【作者】 李子涵； 沈纪元； 谢富根； 宗显政； 岳松；

【Author】 Li Zihan;Shen Jiyuan;Xie Fugen;Zong Xianzheng;Yue Song;School of Electronic Science and Engineering,University of Electronic Science and Technology of China;Beijing Institute of Space Long March Vehicle;

【机构】 电子科技大学电子科学与工程学院； 北京航空长征飞行器研究所；

【摘要】 本文提出了一种Ku波段基于定向耦合器的相位可控波导和差网络。和差网络由3 dB波导定向耦合器以及鳍片移相器构成,定向耦合器实现功率和初步的相位分配,再经过可调鳍片移相器的调整,实现和差信号的输出。仿真结果表明,在Ku波段频率15.75 Ghz附近,和差网络端口反射系数小于-11 dB,端口间隔离度大于21 dB,输出端口间的幅度差小于0.15 dB,相位差在±4°以内。更多还原

【Abstract】 This paper presents a Ku-band phase-controllable waveguide sum-and-difference network based on directional couplers.The sum-and-difference network is composed of 3 dB waveguide directional couplers and tunable fin phase shifters.The directional couplers perform power division and initial phase allocation,while the fin phase shifters provide fine phase adjustment to realize sum and difference outputs.Simulation results show that,at around 15.75 GHz in the Ku-band,the proposed network achieves an input return loss better than 11 dB,port-toport isolation greater than 21 dB,amplitude imbalance between the output ports less than 0.15 dB,and phase difference within ±4°.更多还原