Conventional dual up-conversion transmitter usually employs an intermediate frequency (IF) mixer and a radio frequency (RF) mixer to convert baseband user signal to IF and RF in sequence.
Adopt IGBT frequencyconversion of German Siemens and voltage feedback series resonance circuit. The conversion efficiency is reaching up to above 97.5%.
采用德国西门子IGBT变频，电压反馈串联谐振电路。变换效率高达97.5%以上。
3
Special requirement in high speed guide way inspection including inspection frequencyup to 200~1000HZ, synchronization in 32 channels and 16 bits A/D conversion are considered in this paper.