宽频带贴片天线阵列Tabu优化设计与分析

胡俊; 李荣明

doi:10.11884/HPLPB202537.250275

宽频带贴片天线阵列Tabu优化设计与分析

胡俊,
李荣明

Design of wideband patch antenna array optimized by Tabu algorithm and performance analysis

Hu Jun,
Li Rongming

摘要

摘要: 针对卫星通信系统对宽频带天线及波束可调性的需求，提出一种覆盖11.45～11.7 GHz和12.25～12.75 GHz的双频段贴片天线设计，并基于阵列分析与优化方法提升系统性能。首先，通过改进贴片结构及馈电网络设计，实现天线在目标频段内S₁₁≤−20 dB，且在11～13 GHz范围内S₁₁≤−15 dB。其次，构建10×10天线阵列，分析其等效全向辐射功率（EIRP）与增益噪声温度比（G/T），验证上下行链路性能指标。进一步提出基于Tabu算法的相位加权优化方法，将波束宽度扩展为等幅同相阵列的1.8倍。仿真实验结果表明，该设计可满足Ku波段卫星通信对宽频带与波束灵活性的要求，为复杂电磁环境下天线系统优化提供新思路。

Abstract:
Background
Modern satellite communication systems demand wideband operation and adaptable beam coverage, particularly in the Ku-band.
Purpose
This study aims to design a dual-band patch antenna covering 11.45–11.7 GHz and 12.25–12.75 GHz and to enhance its system-level performance through array analysis and beamwidth optimization.
Methods
A dual-layer patch structure and feeding network are optimized to achieve impedance matching. A 10×10 array is constructed, and its equivalent isotropic radiated power (EIRP) and G/T are evaluated. A phase weighting method based on the Tabu algorithm is applied to broaden the beamwidth.
Results
The antenna achieves S₁₁≤–20 dB in the target bands and S₁₁≤–15 dB across 11–13 GHz. The array exhibits satisfactory EIRP and G/T values. The beamwidth is expanded to 1.8 times that of a conventional uniform array.
Conclusions
The proposed design meets the requirements of Ku-band satellite communications in terms of bandwidth and beam adjustability, offering an effective solution for optimising antenna performance in complex electromagnetic environments.

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