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Journal articles on the topic 'Small loop antenna'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Tsay, Tain-Sou. "Small Loop Antenna System Design for Radio Direction Finding." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (December 16, 2021): 172–76. http://dx.doi.org/10.37394/23204.2021.20.22.

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In this literature, a low-cost small loop antenna is developed for radio direction finding. It consists of two coupled rectangular counter-wiring loop antennas. A signal-processing circuit is developed also for demodulated outputs. A single rectangular loop antenna is discussed first for illustrating the receiving characteristics and then the proposed two coupled rectangular counter-wiring loop antennas are designed for radio direction finding. Measurements give a large linear detecting range. It is ready for Omni-directional application using another two coupled loop antennas and can be used

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2

Shastri, S. P., R. R. Singh, and K. V. Ajetrao. "Nonuniform C-Band Loop Antenna." Engineering, Technology & Applied Science Research 8, no. 5 (2018): 3496–501. https://doi.org/10.5281/zenodo.1490622.

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Antenna design becomes very difficult at very small wavelengths and a special lab is required to manufacture a small antenna which costs a lot. A new approach is proposed to enhance the bandwidth of the loop antenna which can be designed at very high frequency using conventional PCB design technique. The proposed antenna is a nonuniform loop and covers UWB frequency range. The nonuniform structure of the loop is designed using the concept of both thin and thick loop antenna together which leads to an improvement in the antenna bandwidth. The proposed nonuniform loop antenna covers a band of 91

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3

Anvesh, Inamdar, and S. Mundada G. "Design and Fabrication of Magnetic Loop Antenna for 5MHz." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 10, no. 4 (2021): 29–32. https://doi.org/10.35940/ijitee.D8448.0210421.

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In the short-wave range, size of the antenna become large and therefore is a major constraint. Magnetic Loop Antenna provides an advantage over other antennas in terms of a smaller size, higher quality factor and better signal to noise ratio. It works on the principle of resonance with the inductor provided by loop and external tuning capacitor operating like a tank circuit. The tunable magnetic loop antenna is designed to work in the high frequency range. The antenna consists of a circular hollow copper pipe, an inductive loop feed and a variable tuning capacitor. The antenna is tuned using v

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Shastri, S. P. R., R. R. Singh, and K. V. Ajetrao. "Nonuniform C-Band Loop Antenna: A New Approach for Future UWB Applications." Engineering, Technology & Applied Science Research 8, no. 5 (2018): 3496–501. http://dx.doi.org/10.48084/etasr.2308.

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Antenna design becomes very difficult at very small wavelengths and a special lab is required to manufacture a small antenna which costs a lot. A new approach is proposed to enhance the bandwidth of the loop antenna which can be designed at very high frequency using conventional PCB design. The proposed antenna is a nonuniform loop and covers UWB frequency range. The nonuniform structure of the loop is designed using the concept of both thin and thick loop antenna together which leads to an improvement in the antenna bandwidth. The proposed nonuniform loop antenna covers a band of 91.4% which

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5

Wu, Minghe, Baohua Teng, Chutian Shen, et al. "Application of Stokes' Theorem to electrically small loop antenna radiation." International Journal of Electrical Engineering & Education 54, no. 3 (2016): 262–72. http://dx.doi.org/10.1177/0020720916681579.

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Stokes' Theorem is applied to derive the retarded vector potential of loop antennas for the radiation of electric field and magnetic field. Simulations of the ideal and the actual magnetic dipole antenna suggest a satisfactory agreement of the two antennas. The simulation results were further experimentally tested by the demonstration experiment, which indeed confirmed the simulation results. The direction of radiated electric field in the experimental setup is shown in a vivid way. The theoretical simplification and experimental design will significantly provide undergraduate students with an

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6

Zeng, Qinghao, Yuan Yao, Shaohua Liu, Junsheng Yu, Peng Xie, and Xiaodong Chen. "Tetraband Small-Size Printed Strip MIMO Antenna for Mobile Handset Application." International Journal of Antennas and Propagation 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/320582.

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A compact printed multiple-input multiple-output (MIMO) antenna for tetraband (GSM900/1800/1900/UMTS) mobile handset application is presented. The proposed MIMO antenna, which consists of two coupled-fed loop antennas with symmetrical configuration, was printed on a 120 * 60 * 0.8 mm3Fr-4 substrate of relative permittivity of 4.4, loss tangent 0.02. Each element antenna requires only a small area of 22.5 * 25 mm2on the circuit board. The edge-to-edge spacing between the two elements is only0.03λ0of 920 MHz. A slot and a dual-inverted-L-shaped ground branch were added in the ground plane to dec

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7

Tkachenko, Sergey, Jürgen Nitsch, and Moawia Al-Hamid. "High-Frequency Electromagnetic Field Coupling to Small Antennae in a Rectangular Resonator." International Journal of Antennas and Propagation 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/897074.

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The integral-differential equation for the current of an electrically small antenna, inside a resonator, which is induced by given sources, is approximately solved by the so-called “Method of Small Antenna,” both for dipole and loop antennas. The current induced in the antenna is evaluated using the scattering characteristics of small antennas in free space and regularized Green’s function of resonator. As example of application of the theory, a transfer function (“external field→induced voltage”) for the coupling through aperture is calculated.

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Sivaraks, Jesada, and Settapong Malisuwan. "Multiband Antenna Formed of Superimposed Compressed Loops." Applied Mechanics and Materials 548-549 (April 2014): 780–84. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.780.

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A compressed multiple band loop antenna that has multiple superimposed compressed loops. Each compressed loop is formed from numerous segments arrayed in multiple diverse directions so that the enclosed area of that loop and the overall size of the antenna are decreased. Multiple loops are arrayed and superimposed to provide multiple frequency bands of operation and are used to broaden the useful bandwidth of individual-bands. The small size of the compressed antenna facilitates its use in small mobile communications devices requiring internal antennas that operate in close proximity to conduc

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9

Živković, Zlatko, and Antonio Šarolić. "Measurements of Antenna Parameters in GTEM Cell." Journal of Communications Software and Systems 6, no. 4 (2010): 125. http://dx.doi.org/10.24138/jcomss.v6i4.185.

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The paper presents the method for measuring parameters (gain, antenna factor, impedance and radiation pattern) of small antennas in GTEM cell, which is a novel method and environment for antenna measurements. In order toinvestigate the suitability of GTEM cell for this kind ofmeasurement, the measurement results for a biconical dipole, microstrip patch antennas and small loop antenna were compared with those obtained by calibration inside fully absorber lined anechoic site, two-antenna measurements and FEKO simulations. The measurements were carried out over the wide frequency range. Measureme

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10

Chen, Wen-Shan, Chien-Min Cheng, Da-Huei Lee, Chun-Lin Ciou, Wei-Syun Sin, and Guang-Yuan Cai. "Small-Size Meandered Loop Antenna for WLAN Dongle Devices." International Journal of Antennas and Propagation 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/897654.

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This paper proposes a loop-type USB dongle antenna, which is fabricated on a 1.6 mm thick FR-4 substrate for WLAN band systems. The front side of substrate consists of a 50-ohm coaxial line and a multiarm monopole antenna, while the back side has a meandered loop antenna connected to the ground by two via holes. The meandered loop resonates half-wavelength mode at about 2.4 GHz and its higher modes. The higher modes excited by the multiarm monopole form the 5.2 GHz frequency band. The bandwidth of the antenna covers the IEEE802.11 a/b/g WLAN applications. The overall dimensions of the antenna

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11

de Vos, Stuart John, Simone Cosoli, and Jacob Munroe. "The Traveling Wave Loop Antenna: A Terminated Wire Loop Aerial for Directional High-Frequency Ocean RADAR Transmission." Remote Sensing 12, no. 17 (2020): 2800. http://dx.doi.org/10.3390/rs12172800.

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In this paper we document the design, development, results, performance and field applications of a compact directive transmit antenna for the long-range High Frequency ocean RADAR (HFR) systems operating in the International Telecommunication Union (ITU) designated 4MHz and 5MHz radiodetermination bands. The antenna design is based on the combination of the concepts of an electrically small loop with that of travelling wave antenna. This has the effect of inducing a radiated wave predominantly in a direction opposed to that of energy flow on the antenna structures. We demonstrate here that tr

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Alemaryeen, A., and S. Noghanian. "On the Effects of Balun on Small Antennas Performance for Animal Health- Monitoring and Tracking." Advanced Electromagnetics 10, no. 2 (2021): 39–43. http://dx.doi.org/10.7716/aem.v10i2.1691.

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This paper presents the performance evaluation of a sleeve Balun integration in the design of a flexible loop antenna for wildlife health monitoring and tracking applications. To verify the design concept, an experimental antenna is designed, fabricated, and measured in free-space and muscle mimicking phantom. Moreover, investigations are carried out for wearable and implanted antennas in planar and conformal arrangements. In free-space, the antenna is operating within the industrial, scientific, and medical ISM 5.8 GHz band. Balun integration in the antenna design efficiently chokes the curre

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Alemaryeen, A., and S. Noghanian. "On the Effects of Balun on Small Antennas Performance for Animal Health- Monitoring and Tracking." Advanced Electromagnetics 10, no. 2 (2021): 39–43. http://dx.doi.org/10.7716/aem.v10i2.1691.

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This paper presents the performance evaluation of a sleeve Balun integration in the design of a flexible loop antenna for wildlife health monitoring and tracking applications. To verify the design concept, an experimental antenna is designed, fabricated, and measured in free-space and muscle mimicking phantom. Moreover, investigations are carried out for wearable and implanted antennas in planar and conformal arrangements. In free-space, the antenna is operating within the industrial, scientific, and medical ISM 5.8 GHz band. Balun integration in the antenna design efficiently chokes the curre

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14

Dung, Dang Tien, Quoc Dinh Nguyen, Do Quoc Trinh, and Yoshihide Yamada. "Investigating Equations Used to Design a Very Small Normal-Mode Helical Antenna in Free Space." International Journal of Antennas and Propagation 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/7967468.

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A normal-mode helical antenna (NMHA) has been applied in some small devices such as tire pressure monitoring systems (TPMS) and radio frequency identification (RFID) tags. Previously, electrical characteristics of NMHA were obtained through electromagnetic simulations. In practical design of NMHA, equational expressions for the main electrical characteristics are more convenient. Electrical performances of NMHA can be expressed by a combination of a short dipole and small loops. Applicability of equations for a short dipole and a small loop to very small normal-mode helical antennas such as an

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15

Muramoto, M., N. Ishii, and K. Itoh. "Characteristics of a small planar loop antenna." IEEE Transactions on Antennas and Propagation 45, no. 12 (1997): 1818–22. http://dx.doi.org/10.1109/8.650200.

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16

Wu, Z., M. J. Mehler, T. S. M. Maclean, M. J. Lancaster, and C. E. Gough. "High T c superconducting small loop antenna." Physica C: Superconductivity and its Applications 162-164 (December 1989): 385–86. http://dx.doi.org/10.1016/0921-4534(89)91067-8.

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17

Golovkov, A. A., and E. I. Mozhaeva. "Limiting Characteristics for Receiving Small Size Frame Antenna Matching Using Converter Negative Impedance." Journal of the Russian Universities. Radioelectronics, no. 1 (April 17, 2018): 32–37. http://dx.doi.org/10.32603/1993-8985-2018-21-1-32-37.

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The limiting characteristics of electrically small-sized loop antenna matching by means of non-Foster's negative inductance are studied. Various options for including negative inductance in frame antenna structure are considered. The analytical limit expression for the operating frequency band of the small-sized loop antenna with the inclusion of negative inductance in the gap of the conductor frame is obtained. It is shown that for practical implementation the most convenient is the scheme with the inclusion of negative inductance between the conducting plane and the free output of the frame.

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18

Saragih, Rusmin. "Design of Loop Antenna for 5G Wireless Communications." International Innovative Research Journal of Engineering and Technology 6, no. 1 (2020): EC—14—EC—26. http://dx.doi.org/10.32595/iirjet.org/v6i1.2020.132.

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A design of a loop antenna is proposed for future 5G wireless communication. The radiating element is producing a second resonance at 38 laterally slimmed in a hemispherical manner to intensify the surface current density along the hemispherical contour, producing a second resonance at 55 GHz. In the previous paper, they implemented a wave antenna for communication. Using wave antenna for communication, the antenna size is very much small when compared to another antenna. In the wave antenna, the design of the antenna cannot increase bandwidth or wavelength, so that can get poor communication

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19

Wi, Seokju, Hoseung Lee, Jeonghwan Kim, Rui Li, Hyunwoong Shin, and Hyeongdong Kim. "Improved Ground Radiation Antenna Performance for a Vertically Attached PCB." Journal of Electromagnetic Engineering and Science 23, no. 5 (2023): 452–54. http://dx.doi.org/10.26866/jees.2023.5.l.18.

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A small, loop-type ground radiation antenna for 2.4-GHz WLAN applications in the complex ground with two vertically attached printed circuit boards (PCBs) was designed. In the presence of a vertical PCB (sub-PCB), the antennas in two different positions, far from and near the sub-PCB, were designed. The current distribution of the complex PCB was stronger near the sub-PCB. Therefore, the coupling between the antenna and the complex PCB was stronger when the antenna was located near the sub-PCB. The antenna close to the sub-PCB obtained more than twice the 3:1 VSWR bandwidth and the efficiency

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20

Katireddy, H. R., M. V. Narayana, and G. Immadi. "Innovative Design and Analysis of an Electrically Small Reconfigurable Antenna for GPS and Blue Tooth Applications." Engineering, Technology & Applied Science Research 11, no. 5 (2021): 7684–88. http://dx.doi.org/10.48084/etasr.4465.

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In this paper, an electrically small, planar antenna with broad side radiation pattern is presented. The design contains a dipole and a segmented circular loop which works equivalent to that of a magnetic dipole. A circular patch with slots is used to provide impedance matching. In general, electrically small antennas suffer from narrow bandwidth. In this paper, the reconfigurability of the small antenna for two different applications, 1.5GHz and 2.4GHz, is discussed. This reconfigurability was achieved by using a BAR 64-03W pin diode to adjust the resonant frequency. Two reconfigurable freque

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21

Huang, Yuxuan, Zeqi Zhu, Shuting Cai, Xiaoming Xiong, and Yuan Liu. "Broadband Dual-Polarized Multidipole Antenna for Base Station Applications." International Journal of Antennas and Propagation 2021 (September 9, 2021): 1–8. http://dx.doi.org/10.1155/2021/4206702.

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A wideband dual-polarized multidipole antenna for base station applications is proposed. It consists of a pair of large square-shaped loop dipoles and a pair of small rectangle loop dipoles as radiation elements. A pair of small rectangle loop dipoles is fed by T-shaped feed structure which is in the large square-shaped loop dipoles radiating arm so that the antenna generates an additional resonance and obtains a wider bandwidth. The proposed antenna was fabricated and measured, and the results show that the antenna achieves a wide impedance bandwidth of 63.7 % with VSWR<1.5 covering the fr

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22

Austin, Brian A., Alan Boswell, and Michael A. Perks. "Loss Mechanisms in the Electrically Small Loop Antenna [Antenna Designer's Notebook]." IEEE Antennas and Propagation Magazine 56, no. 4 (2014): 142–47. http://dx.doi.org/10.1109/map.2014.6931671.

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23

Huang, Jinfeng, and Aoran Li. "An implantable loop antenna with Hilbert curve structures." Journal of Physics: Conference Series 2209, no. 1 (2022): 012008. http://dx.doi.org/10.1088/1742-6596/2209/1/012008.

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Abstract In this work, an implantable loop antenna with Hilbert curve structures is proposed. This antenna uses Hilbert curves to achieve extremely small electrical dimensions. In addition, we use magnesium instead of copper in the antenna structure, as it is healthier than copper. The proposed antenna covers a frequency band ranging from 765 to 1143 MHz (S11< -10 dB), a high efficiency (1.5%), and a maximum realized gain of -15.42 dBi. It is a promising candidate for implantable capsule antenna in medical devices.

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24

Jang, Eun-Seok, Che-Young Kim, Dae-Geun Yang, and Sung-Su Hong. "Suppressed Band Characteristics of an UWB Conical Monopole Antenna with Split Loops Based on the Equivalent Circuit." International Journal of Antennas and Propagation 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/5375036.

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In this study, the principle of band suppressing an UWB antenna by attaching a small resonator is explained by developing its equivalent circuit. The realized UWB antenna is a conical monopole antenna that contains a split loop for band suppression. The conical monopole antenna corresponds to a transmission line terminated with load impedance, and the split loop is an LC resonator. The coupling between the conical monopole antenna and the split loop is represented as mutual inductance. Equivalent circuits for the UWB antenna suppressing single band [WLAN] and dual band [WLAN, WiMAX] have been

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Haque, Md Ismail. "Path loss and group delay investigation for in-human body to on-human body transmission using dipole and loop antenna." IIUC Studies 20, no. 1 (2023): 121–40. http://dx.doi.org/10.3329/iiucs.v20i1.69053.

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The most critical aspects for a successful transceiver design for wireless body area communication system are path loss and group delay investigation of the human body. In this research, we used a 150 mm length dipole and 40 mm diameter loop antenna to analyze path loss and group delay at 10-60 MHz HBC band for implant communication. An anatomical human body model in the near field constituency was used with FDTD simulations to build the path loss model. For a small dipole antenna, the path loss increases by an exponent of 6.62 with distance, especially along the height direction of the body,

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26

Kang, Ho Jae, Jung Ju Bang, Chang Su Huh, and Uk Youl Huh. "Alternative Antenna Research to Optimize MIL-STD-188-125-1 Standard Shielding Effectiveness Measurement." Applied Mechanics and Materials 548-549 (April 2014): 1347–50. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1347.

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Currently, When Shielding effectiveness(SE) test was conducted in MIL-STD-188-125-1, The experiments are using Loop antenna, Log Periodic(LP) antenna, Biconical antenna about shielding in the frequency range of 10k∼1GHz. But, Their size in the shielding effectiveness test influences chamber construction costs. And these influences play a role in increased production costs. So spiral antenna to clear antenna size problem was proposed. This antenna has small size and function to cover broad frequency compared to other antennas. To evaluate antenna performance, we use commercial software simulati

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27

Lukyanov, V. I., and R. R. Shammasov. "The dipole approximation of electrically small loop antenna." Izmeritel`naya Tekhnika, no. 2 (2019): 50–54. http://dx.doi.org/10.32446/0368-1025it.2019-2-50-54.

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Lin, Y. C., W. S. Chen, B. Y. Lee, S. Y. Lin, and H. W. Wu. "Small Inverted-U Loop Antenna for Gps Application." Journal of Electromagnetic Waves and Applications 24, no. 8-9 (2010): 1033–44. http://dx.doi.org/10.1163/156939310791586133.

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Lin, Shun-Yun, and I.-Han Liu. "SMALL INVERTED-U LOOP ANTENNA FOR MIMO APPLICATIONS." Progress In Electromagnetics Research C 34 (2013): 69–84. http://dx.doi.org/10.2528/pierc12082901.

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Bolton, Timothy, and Morris B. Cohen. "OPTIMAL DESIGN OF ELECTRICALLY-SMALL LOOP RECEIVING ANTENNA." Progress In Electromagnetics Research C 98 (2020): 155–69. http://dx.doi.org/10.2528/pierc19090911.

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31

Mansour, Mohamed, Kamel Sultan, and Haruichi Kanaya. "Compact Dual-Band Tapered Open-Ended Slot-Loop Antenna For Energy Harvesting Systems." Electronics 9, no. 9 (2020): 1394. http://dx.doi.org/10.3390/electronics9091394.

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In this study, a compact dual-band combined loop-slot planar antenna is proposed. (1) Background: multi-function antennas are desired for wireless communication to cover the desired frequency spectrum. (2) Methods: the proposed antenna consists of a semi-rectangular open-ended loop (OEL) operating at the lower frequency band 920 MHz, an open-ended slot (OES) transmission line that provides resonance at the higher band 2.4 GHz, and a feeding port using the asymmetric coplanar strip (ACS) line. The ACS is used to excite the antenna to achieve dual-band performance. The overall dimensions of the

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32

Radha, Sonapreetha Mohan, Mingyu Jung, Pangun Park, and Ick-Jae Yoon. "Design of an Electrically Small, Planar Quasi-Isotropic Antenna for Enhancement of Wireless Link Reliability under NLOS Channels." Applied Sciences 10, no. 18 (2020): 6204. http://dx.doi.org/10.3390/app10186204.

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The performance of wireless networks can be greatly influenced by the radiation pattern and polarization of the antennas at the nodes, especially when they are under non-line-of-sight (NLOS) channel environments. In this study, we designed a planar quasi-isotropic antenna based on the combination of a meandered electric dipole and an electrically small loop at a frequency of 2.45 GHz. Its electrical size (ka) is 0.47 and shows a gain deviation of 3.01 dB with radiation efficiency of 82.6% per the simulation. The performance of a wireless link under the line-of-sight and NLOS channels in an ind

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Perkins, Michael P., Mike M. Ong, Ron D. Speer, and Charles G. Brown. "Analysis of a Small Loop Antenna With Inductive Coupling to Nearby Loops." IEEE Transactions on Electromagnetic Compatibility 53, no. 4 (2011): 900–908. http://dx.doi.org/10.1109/temc.2011.2143718.

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Ting, Ssu-Han, Bo-Ming Jeng, Wen-Shan Chen, Jin-Chern Chiou, and Ching-Hsing Luo. "Broadband Loop Antenna on Soft Contact Lens for Wireless Ocular Physiological Monitoring." International Journal of Antennas and Propagation 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/952746.

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This paper presents a novel loop antenna with broadband for wireless ocular physiological monitoring (WOPM). The antenna is fabricated on a thin-film poly-para-xylylene C (parylene C) substrate with a small thickness of 11μm and dimension ofπ×6.5×6.5 mm2. With the advantage of small size, the proposed antenna is suitable to apply to the soft contact lens and transmit the signal in microelectromechanical Systems (MEMS). Because the pig's eye and human's eye have similar parameters of conductivity and permittivity, the experimental results are obtained by applying the proposed antenna on the pig

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Mohamadi, Cena T., Mohammad Asefi, Sandeep Thakur, Jitendra Paliwal, and Colin Gilmore. "Improved Metallic Enclosure Electromagnetic Imaging Using Ferrite Loaded Antennas." Electronics 11, no. 22 (2022): 3804. http://dx.doi.org/10.3390/electronics11223804.

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Three-dimensional electromagnetic imaging can be used to monitor grain within metallic grain bins. Data acquisition requires multiple antennas surrounding the imaging space, which are used to transmit and receive the electromagnetic energy inside the bin. Due to their presence inside a metallic enclosure and due to very large mechanical forces these antennas are required to be low profile. In addition, since they are part of the imaging domain, they should be simple to model in the imaging software (i.e., using a point source). Existing half-loop magnetic field antennas meet these design crite

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Wang, Fengbin, Yuhua Li, Guangqin Shi, Guozhu Li, Xupeng Li, and Wei Wang. "Design and implementation of high-rigidity and high-precision satellite antenna rotating unit." Journal of Physics: Conference Series 2760, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1742-6596/2760/1/012015.

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Abstract The satellite antenna rotating unit is an important component that drives the satellite antenna to rotate in orbit, mainly composed of a stepper motor, harmonic reducer, and rotating transformer. This type of rotating unit has the advantages of small size, lightweight, high-rated output torque, and long rotating life. The high-stiffness and high-precision satellite antenna rotation unit is based on the existing antenna rotation unit. Through comprehensive improvement design, the measured closed-loop control has a rotation accuracy of better than 0.005°, a torsional stiffness of better

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Chen, Shu-Chuan, Yun-Tsan Lee, and Po-Wei Wu. "Small embedded LTE/WWAN antenna integrated with keyboard ground plane in a laptop computer." International Journal of Microwave and Wireless Technologies 9, no. 4 (2016): 959–64. http://dx.doi.org/10.1017/s175907871600091x.

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A novel small embedded long-term evolution/wireless wide area network (LTE/WWAN) antenna integrated with the keyboard ground plane in a laptop computer is presented. The antenna is installed on a notched region (40 × 8 mm2) of the keyboard ground plane at a distance of 10 mm from the laptop computer hinge. A coupled-fed loop antenna was used because of its suitability for integration with the ground plane and achieving wide operating bands. This antenna can not only be configured to have a compact configuration but also be designed to excite several resonant modes of the hinge slot between the

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Hur, Jun, and Hosung Choo. "Design of a Small Array Antenna with an Extended Cavity Structure for Wireless Power Transmission." Journal of Electromagnetic Engineering and Science 20, no. 1 (2020): 9–15. http://dx.doi.org/10.26866/jees.2020.20.1.9.

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This paper proposes a design of a small array antenna with an extended cavity structure for wireless power transmission. The proposed array element consists of a square radiating loop, which is designed to resonate at 5.8 GHz, and an extended cavity structure to reduce the mutual coupling between adjacent elements. We derive the optimal element number in a limited space by considering the input power for each element, fabrication cost, and aperture efficiency of the system. To verify the suitability of the proposed a small array with an extended cavity structure, a 2 × 2 downscaled array anten

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Constantin, Andreea, and Razvan D. Tamas. "Evaluation and Impact Reduction of Common Mode Currents on Antenna Feeders in Radiation Measurements." Sensors 20, no. 14 (2020): 3893. http://dx.doi.org/10.3390/s20143893.

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Common mode currents on antenna feeders usually occur when feeding a symmetric radiator through an asymmetric line, or when the ground plane is electrically small. Such currents may have magnitudes comparable to the feed currents and therefore have a major impact on the total radiated field. For antenna radiation measurements, both assessment and reduction of the common mode currents on antenna feeders are crucial. Techniques to discriminate antenna and feeder radiation are mainly needed for design and optimization purposes. Antenna gain measurements in a multipath site can be performed by usi

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Jardon-Aguilar, Hildeberto, Jose Alfredo Tirado-Mendez, Raul Pena-Rivero, and Ruben Flores-Leal. "Multiband–multislot planar antenna based on small loop-radiator." Journal of Electromagnetic Waves and Applications 29, no. 15 (2015): 2066–79. http://dx.doi.org/10.1080/09205071.2015.1079506.

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Wang, Hao, Yibo Wang, Jianlan Wu, et al. "Small-Size Reconfigurable Loop Antenna for Mobile Phone Applications." IEEE Access 4 (2016): 5179–86. http://dx.doi.org/10.1109/access.2016.2593794.

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Youn, Sangwoon, Tae Heung Lim, Eunjung Kang, Dae Heon Lee, Ki Baek Kim, and Hosung Choo. "Design of a Miniaturized Rectangular Multiturn Loop Antenna for Shielding Effectiveness Measurement." Sensors 20, no. 11 (2020): 3178. http://dx.doi.org/10.3390/s20113178.

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This paper proposes a novel miniaturized rectangular loop antenna sensor consisting of a multiturn wire and a cuboid ferrite core. The lateral surface of the ferrite core is tightly wound by the multiturn wire. To verify its feasibility, the antenna sensor is fabricated, and the antenna factor (AF) levels are measured using the three-antenna method from the very low frequency (VLF) to the high-frequency (HF) bands. The measured AF levels are 31.8 dB (with a covering plastic case) and 33.1 dB (without a covering plastic case) at 30 kHz. In addition, the proposed antenna is employed in the shiel

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Kim, Jeonghwan, Seokju Wi, Hoseung Lee, et al. "Antenna Sensitivity Enhancement through Noise Suppression in an LTE/GPS Communication Module." Journal of Electromagnetic Engineering and Science 25, no. 3 (2025): 304–6. https://doi.org/10.26866/jees.2025.3.l.26.

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This letter discusses antenna sensitivity enhancement in an LTE/GPS communication module for vehicle-to-everything applications by addressing onboard noise suppression. The performance of antennas in smart vehicles is increasingly complex due to the concentration of electronic devices within small structures, which impacts signal reception. Onboard noise generated by other unknown electronic components on the PCB can couple through the resonance structure of the other antenna, significantly degrading performance. The proposed solution includes an equivalent noise circuit and two double-branch

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Turner, Leigh. "Comments on \"Loss Mechanisms in the Electrically Small Loop Antenna\" [Antenna Designer's Notebook]." IEEE Antennas and Propagation Magazine 57, no. 5 (2015): 123–24. http://dx.doi.org/10.1109/map.2015.2470669.

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Park, Won Bin, Young-Mi Park, and Keum Cheol Hwang. "Ferrite-Loaded Spidron Fractal Loop VHF Antenna for UAV Applications." Applied Sciences 10, no. 15 (2020): 5392. http://dx.doi.org/10.3390/app10155392.

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In this letter, an electrically small Spidron fractal loop antenna operating in the VHF band is proposed. The ferrite material, which consists of a nickel-zinc combination, is loaded into inside of the loop antenna to increase the gain of the antenna in the low frequency band. To minimize the magnetic loss of the ferrite in the high frequency band, the amount and configuration of the ferrite are optimized using a genetic algorithm. Through this optimization step, the amount of the ferrite is decreased to 37.5% and the gain of the antenna in the high frequency band is improved. The size of the

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Long, Shuo, and Wei Ping Jing. "Design of NFC Tag Loop Antenna Based on PCB Material." Advanced Materials Research 1082 (December 2014): 547–50. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.547.

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The Near Field Communication (NFC) is a short-range radio technology operating in the frequency of 13.56 MHz. This paper introduces a kind of double sided PCB loop antenna which is designed for small size NFC tag working in complex environment, and proposes a solution to improve the quality factor of NFC tag. Based on the electromagnetic wave theory, the NFC communication protocol and the tag equivalent circuit, we discuss the effect of inductance and resistance to the resonance point and the quality factor of NFC tag with MATLAB mathematical tools. Then we use ADS software to modeling and sim

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Xiao zheng, Lai, Xie Zeming, and Cen Xuanliang. "A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations." International Journal of Antennas and Propagation 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/961042.

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A compact loop antenna is presented for mobile ultrahigh frequency (UHF) radio frequency identification (RFID) application. This antenna, printed on a 0.8 mm thick FR4 substrate with a small size of 31 mm × 31 mm, achieves good impedance bandwidth from 897 to 928 MHz, which covers USA RFID Band (902–928 MHz). The proposed loop configuration, with a split-ring resonator (SRR) coupled inside it, demonstrates strong and uniform magnetic field distribution in the near-field antenna region. Its linearly polarized radiation pattern provides available far-field gain. Finally, the reading capabilities

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Ban, Yong-Ling, Shun Yang, Joshua Le-Wei Li, and Rui Li. "Printed Internal Pentaband WWAN Antenna Using Chip-Inductor-Loaded Shorting Strip for Mobile Phone Application." International Journal of Antennas and Propagation 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/516487.

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A compact size on-board printed antenna using capacitive coupled-fed excitation to generate multiple resonant modes for penta-band WWAN operation (GSM850/900/GSM1800/1900/UMTS2100) is presented in this paper. The proposed antenna occupies only a small footprint of 15 × 25 mm2on one corner of the circuit board and a protruded ground of 10 × 15 mm2is displaced with close proximity to the antenna portion. The proposed antenna has a very simple structure which is composed of two separate strips: a loop strip with an inserted chip inductor and an L-shaped feeding strip. The loop strip is shorted to

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Mueller, Carl H., Richard Q. Lee, Robert R. Romanofsky, et al. "Small-Size X-Band Active Integrated Antenna With Feedback Loop." IEEE Transactions on Antennas and Propagation 56, no. 5 (2008): 1236–41. http://dx.doi.org/10.1109/tap.2008.922628.

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Hsieh, Wang-Ta, and Jean-Fu Kiang. "A Small Broadband Folded-Loop Antenna With Disk-Loaded Monopole." IEEE Antennas and Wireless Propagation Letters 9 (2010): 1248–50. http://dx.doi.org/10.1109/lawp.2011.2106476.

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