Article
Engineering, Electrical & Electronic
Monika Chauhan, Anil Rajput, Biswajeet Mukherjee
Summary: A low profile circularly polarized high directive Dielectric Resonator Antenna (DRA) for X-band wireless applications is presented and experimentally verified in this study. Adding a corrugated circular ring shaped meta superstrate on the DRA can enhance the peak gain.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2021)
Article
Physics, Applied
Chao Du, Di Zhou, Lin-Ping Feng, Tan-Tan Zhao, He-Tuo Chen, Hai-Wen Liu, Moustafa A. Darwish, Song Xia, Zhuo Xu
Summary: This paper proposes a notch structure of H-shaped dielectric patch antenna (HDPA) with wideband low-profile properties but without additional components. By integrating the H-shaped notch in the dielectric patch, the higher-order TM121 mode is made close to the dominant TM101 mode, greatly expanding the antenna's bandwidth. The accuracy of the proposed HDPA element model is evaluated using a commercial full-wave simulator.
APPLIED PHYSICS LETTERS
(2022)
Article
Computer Science, Information Systems
Shu-Kuan Zhao, Neng-Wu Liu, Qiang Chen, Guang Fu, Xin-Peng Chen
Summary: The dielectric resonator antenna with metasurface loading achieves enhanced performance in terms of low-profile, wide-bandwidth, and compact size. By utilizing the metasurface structure, the antenna's impedance bandwidth is significantly widened to about 17.2%, while maintaining stable gain and radiation pattern.
Article
Engineering, Electrical & Electronic
Lei Guo, Changfei Zhou, Hui Li, Peng Chu, Wen Wen Yang
Summary: A low-profile and broadband dielectric resonator antenna (DRA) design is proposed in this letter, utilizing different air regions to achieve excitation of higher-order DR modes with broadside radiation while suppressing unwanted off-boresight modes. The fabricated prototype covers a frequency range of 3.25-6.1 GHz for potential 5G applications, showing a broad bandwidth of approximately 64.2%, a peak antenna gain of around 9 dBi, and a low profile of only approximately 0.07 lambda(0).
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Yan-Ting Liu, Boyuan Ma, Shaode Huang, Shiyan Wang, Zhang Ju Hou, Wen Wu
Summary: This paper presents a wideband low-profile connected rectangular ring dielectric resonator (DR) antenna array for millimeter wave (mmWave) applications. The array consists of four rectangular ring DRA elements excited by microstrip feedlines. Various modes are excited simultaneously to achieve wideband design. The position of the dielectric arms connecting the DRAs has significant effects on the antenna performance. The prototype demonstrates good agreement between measured and simulated results, with a measured impedance bandwidth of 31.6% (22.52-30.97 GHz).
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Lei Guo, Haiting Fang, Yuxiang Sun, Yangping Zhao, Hui Li, Wenwen Yang
Summary: This article proposes a broadband and low-profile pattern-reconfigurable dielectric resonator antenna (DRA) with four different radiation patterns. By exciting two feeding ports with different phases, it achieves four radiation patterns and wide spatial coverage. The antenna demonstrates good performance in the 3.5 GHz frequency band.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Hauke Ingolf Kremer, Kwok Wa Leung, Mike W. K. Lee
Summary: The low-profile DRA utilizing dielectric and air vias achieves stable radiation performance and wide impedance bandwidth, manufactured entirely using PCB technology. Skillful arrangement of air vias allows control of resonant frequencies for different modes, and the prototype demonstrates a wide impedance bandwidth of 47.5% and a maximum gain of 6.84 dBi. Furthermore, a small antenna footprint and low profile are achieved, with a dual-polarized antenna showing stable radiation performance and high isolation across its passband.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Engineering, Electrical & Electronic
Neng-Wu Liu, Yu-Dong Liang, Lei Zhu, Zhong-Xun Liu, Guang Fu
Summary: A low-profile omnidirectional dielectric resonator antenna with wide-bandwidth and high-selectivity filtering response has been proposed by loading an array of shorting pins inside the antenna. The antenna has shown simultaneous wide bandwidth and stable omnidirectional patterns in the frequency range of 1.85-2.81 GHz, with a 14 dB out-of-band suppression level in the filtering response.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Vusa Lakshmi Parvathi, Anil Rajput, Rajesh B. B. Raut, Biswajeet Mukherjee
Summary: This paper proposes a wideband low-profile chamfered rectangular dielectric resonator antenna (RDRA) for sub-6 GHz 5G new radio band applications. The RDRA is excited with microstrip cross-slot aperture coupling, and the low-profile antenna produces unwanted back radiation. To improve gain on boresight direction, a reflector is placed at the bottom side of the RDRA to reduce back radiation. Slits on the copper layer help control the phase difference between direct waves and reflected waves, and a rectangular stub is added to enhance impedance matching. The proposed antenna offers an impedance bandwidth of 2.74-4.35 GHz and a peak gain of 9.1 dBi. The design is fabricated and experimentally verified.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Materials Science, Ceramics
Juan Liu, Bing Liu, Cheng Chao Hu, Qing Wei Zhou, Kai Xin Song
Summary: (1-x)BaV2O6-xLiF ceramics with an ultra-low sintering temperature of 475 degrees C were synthesized using the solid-state reaction method. The ceramics showed a significant enhancement in the quality factor (Qf) and a near-zero temperature coefficient of resonant frequency (zf). The 0.9BaV2O6-0.1LiF ceramic exhibited excellent properties as a dielectric resonator, including a high Qf value of 16800 GHz, a low zf value of 1.44 ppm/degrees C, and a dielectric constant er of 11.54. The compatibility with the Al electrode was confirmed, and a millimeter-wave antenna with good performance was fabricated. These findings highlight the potential applications of (1-x)BaV2O6-xLiF ceramics in ultra-low temperature co-fired ceramic technology and 5G millimeter-wave antennas.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Zhen-Guo Liu, Chao Zhang, Ren-Jie Yin, Wei-Bing Lu
Summary: This communication proposes a novel multifunctional low-profile Fabry-Perot resonator (FPR) antenna integrated with solar cells (SCs). The antenna has high gain, high aperture efficiency, and good low-profile characteristics, while also being able to collect solar energy and provide power supply for the device. This design offers a good solution for self-powered occasions such as outdoor and satellite communication devices.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Telecommunications
Wenjian Sun, Yang Yu, Yingdong Hu, Wenwen Yang, Jianxin Chen
Summary: This paper investigates a low-profile wideband dielectric resonator antenna that achieves a wide impedance bandwidth of 16.6% by effectively increasing the resonant frequency of the fundamental mode and merging it with a high-order mode. The antenna is compact and suitable for beam-scanning applications and can be integrated with other RF circuits.
CHINA COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Meng Fei Zhou, Bing Liu, Cheng Chao Hu, Kai Xin Song
Summary: MgF2 ceramics were prepared using the solid-state reaction method, and their microwave dielectric properties were studied for the first time. The ceramics' permittivity (er) and quality factor (Qf) were found to be influenced by porosity and lattice energy, respectively. The best microwave dielectric properties (epsilon(r) = 4.67, Qf = 92,233 GHz, and tf = 67.1 ppm/degrees C) were achieved at a sintering temperature of 1100 degrees C. MgF2 ceramic, with its low permittivity and high Qf value, shows potential as a substitute for polymer-based FR4 epoxy in the 5G/6G era. An X-band microstrip patch antenna made with MgF2 ceramics demonstrated excellent performance, with a return loss (S11) of 23.39 dB and an impedance bandwidth of 318 MHz.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Zhen-Xing Xia, Kwok Wa Leung, Pengfei Gu, Rushan Chen
Summary: This study investigates a three-dimensional (3-D)-printed dual-fed dual-frequency dielectric antenna for vehicular communications. The antenna combines a dielectric resonator (DRA) antenna and a dielectric lens antenna, providing good performance in both S- and X-bands for various vehicle communication scenarios.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Computer Science, Interdisciplinary Applications
Jian-Xin Chen, Xue-Ying Wang, Ye-Xin Huang, Ling-Ling Yang, Shi-Chang Tang
Summary: A new technology is proposed to expand the axial ratio (AR) bandwidth of a circularly polarized (CP) dielectric patch (DP) antenna while maintaining a low-profile characteristic. By carefully controlling the position and size of air holes introduced in the DP, the technology effectively broadens the AR bandwidth by merging degenerate modes. Experimental results show good agreement between simulated and measured outcomes.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2021)
