Circularly Polarized Antenna Array 1 × 7 Fed by Power Weighting Distribution

2021 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET) Pub Date : 2021-11-23 DOI:10.1109/ICRAMET53537.2021.9650470

F. Kurniawan, Dewi Anggraeni, S. Aditya, N. L. Muzayadah, G. Prabowo, H. Septanto, B. Setiadi, P. Sitompul, J. Widodo, Y. Izumi

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Abstract

This manuscript presented the development of a circularly polarized (CP) antenna array that implemented square ring slot in the center of the patch and the power weighting distribution method for its feeding line. This array antenna consists of 7 circular patches and is slotted by a square ring slot. Resonant frequency of the antenna design set at 9.4 GHz and its bandwidth 0.8 GHz. A power weighting distribution feeding line is implemented. This method is intended to suppress the sidelobe level of the antenna. Meanwhile, to enhance the CP properties, a square ring slot is inserted over each center of the patch. Then, to accomplish the axial ratio under 3 dB, the patch is truncated by a pair of square shapes at the 45° and -45°. The proposed antenna array has circular polarization with sidelobe level (SLL) around -15.1 dB at the frequency of 9.4 GHz. Its reflection coefficient, S11 bandwidth up to 1 GHz, then lower than -20 dB. 3 dB axial ratio obtained 0.9 GHz.

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功率加权馈电的1 × 7圆极化天线阵

本文介绍了一种圆极化(CP)天线阵的研制，该天线阵在贴片中心采用方形环形缝隙，并给出了其馈线的功率加权分配方法。该阵列天线由7个圆形贴片组成，并由一个方形环形槽开槽。天线设计的谐振频率为9.4 GHz，带宽为0.8 GHz。实现了一种功率加权配电馈线。这种方法的目的是抑制天线的副瓣电平。同时，为了提高CP特性，在贴片的每个中心都插入一个方形环形槽。然后，为了实现3 dB以下的轴向比，在45°和-45°处用一对正方形形状截断贴片。该天线阵在9.4 GHz频率下具有圆极化，副瓣电平(SLL)约为-15.1 dB。其反射系数，S11带宽可达1ghz，然后低于- 20db。3 dB轴比得到0.9 GHz。

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2021 International Conference on Radar, Antenna, Microwave, Electronics, and Telecommunications (ICRAMET)

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