Multi-layer approach of polarization agile oscillating-type active integrated array antennas for RFtransmitter front-end
Multi-layer approach of polarization agile oscillating-type active integrated array antennas for RFtransmitter front-end
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DOI：
10.1017/s1759078722000460
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发表时间：
2022-04
影响因子：
1.4
通讯作者：
Maodudul Hasan;E. Nishiyama;I. Toyoda
中科院分区：
文献类型：
--
作者：
Maodudul Hasan;E. Nishiyama;I. Toyoda
摘要本文提出了一种极化可切换自激振荡有源集成阵列天线（AIAA），采用多层方法。该天线包括两个天线元件、四个PIN二极管和采用微带线谐振器的古恩振荡器。通过对阵列天线馈电网络的重新配置，实现了倾斜极化（± 45°）切换。多层结构允许调整贴片间距，从而有助于最小化天线的旁瓣电平。采用λ/2微带线谐振器的古恩振荡器放置在底层。在振荡频率为9.47 GHz时，AIAA的有效同位素辐射功率（EIRP）为+ 18.25 dBm。与单层结构相比，EIRP提高了8.45 dB以上。拟议的AIAA具有+8.45 dBm的发射功率，1.0%的DC到RF效率，以及在1 MHz偏移频率下−101.8 dBc/Hz的低相位噪声，交叉极化抑制优于12 dB。
Abstract This paper presents a polarization switchable self-oscillating active integrated array antenna (AIAA) using a multi-layer approach. The antenna comprises two antenna elements, four PIN diodes, and a Gunn oscillator employing a microstrip line resonator. Reconfiguring the feed network of the array antenna realizes slant polarization (± 45°) switching. The multi-layer structure allows the patch spacing to be adjusted, thereby helping to minimize the antenna's sidelobe level. The Gunn oscillator, which employs a λ/2 microstrip–line resonator, is placed at the bottom layer. The proposed AIAA has an effective isotopic radiated power (EIRP) of + 18.25 dBm at the oscillation frequency of 9.47 GHz. EIRP is improved by better than 8.45 dB compared to the single-layer structure. The proposed AIAA features a transmitted power of + 8.45 dBm, DC-to-RF efficiency of 1.0%, and a low phase noise of −101.8 dBc/Hz at 1-MHz offset frequency with better than 12-dB cross-polarization suppression.