用于极化汽车雷达谐波抑制的低损耗波导滤波器

2020 IEEE USNC-CNC-URSI North American Radio Science Meeting (Joint with AP-S Symposium) Pub Date : 2020-07-05 DOI:10.23919/USNC/URSI49741.2020.9321613

Jinkai Wu, A. Nashashibi, M. Kashanianfard, K. Sarabandi

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引用次数: 2

摘要

设计并制作了一种75-83GHz波导带通滤波器，用于极化汽车雷达乘法器链的谐波抑制。雷达使用乘法器/放大器链从x波段的源获得所需的e波段信号。实验结果表明，该滤波器在72 GHz(7次谐波)和85.5 GHz(9次谐波)下均能抑制50 dB以上的信号，通频带波纹小于1 dB，群延迟小于500 ps。该滤波器由放置在矩形波导e平面上的穿孔隔膜制成。利用高精度的激光切割机和黄铜片成功地减小了加工误差。该高性能滤波器通过显著降低本底噪声和消除其他干扰影响，提高了FMCW毫米波雷达的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Low-loss Waveguide Filter for Harmonic Rejection in a Polarimetric Automotive Radar

A 75-83GHz waveguide band-pass filter is designed and fabricated for harmonic rejection of a multiplier chain used in a polarimetric automotive radar. The radar uses a multiplier/amplifier chain to achieve the desired signal at E-band from a source at X-band. It is shown that this filter can provide more than 50 dB signal suppression at 72 GHz (7th harmonic) and 35 dB suppression at 85.5 GHz (9th harmonic) with less than 1 dB ripples in the pass-band and less than 500 ps group delay. The filter is made of a perforated septum placed in the E-plane of a rectangular waveguide. Fabrication error was successfully minimized by using a brass sheet and a high precision laser cutter. This high-performance filter is shown to improve the performance of the FMCW MMW radar by significantly lowering the noise floor and eliminating other interference effects.

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来源期刊

2020 IEEE USNC-CNC-URSI North American Radio Science Meeting (Joint with AP-S Symposium)

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