Design of High Frequency Transmitter's DSP Unit Based on Zero-intermediate Frequency Technology
Ning Geng-xin · Science Technology and Engineering · 2009
Because the frequency band is narrow,HF transmitter,which doesn't have the intermediate frequency,can be easily realized using the high quality digital up converter AD9857.DSP unit is the core part of transmitter,mainly including functional modules such as baseband filter,modulation and RF generator,AGC,ALC and so on.The realization of the DSP unit's circuit and the design methods of those modules are analyzed.