摘要
介绍了由Ku波段信号经过倍频到较高的毫米波Ka波段信号。在毫米波设计了大动态的衰减,输出信号采用数控衰减精确控制大动态变化,通过两级间波导隔离器解决良好的级联匹配。最终实现了超大的衰减动态范围,在Ka波段可保证90 dB的大幅衰减,且制作出了实体,获得了良好的性能指标,并较好地满足了工程需要。
This article describes how Ku band signal can be shifted to Ka band signal by frequency doubling. A large dynamic attenuation in Millimeter wave is designed. The output signal adopts accurate digital attenuation to control the large dynamic change, achieving fine concatenation match through two stages of waveguide isolator, and finally realizes ultra attenuation dynamic range to secure 90 dB attenuation in Ka Band. A prototype is produced and tested with good performance parameter, meeting the requirement of project specification.
出处
《电子科技》
2014年第5期45-47,共3页
Electronic Science and Technology
关键词
KA波段
倍频
数控衰减
Ka Band
frequency doubler
digital controlled attenuation