bottom of the bowl monopole antenna, dual-band radiation characteristics can be achieved. A medium polarization converter is used to achieve circular polarization and improve the broadside gain in the high-frequency band. Th
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17

Bou-El-Harmel, Abdelhamid, Ali Benbassou, Jamal Belkadid, and Nadia Mechatte. "Effect of Quasi-Isotropic Antenna Orientation on Indoor Multipath Propagation Characteristics in RSN Applications." International Journal of Antennas and Propagation 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/2686123.

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In the RFID sensor networks (RSN), the orientations of the antennas used in the network nodes have a significant influence on the propagation characteristics. In this article, we investigated the effects of the two antennas’ orientation of different radiation and polarization on the multipath propagation characteristics. This study is evaluated in a typical indoor environment by computer simulations based on the three-dimensional (3D) ray-tracing method. This method is based on geometric optics and uniform diffraction theory and also it offers significant advantages in terms of accurate and co
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18

Voitovich, V. V., Yu V. Petrash, M. M. Belousov, E. M. Yungaitis, A. V. Ershov, and N. I. Voitovich. "DIPOLE ANTENNA WITH CIRCULAR RADIATION PATTERN IN THE E-PLANE FOR VALIDATION THE INTEGRITY OF THE AIRCRAFT LANDING SYSTEMS INFORMATION." Journal of the Ural Federal District. Information security 20, no. 4 (2020): 31–43. http://dx.doi.org/10.14529/secur200403.

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The paper presents the results of studies of an omnidirectional dipole antenna designed for installation on an unmanned aerial vehicle of the mini-UAV category. The antenna forms a cir-cular radiation pattern in the horizontal plane with horizontal polarization of the radiated field. Irregularity of the radiation pattern of the antenna under study in free space in the horizontal plane is ±0.2 dB. The antenna contains a minimum number of elements of the feeder path. It has convenient for practical implementation design
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19

Kim, Dang-Oh, Che-Young Kim, and Dae-Geun Yang. "Flexible Hilbert-Curve Loop Antenna Having a Triple-Band and Omnidirectional Pattern for WLAN/WiMAX Applications." International Journal of Antennas and Propagation 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/687256.

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A triple-band flexible loop antenna is proposed for WLAN/WiMAX applications in this paper. The proposed antenna is formed by the third-order Hilbert-curve and bending type structure which provides flexible characteristics. Even though the radius of the curvature for bending antennas is changed, a triple-band feature still remains in the proposed antenna. Moreover, the antenna exhibits the characteristics of omnidirectional radiation pattern and circular polarization. To verify the receiving performance of antenna, a simulation on the antenna factor was conducted by an EM simulator. Based on th
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20

Piyas, Chowdhury, Chakma Nishako, Hena Murshed Abu, Azad Hossain Md., and Delwar Hossain Quazi. "An improved 2×2 array antenna using both-sided microwave integrated circuit technology for circular polarization." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 1 (2023): 619–28. https://doi.org/10.11591/ijece.v13i1.pp619-628.

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A circularly polarized microstrip patch array antenna using both-sided microwave integrated circuit (MIC) technology with a triple feed network has been proposed in this article. The antenna elements, feed structure and both-sided MIC technology are used and arranged in such a way to obtain circular polarization alongside high gain without using an external matching circuit. The 50 Ω microstrip line is used to energize the antenna where the antenna’s total feed network is made up of both series and parallel combinations of microstrip and slot line. The antenna was realized using Te
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21

Hatami, Ahmad, and Mohammad Naser‐Moghadasi. "Split ring resonator metamaterial loads for compact Hepta band printed inverted F antenna with circular polarization." Microwave and Optical Technology Letters 60, no. 10 (2018): 2552–59. http://dx.doi.org/10.1002/mop.31367.

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AbstractThe printed inverted F antenna (PIFA) has been developed in various shapes for the wireless application. In this paper, we have developed a novel shape based on loop antenna where it is in interaction with the split ring resonator (SRR) load and the extended ground by two vias for multi‐band antenna to cover, GSM900, GSM1800, UMTS, GSM1900, WCDMA 100, 802.11b/g, LTE2600, and 802.11a/n. The antenna total dimensions are 100 mm × 60 mm and it is fabricated on a low‐cost FR‐4 substrate. The prototype antenna has omnidirectional pattern and VSWR is lower than 3 for wireless requested freque
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22

Dangol, Sunil, Susan Hyongoju, Bindeshwor Kumar Sah, Sarbagya Buddhacharya, and Sirash Sayanju. "Design and Testing of VHF Eggbeater Antenna." Journal of Science and Technology 4, no. 2 (2024): 100–104. https://doi.org/10.3126/jost.v4i2.78970.

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In the field of satellite communication, the design and performance of VHF eggbeater antennas play a pivotal role in establishing reliable links with low Earth orbit (LEO) satellites. This paper presents a detailed study on the design, testing, and verification of a VHF eggbeater antenna optimized for 145.8 MHz; a frequency commonly used for satellite communication. The design methodology involves precise calculations of antenna dimensions, simulation for performance optimization, and practical implementation using a NanoVNA for characterization. Experimental results include SWR curves, impeda
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23

Chowdhury, Piyas, Nishako Chakma, Abu Hena Murshed, Md Azad Hossain, and Quazi Delwar Hssain. "An improved 2×2 array antenna using both-sided microwave integrated circuit technology for circular polarization." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 1 (2023): 619. http://dx.doi.org/10.11591/ijece.v13i1.pp619-628.

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<span lang="EN-US">A circularly polarized microstrip patch array antenna using both-sided microwave integrated circuit (MIC) technology with a triple feed network has been proposed in this article. The antenna elements, feed structure and both-sided <a name="_Hlk112828933"></a>MIC technology are used and arranged in such a way to obtain circular polarization alongside high gain without using an external matching circuit. The 50 Ω microstrip line is used to energize the antenna where the antenna’s total feed network is made up of both series and parallel combinations of micros
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24

Uwano, Shuta, Atsuya Ando, Tomohiro Seki, Yasushi Takatori, and Takefumi Hiraguri. "Experimental Investigations of Cochannel Interference Reduction Effect at High Elevation Base Station Using Beam Tilt and Orthogonal Polarization." International Journal of Antennas and Propagation 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/532743.

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This paper addresses the problem of cochannel interference (CCI) generated in a mixed cell architecture in microcellular systems. In this type of microcellular systems in which both microcells and macrocells coexist in the same geographical urban area, the base station antennas mounted on the rooftops of buildings to cover wide circular radio zones suffer severe CCI from the surrounding low base stations. A dielectric-loaded slotted-cylinder antenna (DSCA) is applied to horizontally polarized omnidirectional array antennas in a height-diversity configuration with the high gain of 8 dBi, which
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25

Ouberri, Fatima, Abdelali Tajmouati, Jamal Zbitou, and Mohamed Latrach. "A new design of a printed reconfigurable coplanar multiband antenna." Indonesian Journal of Electrical Engineering and Computer Science 28, no. 1 (2022): 234. http://dx.doi.org/10.11591/ijeecs.v28.i1.pp234-240.

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The demand for multi-functional components has increased enormously in recent years. Advances in integrated technology have enabled researchers to adapt diverse applications operating at different frequencies in a single wireless device. A compact broadband coplanar waveguide (CPW)-fed square aperture monopole antenna with inverted-L grounded strips is first described. The proposed antenna has a small size of 60×60×0.74 mm3 and has excellent performances which include a good input impedance matching with a much wider operating bandwidth, an excitation of the circular polarization at 2.45 GHz,
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26

Wei, Zhang, and Yang Junfeng. "A Design of Vertical Polarized Conformal Antenna and Its Array Based on UAV Structure." International Journal of Antennas and Propagation 2017 (2017): 1–12. http://dx.doi.org/10.1155/2017/9769815.

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The designs of conformal antenna and its array usually need to combine with different carrier structures. As for cone or cylindrical carrier, through using of invasive weed optimization (IWO), the conformal array should be the optimized design as the antenna installation space requirements of cylindrical carrier; through adopting the antenna unit miniaturization method, it designs out a conformal antenna and makes it easier to be installed and the omnidirectional circular polarized beam is also realized. As for unmanned aircraft carrier, it designs out the low profile of conformal vertical pol
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27

Rao, Dr K. Babu. "Enhanced Circularly Polarized Antenna for Body Centric Communication." International Journal for Research in Applied Science and Engineering Technology 12, no. 4 (2024): 3030–41. http://dx.doi.org/10.22214/ijraset.2024.60580.

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Abstract: This study introduces a miniaturized circularly polarized ultra-wideband (UWB) antenna designed specifically for body-centric communication applications, with a focus on its performance across different frequencies. Fabricated on jean fabric, the antenna offers exceptional flexibility and seamless integration into clothing, making it ideal for wearable devices. The design achieves circular polarization through the utilization of an asymmetric stepped L-shaped ground plane and a crossshaped stub integrated into the radiator structure.Operating across the UWB frequency spectrum ranging
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28

Fatima, Ouberri1, Tajmouati1 Abdelali, Zbitou2 Jamal, and Latrach3 Mohamed. "A new design of a printed reconfigurable coplanar multiband antenna." Indonesian Journal of Electrical Engineering and Computer Science 28, no. 1 (2022): 234–40. https://doi.org/10.11591/ijeecs.v28.i1.pp234-240.

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The demand for multi-functional components has increased enormously in recent years. Advances in integrated technology have enabled researchers to adapt diverse applications operating at different frequencies in a single wireless device. A compact broadband coplanar waveguide (CPW)-fed square aperture monopole antenna with inverted-L grounded strips is first described. The proposed antenna has a small size of 60×60×0.74 mm3 and has excellent performances which include a good input impedance matching with a much wider operating bandwidth, an excitation of the circular polarization a
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29

Afiza, Nur Jaafar, Ja'afar Hajar, Yamada Yoshihide, Sadeghikia Fatemeh, Pasya Ibrahim Idnin, and Khairil Adzhar Mahmood Mohd. "Design of an axial mode helical antenna with buffer layer for underwater applications." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 1 (2023): 473–82. https://doi.org/10.11591/ijece.v13i1.pp473-482.

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Recently, there is an increasing demand for high-speed wireless communication network for short-range underwater communication. From previous research, most underwater antennas produced omnidirectional radiation pattern which has lower antenna gain. There are a few considerations that need to be taken if the antenna is designed to operate in water environment. This paper discusses the electromagnetic properties which affect the underwater antenna design. Physical properties such as electrical permittivity and conductivity of water contribute significant effect to the size of the antenna as it
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30

Jaafar, Afiza Nur, Hajar Ja’afar, Yoshihide Yamada, Fatemeh Sadeghikia, Idnin Pasya Ibrahim, and Mohd Khairil Adzhar Mahmood. "Design of an axial mode helical antenna with buffer layer for underwater applications." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 1 (2023): 473. http://dx.doi.org/10.11591/ijece.v13i1.pp473-482.

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<span lang="EN-US">Recently, there is an increasing demand for high-speed wireless communication network for short-range underwater communication. From previous research, most underwater antennas produced omnidirectional radiation pattern which has lower antenna gain. There are a few considerations that need to be taken if the antenna is designed to operate in water environment. This paper discusses the electromagnetic properties which affect the underwater antenna design. Physical properties such as electrical permittivity and conductivity of water contribute significant effect to the s
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31

Kamal, Shahanawaz, Mohd Fadzil Bin Ain, Ubaid Ullah, et al. "A Low-Profile Quasi-Loop Magneto-Electric Dipole Antenna Featuring a Wide Bandwidth and Circular Polarization for 5G mmWave Device-to-Device Communication." Journal of Electromagnetic Engineering and Science 22, no. 4 (2022): 459–71. http://dx.doi.org/10.26866/jees.2022.4.r.110.

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The deployment of the millimeter (mmWave) frequency spectrum by fifth-generation (5G) device-to-device (D2D) wireless networks is anticipated to meet the growing demands for increased capacity. The antenna is regarded of as an important determinant that guarantees the maximum performance of wireless communication. This paper presents a low-profile magneto-electric (ME) dipole antenna for 5G mmWave D2D communication. A single-element quasi-loop radiator was designed to excite horizontal polarization, and a coaxial probe was used to produce vertical polarization. Subsequently, the structure of t
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32

Shivangi, Soni, Chandan, Kumar Singh Ashutosh, and Yadav Hema. "A compact microstrip patch antenna with DGS for WiFi/WiMAX/WLAN." i-manager's Journal on Communication Engineering and Systems 12, no. 1 (2023): 1. http://dx.doi.org/10.26634/jcs.12.1.19756.

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In recent years, the study of microstrip patch antennas has witnessed significant advancements, offering numerous advantages and promising prospects compared with conventional antennas. These antennas are characterized by their lightweight compact size, low cost, low profile, small dimensions, and excellent conformability. Additionally, microstrip patch antennas exhibit various desirable features, such as dual and circular polarization, dual-frequency operation, broad bandwidth, flexible feedline configurations, and beam-scanning omnidirectional patterns. In this paper, a microstrip patch ante
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33

Wu, Chen, and Janaka Elangage. "Numerical Study of Extremely Wideband-Modified Biconical Radiation Structures for Electronic Support Measures Application." Electronics 10, no. 4 (2021): 369. http://dx.doi.org/10.3390/electronics10040369.

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Using the finite difference time domain (FD-TD) method, this paper studies radiation structures that can have multiple tunable frequency bands between 0.4 GHz and 4 GHz, a fixed band in [3.97, 5.36] GHz and an extremely wideband from 6.14 GHz to 68.27 GHz, where a frequency band is defined by the voltage standing wave ratio (VSWR) less than or equal to two. The base radiation structure has a modified-biconical antenna configuration, called base MBA, and is fed by a square-coaxial line with characteristic impedance close to 50 ohms. A dielectric ring and an outer dielectric cover are used betwe
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34

Gao, Guo‐Ping, Dan Wang, Ge Ma, Shi‐Chen Wang, Zhi‐Heng Dou, and Bin Hu. "A dual‐band dual‐polarized omnidirectional patch antenna for on‐body application." Microwave and Optical Technology Letters 66, no. 3 (2024). http://dx.doi.org/10.1002/mop.34050.

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AbstractAiming at the 3.5 GHz world interoperability for microwave access band and 5.8 GHz industrial scientific medical band, a dual‐band antenna operating in omnidirectional mode is proposed. The antenna uses a single‐layer dielectric substrate made of FR‐4, which is cheap and easy to process. It uses circular patches and metal branches to generate orthogonal electric fields to achieve circular polarization. At the same time, the upper patch is symmetrically slotted in a T shape, so that the patch produces two resonance frequencies. The measured impedance bandwidth of the antenna in circular
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35

Cho, SeongYong, Misaki Takahashi, Jun-ichi Fukuda, Hiroyuki Yoshida, and Masanori Ozaki. "Directed self-assembly of soft 3D photonic crystals for holograms with omnidirectional circular-polarization selectivity." Communications Materials 2, no. 1 (2021). http://dx.doi.org/10.1038/s43246-021-00146-x.

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AbstractControlling the crystallographic orientation of 3D photonic crystals is important as it determines the behavior of light propagating through the device. Blue phases self-assemble into unique soft 3D photonic crystals with chiral structures for circular-polarization selectivity, but it has remained a challenge to control its 3D orientation. Here, we show that the orientation of blue phases can be precisely controlled to follow a predefined pattern imprinted on a substrate by exploiting field-induced phase transitions. Obtaining the blue phase through the field-induced chiral nematic pha
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36

Liang, JiaJun, Zhao Wu, Long Li, Xiuyin Zhang, and Hua Yang. "Low‐profile multi‐polarization and pattern reconfigurable antenna based on metasurface." Electronics Letters 59, no. 16 (2023). http://dx.doi.org/10.1049/ell2.12919.

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AbstractIn this letter, a low‐profile metasurface (MS) antenna with multi‐polarization and pattern reconfigurability is presented. The antenna mainly consists of two parts, including a loop antenna fed by balun, and a MS antenna excited by the coupled aperture. When switching the PIN diode and rotating the MS, the multi‐polarization and pattern reconfigurable ability of the antenna is obtained. While the loop antenna is excited, a horizontally linear polarized (HLP) wave and omnidirectional pattern are obtained. Besides, when the MS is operated, due to the differential phase between the orthog
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37

Emadian, Seyed Ramin, and Changiz Ghobadi. "Investigation on a compact wideband omnidirectional circularly polarized antenna in an indoor propagation channel for 2.4 GHz application." International Journal of Communication Systems, January 17, 2024. http://dx.doi.org/10.1002/dac.5706.

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SummaryIn this paper, for the first time, the capability of a compact low‐cost wideband omnidirectional circularly polarized (CP) antenna to suppress multipath fading characteristics in a typical indoor propagation channel for 2.4 GHz applications is investigated. A ray tracing method based on the geometrical optics and uniform theory of diffraction is applied to analyze an indoor propagation channel using the measured radiation patterns of the proposed antenna. The design uses a conventional monopole antenna with a circular ground plane to generate a vertically polarized electric field. Seque
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38

Dudarev, S. V., and D. S. Klygach. "Experimental and numerical simulation of a dual-band omnidirectional printed antenna." Antennas 3 (July 7, 2023). http://dx.doi.org/10.18127/j03209601-202303-03.

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Currently, there are many radio engineering and telecommunication systems, the exchange of information in which is carried out using radio signals. For each system, it is necessary to develop new antennas operating in a certain frequency range. Therefore, an urgent problem is development of radiating devices capable of operating simultaneously in two or more wide frequency ranges. This will allow the antenna to be used for multiple applications. The aim of the article is to develop and implement a small-sized printed antenna with a circular pattern in the azimuthal plane and horizontal polariz
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39

Zhu, Yuanqing, Xiaoming Liu, Shuo Yu, Aiqing Zhang, Youhong Feng, and Xiaojun Jing. "An Omnidirectional Low‐Profile Dual‐Polarized UWB Antenna for Dual‐Functional Applications in Internet of Vehicles." Radio Science 60, no. 6 (2025). https://doi.org/10.1029/2025rs008263.

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AbstractIn this paper, a snowflake‐shaped low‐profile ultra‐wideband (UWB) antenna is reported for dual function multiplexing of the Passive Keyless Entry and Start (PKES) system and the Automated Valet Parking (AVP) system. This antenna demonstrates preferred properties of omnidirectional radiation patterns and dual polarization. Both horizontally polarized (HP) and vertically polarized (VP) elements cover the UWB band, ensuing reliable signal receiving/transmitting. The omnidirectional radiation patterns are obtained over the whole working frequency band, which is much preferred in uses of P
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40

Noghanian, Sima. "Textile omnidirectional antenna for wearable WiFi-7 applications using higher order modes." Frontiers in Antennas and Propagation 2 (September 3, 2024). http://dx.doi.org/10.3389/fanpr.2024.1419391.

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In WiFi 7 (IEEE 802.11be), Multiple Input Multiple Output (MIMO) technology plays a crucial role in enhancing throughput. This combination enables numerous applications for wearable WiFi devices. For instance, WiFi can be utilized for tracking and fall detection purposes. Additionally, wearable devices used in gaming, vital signal monitoring, and tracking can benefit from the implementation of wearable MIMO antennas. Despite the demand for wearable WiFi antennas, specifically in the new 6 GHz band, a significant gap exists in the investigation of antennas that are completely made of textile, a
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41

Dudarev, S. V., D. S. Klygach, and A. V. Dudarev. "Multilayer printed antenna with circular directional pattern and increased directional coefficient." Radioengineering 10 (October 1, 2023). http://dx.doi.org/10.18127/j00338486-202310-18.

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Formulation of the problem. The article explores the possibility of using an array of square open frames to increase the directivity of a multilayer printed antenna with a circular radiation pattern in the azimuthal plane and horizontal polarization. Target. Develop a multi-layer dual-band antenna with increased directivity, emitting/receiving a radio signal in all directions in the azimuthal plane with horizontal polarization. First frequency range: GSM-1800, LTE-1800, UMTS-2100; second frequency band: n79 5G. Results. A new design of a multilayer antenna is proposed, consisting of three prin
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42

Sylvester, Merlyn, Alok Rastogi, Pragyesh Agrawal, and Gazala Pravin. "Analysis of Octagonal Patch K-Band MIMO Antenna with Via for Satellite Communication." International Journal For Multidisciplinary Research 7, no. 3 (2025). https://doi.org/10.36948/ijfmr.2025.v07i03.47907.

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The K-Band frequency, operating at 22.24 GHz, is widely used in satellite communication, suitable for wireless point-to-point microwave communication. The band yields an optimal small and compact antenna design for Law enforcement RADAR systems, vehicular speed detection and collision avoidance systems and satellite communication. This research focuses on the development of an octagonal patch microstrip antenna with vias and slot suitable to work for satellite communication. The proposed MIMO antenna is designed in ANSYS HFSS using RT Duroid 5880 material that has relative permittivity 2.2 and
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43

Geyikoglu, Mirac Dilruba. "FLEXIBLE UWB CIRCULAR POLARIZED SIX-PORT MIMO ANTENNA FOR INTERNET OF MEDICAL THINGS-BASED SMART BELTS." Physica Scripta, October 10, 2024. http://dx.doi.org/10.1088/1402-4896/ad85ae.

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Abstract This study presents a six-port multiple-input and multiple-output (MIMO) antenna developed to meet the diversity requirements of body-centered communication in the Internet of Medical Things (IoMT) based smart belts. The proposed antenna consists of six identical elements with a coplanar waveguide (CPW) structure. The antenna achieves a small profile area of 36 × 42 mm and a height of 0.76 mm with the careful placement of its elements. There are circular patches and a CPW feed structure at the center of the antenna. The distance between the ground and the patch is set intuitively by c
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44

Subbaraj, Sangeetha, and Shweta B. Thomas. "Reconfigurable Antennas and their Practical Applications‐ A Review." Radio Science, September 11, 2023. http://dx.doi.org/10.1029/2023rs007656.

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AbstractThis paper presents the review on the design of various reconfigurable antennas and their applications in the current scenario. There are more challenges involved in the design of these antennas. This paper also describes the various methods used for reconfiguring the frequency bands. The single parameter reconfiguration and hybrid reconfiguration examples are analyzed with their performances. The parameters such as gain, efficiency, size of the existing antenna is compared. The various switches deployed in the antenna for achieving the reconfiguration are presented in this paper. The
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45

Lee, Doojin, and Alexander Yakovlev. "Investigation of dual-mode cloaked cylindrical slot antennas with a pulsed radar signal processing." AIP Advances 14, no. 10 (2024). http://dx.doi.org/10.1063/5.0231729.

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In this paper, the cloaked slot antennas (CSAs) in a circular conducting cylinder have been proposed, numerically studied, and fundamentally characterized with respect to the pulsed radar aspects. The two cylindrically slotted antennas have been introduced, namely the axially slotted cloaked antenna and the circumferentially slotted cloaked antenna (CSCA). These two cloaked slot antennas have been parametrically studied to explore the antenna’s resonant characteristics together with their cloaking performance. The resonant frequency of the antennas is controlled by the parameters of the apertu
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Froes, Eduarda, Paulo F. Silva Junior, Ewaldo E. C. Santana, et al. "Monopole directional antenna bioinspired in elliptical leaf with golden ratio for WLAN and 4G applications." Scientific Reports 12, no. 1 (2022). http://dx.doi.org/10.1038/s41598-022-21733-z.

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AbstractIn this work, it is proposed the development a new monopole directional antenna, bioinspired in elliptical leaf, with cut by golden ratio, for 4G band application, by the use of the technique of the cut of the radiating element for the increasing of the antenna perimeter, being the first work to use this technique in a bioinspired antenna, promotes resonance frequency turned, and reconfiguring of the antenna parameters as bandwidth, radiation pattern and gain, with the use of the reflector near to the group plane, without the insertion of active devices as the pin diode or change in ra
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