期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 66, 期 9, 页码 4437-4448出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2018.2851363
关键词
Conical beam; millimeter-wave (MMW) omnidirectional antenna; radial waveguide power divider; wideband dipole antenna
资金
- National Natural Science Foundation of China [61471118, 61722107]
- Natural Science Foundation of Jiangsu Province [BK20150638]
A wideband millimeter-wave (MMW) horizontally polarized omnidirectional antenna with a conical beam is proposed in this paper. The proposed antenna is composed of a radiating circular loop, six arc strips, a one-to-six radial waveguide power divider, and a conical reflector. The radiating circular loop consists of six arc dipoles with curved terminals. The wideband six-way radial waveguide power divider is employed to feed the six arc dipoles, and the wideband performance is achieved by combing the TM010 mode and the TM020 mode of the circular cavity. Six arc strips are utilized as directors to improve the omnidirectional performance at the higher frequency band. The conical reflector is designed to improve the radiation gain and obtain a conical beam in the vertical plane without affecting the horizontal plane omnidirectional performance. A prototype is fabricated and measured. The simulation and measured results show that the proposed antenna can achieve a -10 dB impedance bandwidth of 22.9% with stable radiation patterns in the hand of 39-493 CHz. Owing to the attractive wide bandwidth, good omnidirectional performance, and ease of fabrication, the proposed antenna is a good choice for the forthcoming fifth generation MMW wireless communication systems, especially for the indoor ceiling antenna networking applications.
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