摘要
针对Ka频段固态功率放大器合成芯片数量多及产品体积大等问题,介绍了一种八路合成的Ka频段160 W固态功率放大器。功放采用波导-微带双探针和基于微带-魔T的波导功率分配/合成器,将8个GaN功放芯片加以合成,最终实现在27.0 GHz~31.0 GHz工作频带内,连续波输出160 W以上的功率信号,利用模拟预失真器使整机三阶互调指标优于-31 dBc,指标优良。功放输出波导采用标准WR-28接口,具有完善的监控和保护措施,可靠性高,适用于卫星通信等发射系统。
In view of the high throughput and wide coverage of Ka-band satellite communication system,a Ka-band 160 W solid-state power amplifier is introduced.The power amplifier adopts the waveguide-microstrip dual-probe design and the wave⁃guide power distribution/synthesizer based on the micro-strip magic T.The eight GaN power amplifier chips are combined to finally realize the continuous wave output power signal of more than 160 W in the 27.0 GHz~31.0 GHz operating frequency band.Using the analog predistorter,the third-order intermodulation index of the whole machine is better than-31dBc,and the index is excellent.The output waveguide of the power amplifier adopts the standard WR-28 interface,with perfect monitoring and protection mea⁃sures,high reliability,and is suitable for satellite communication and other launch systems.
作者
黄薛龙
HUANG Xuelong(Anhui Huadong Polytechnic Institute Residents Limited Company,Wuhu 241002)
出处
《舰船电子工程》
2024年第4期194-198,共5页
Ship Electronic Engineering
基金
安徽省中央引导地方科技发展专项(编号:202101d13050004)
安徽省科技重大专项项目(编号:2021d05050005)资助
关键词
KA频段
波导-微带双探针
微带-魔T合成
模拟预失真
可靠性高
Ka-band
waveguide-microstrip double probe
microstrip-magic T synthesis
analog predistortion
high reli⁃ability
