A Fast Searching Self Mixing Frequency Conversion System

This paper introduces a novel ultra wideband self mixing frequency conversion system. The final output if signal can remain unchanged with the change of RF signal in a certain frequency range. The realization method is to compress the ultra wideband signal 0.8-20 GHz into the narrow-band IF signal through the folding filter bank. The IF signal is divided into two channels through the power divider: the first LO signal is generated by mixing the IF signal of one channel with the point frequency, the first IF signal is generated by mixing the IF signal of the other channel with the first LO signal after delay, and the second IF signal is generated by mixing with the second LO signal, because the second IF signal does not change with the external signal, so Realize the self mixing frequency conversion function of fast search. It has super fast convergence function and can provide fast guidance function for detection system.