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A 1-D Electronic Beam-Scanning Monopulse Antenna Array Based on A Compact Stripline Phase-Shifter
IEEE Antennas and Wireless Propagation Letters ( IF 4.2 ) Pub Date : 2020-12-01 , DOI: 10.1109/lawp.2020.3036694
Han-Jun Zhao , Hui Chu , Xiaohua Zhu , Yong-Xin Guo

A completely passive method of enabling 1-D beam-scanning for a monopulse antenna array with controllable sidelobe levels (SLLs) is presented in this letter. To achieve this unique function, a compact frequency-dependent phase-shifter composed of stripline resonators is proposed. This proposed phase-shifter provides similar sensitivity as conventional meander striplines, while its size is much smaller, enabling a successful implementation into a highly integrated feeding network with monopulse functions. The validation is provided by a 4 × 16 monopulse antenna array operated at X-band. A good correspondence is achieved between simulation and measurement for both S-parameter and far-field results. Measurement results of the prototype indicate a scanning range from −54° (10.5 GHz) to 48° (11.5 GHz) can be covered. Within the entire operational frequency range, the sidelobe levels are smaller than −15 dB for the sum channel, while a null depth better than −20 dB is observed in the difference channel. The proposed method is characterized by control simplification and very suitable to be deployed in cost-effective tracking systems.

中文翻译:

基于紧凑带状线移相器的一维电子波束扫描单脉冲天线阵列

这封信中介绍了一种完全无源的方法,可以为具有可控旁瓣电平 (SLL) 的单脉冲天线阵列启用一维波束扫描。为了实现这种独特的功能,提出了一种由带状线谐振器组成的紧凑型频率相关移相器。这种提出的移相器提供与传统曲折带状线相似的灵敏度,而其尺寸要小得多,从而能够成功实现具有单脉冲功能的高度集成的馈电网络。验证由在 X 波段操作的 4 × 16 单脉冲天线阵列提供。S 参数和远场结果的模拟和测量之间实现了良好的对应关系。样机的测量结果表明可以覆盖-54°(10.5 GHz)到48°(11.5 GHz)的扫描范围。在整个工作频率范围内,总和信道的旁瓣电平小于 -15 dB,而在差分信道中观察到优于 -20 dB 的零深度。所提出的方法的特点是控制简化,非常适合部署在具有成本效益的跟踪系统中。
更新日期:2020-12-01
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