摘要
设计并制作可调节供电电压的电源适配器,用以保证实车天线放大器的正常工作;通过实测和设计优化,确保测试系统不会引入电磁干扰而影响测试结果;适配器能进行直流电源和射频信号的分离,在车载零部件中频、甚高频、L波段辐射发射测试的同时实现供电和信号提取。
A power adapter was designed,it has the flexible voltage adjustment for the different power supplying of the amplifiers of vehicle antennas.According the real test result and optimized design,no electromagnetic interference was introduced.At the same time,it realized the DC/RF signal separation,met the requirement of the power supply and signal picking-up at the same time during the radiated emission（RE）tests in the frequency range of MW,VHF,L band.
关键词
适配器
天线放大器
电磁干扰
辐射发射
adapter
antenna amplifier
electromagnetic interference
radiated emission
