双频段、高增益、超低副瓣毫米波面天线

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中图分类号： TN823 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.06.05

Abstract：Low sidelobes，especially ultra-low sidelobes，are always a challenge in antenna design.For the millimeter waveantennas，they also bring about dificulties in manufacturing，uncertainty in machining inaccuracy，large loss and soon.With a special design from antenna implementation，feed，reflector structure and configuration，etc，a reflector antenna that can operate simultaneously in the w（51.26-58.O GHz）and Ka frequency bands （22.24-31.4GHz） isfabricated.The measured sidelobe levels of w and Ka frequency bands are less than -50 dBand -35dB and the antenna gains at the center frequency reached 4o.1 dBi and 35.O dBi respectively. The design principles and the design processes as well as simulated and measured results are presented in this paper.The results are analyzed and compared with each other，and the basic consistence between them validates the correctness of the design process and the practicality of the design result.

Keywords：ultra-low sidelobe；millimeter wave；dual frequency band；high gain；reflector

0 引言

毫米波反射面天线具有结构简单、尺寸小、增益高和分辨力高等优点，因而在探地雷达[1]、合成孔径雷达[2-3]、光学成像及通信4等领域得到了广泛应用。（剩余19415字）