小型化S波段瓦式有源相控阵天线系统的设计研究

Design and Research on Miniaturized S-band Tile Type Active Phased-array Antenna System

摘要:

基于运载火箭天基遥测传输的需求和箭载平台对重量、空间及能量消耗的严格限制，本文设计了一种小型轻量化、高集成、低能耗的S波段瓦式有源相控阵天线系统。该系统包括天线阵列模块、发射组件阵列模块、功分网络模块、波束控制器及电源单元模块。本文阐述了该系统的工作原理、组成架构，并根据要求设计了天线阵列、发射组件、高可靠电源单元以及波束控制器等几种关键电路。经暗室实测，本系统中所研制的天线系统样机其波束宽度、轴比、方位面俯仰面±60°波束扫描范围内的ERIP等指标达到设计要求，与目前市场上同频段功能相似的砖式相控阵天线系统相比，其体积减小45%，重量缩减25%，能耗降低15%，更贴合箭载相控阵天线从体积、重量、经济上的应用需求，同时也为相关领域的相控阵天线系统研制提供了指导。

Abstract:

Based on the requirements of space-based telemetry transmission of launch vehicle and the strict limitations of weight, space, and energy consumption on the vehicle platform, this paper designs a miniaturized, lightweight, highly integrated and low-power consumption S-band tile type active phased-array antenna system. The system includes antenna array module, T-module array module, power divider network module. beam controller and power unit module. The article elaborates on the working principle and integrated architecture of the system, and designs several key circuits such as antenna array, T-module, highly reliable power supply unit and beam controller, etc, according to the requirements. The developed antenna system prototype has been tested in a darkroom, and its major indexes such as beam width, axial ratio, ERIP within the beam scanning range of ±60°in the azimuth and elevation plane all meet the design requirements. Compared with brick phased array antenna systems with similar functions in the same frequency band currently on the market, its volume is reduced by 45%, weight is reduced by 25%, and the energy consumption is reduced by 15%, which is more in line with the phased array antenna from the arrow-carrying size, weight, and economic application demand. It also provides guidance for the development of phased array antenna in related fields.