武汉大学电子信息学院;中国电子科技集团公司第三十八研究所;鸣飞伟业技术有限公司;
液晶相控阵是一种新型相控阵，其核心器件是360°移相角电控液晶移相器，而控制液晶移相器的关键部件是偏压波控驱动器。目前，液晶相控阵波束扫描控制方案主要集中在光学、太赫兹和毫米波等领域，鲜有在微波段的研究。针对液晶相控阵需求，提出了一种微波段液晶移相量与偏置电压关系的计算模型，设计了相应的波束扫描控制系统，并进行了静态指标测试与系统联试。静态测试结果表明，研制的液晶相控阵波束扫描偏压驱动器电压调控范围为0～30 V,电压步进粒度为7.3 mV,输出频率误差小于1 Hz,驱动数据刷新频率大于100 Hz,达到了预期目标，为液晶相控阵实现提供了技术支撑。在系统联试中，液晶相控阵在波控器的控制下波束扫描范围可达±45°。在典型频率下，天线阵波束偏转角度精确，进一步验证了波束控制系统的正确性。
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基本信息:
DOI：
中图分类号:TN821.8;TN623
引用信息:
[1]冯泊宁,高火涛,张小林等.微波液晶相控阵波束扫描控制器研究[J].无线电工程,2023,53(12):2864-2871.
基金信息:
快速扶持项目(61404130132); 湖北省重点自然科学基金(2014CFA093); 中央高校基本科研业务费专项资金重点培育项目(2042019K50264,2042019GF0013,2042020GF0003)~~