强激光与粒子束2024，Vol.36Issue(1)：23-29,7.DOI:10.11884/HPLPB202436.230260
光导微波源阵列合成时控技术初步研究
Primary study on time control technology of active phased array based on photoconductive microwave source
摘要
Abstract
Solid-state photoconductive microwave source based on wide-bandgap photoconductive semiconductor is a new way of high power microwave generation.The scheme has the characteristics of high power density and wide frequency band,and its low time jitter characteristic makes it have great potential in power synthesis.The construction of active phased array of photoconductive microwave devices using optical beamforming network is an important way for the application of photoconductive microwave devices.In this paper,the principle of optical microwave phased array system is analyzed,and the theoretical models of differential true delay phased array and true delay phased array considering phase random error are constructed.The key factors affecting power synthesis and beam scanning are quantitatively analyzed and simulated,and the delay precision index is proposed.The results show that for the n×10 array transmitting signal at 1 GHz,when the delay phase variance is less than 10 ps,the pointing deviation is less than 0.2°and the peak gain loss is less than 2%.When the delay step accuracy is less than 10 ps,the pointing deviation is less than 0.2°,and the peak gain loss is less than 0.03%.On this basis,the real time delay network architecture of photoconductive microwave is designed,which provides a reference for the development of higher power and larger scale photoconductive microwave synthesis technology in the future.关键词
宽禁带光导半导体/有源相控阵/光波束形成网络/光真延时/时延误差Key words
wide-bandgap photo-conductive semiconductor/active phased array/optical beamforming network/optical true time delay/time delay error分类
信息技术与安全科学引用本文复制引用
牛昕玥,谷炎然,楚旭,姚金妹,易木俣,王朗宁,荀涛..光导微波源阵列合成时控技术初步研究[J].强激光与粒子束,2024,36(1):23-29,7.基金项目
国家自然科学基金项目(62071477、62101577) （62071477、62101577）
湖南省自然科学基金项目(2021JJ40660) （2021JJ40660）
