Abstract

Two variants of a cophased antenna array excited by the Н₀₁ mode of a circular metal waveguide are proposed and analyzed. In the first and second variants, the array consists of 16 and 24 elements (open ends of a rectangular waveguide), respectively. Electrodynamic simulation and optimization of the antenna parameters are performed using the finite-element method and finite-difference method in the time domain. The simulated results show that the optimized first variant provides matching at a level of –15 dB in a band of 25.6–45 GHz, and the second variant provides matching in a band of 27–38 GHz. For both variants, the full efficiency is greater than 0.9 in a band of 26–38 GHz.

中文翻译：

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基于具有 H 01 模式的圆形波导的宽带天线阵列

摘要

提出并分析了由圆形金属波导的Н ₀₁模式激发的同相天线阵列的两种变体。在第一个和第二个变体中，阵列分别由 16 个和 24 个元件（矩形波导的开口端）组成。在时域中使用有限元方法和有限差分方法进行天线参数的电动力学模拟和优化。仿真结果表明，优化后的第一个变体在 25.6-45 GHz 频段内提供了 –15 dB 级别的匹配，而第二个变体在 27-38 GHz 频段内提供了匹配。对于这两种变体，在 26–38 GHz 频段内的全效率都大于 0.9。