期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 20, 期 6, 页码 1043-1047出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2021.3070219
关键词
Dual band; Microstrip antenna arrays; Bandwidth; Antennas; Antenna measurements; Impedance; Reflection coefficient; Differential feeding; microstrip grid array antenna (MGAA); patch antenna; shared-aperture
资金
- National Science Foundation of China [61901266, 41874174, 61931007]
- Opening Fund of National Key Lab of Electromagnetic Environment [201802003]
- SF ofAnhui Province [2008085MF186, KJ2020A0024]
- fund for Key Lab of Electromagnetic Scattering [61424090107]
This letter presents a design of a shared-aperture dual-band differentially fed array antenna, which enhances the impedance bandwidth at 28GHz and achieves good antenna performance at both 28GHz and 38GHz dual bands.
The design of a shared-aperture dual-band differentially fed array antenna with microstrip grid and patches is presented in this letter. The patches as high-frequency elements operating at 38 GHz are inserted into microstrip grid array antenna (MGAA) operating at the low-frequency band of 28 GHz. The impedance bandwidth of MGAA can be enhanced from 3% to 16% at 28 GHz due to the introduced resonance from its coupling with the patches. The measurement shows that the proposed antenna can achieve the impedance bandwidths of 15.65% and 16.7%, isolation of more than 20 dB, and peak gains of 14.7 and 14.5 dBi at dual bands of 28 and 38 GHz, respectively. Therefore, the design scheme will be useful for the dual-band millimeter-wave 5G applications.
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