Vol. 106

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2021-12-15

Design of Y-Type Branch Broadband Dual-Polarization Antenna and C-Type Slot Line Notch Antenna

By Yan Yan, Lan Li, Jifang Zhang, Heming Hu, Yonghao Zhu, Hua Chen, and Qing Fang
Progress In Electromagnetics Research M, Vol. 106, 105-115, 2021
doi:10.2528/PIERM21102501

Abstract

In order to satisfy the requirements of 2G/3G/4G wireless communication, two kinds of base station antennas with wideband, dual-polarized and three-modes are proposed in this paper. Firstly, a pair of diamond dipoles is placed in an orthogonal way to realize dual-polarizations, then a pair of Y-shaped branches is added to generate a new mode. The Y-type coupling feeding can increase the impedance bandwidth without increasing the size of antenna. The antenna achieves an impedance bandwidth of 51.75% (1.69-2.87 GHz) with a return loss lower than -14 dB. The antenna also has a stable radiation performance. The gain is greater than 8.6 dBi, and the port isolation is less than -27 dB over the entire frequency band. Then based on above antenna, a C-type slot notched antenna is added to improve anti-interference ability. Finally, band stop characteristics are obtained by etching a C-type slot line resonator on two dipoles. The results show that the bandwidth is 1.7-2.69 GHz, and the sharp notched band is 1.8-1.95 GHz. The C-type slot line here can be regarded as a quarter wavelength resonator in series. Moreover, the isolation of the port is less than -28 dB, and the 3 dB beamwidth in the bandwidth is 66±5˚. Both antennas are fabricated and have dual polarizations, simple structure, and good radiation performance, which can be used in the next generation of wireless communication.

Citation


Yan Yan, Lan Li, Jifang Zhang, Heming Hu, Yonghao Zhu, Hua Chen, and Qing Fang, "Design of Y-Type Branch Broadband Dual-Polarization Antenna and C-Type Slot Line Notch Antenna," Progress In Electromagnetics Research M, Vol. 106, 105-115, 2021.
doi:10.2528/PIERM21102501
http://www.jpier.org/PIERM/pier.php?paper=21102501

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