A Ka-band receiver front end module

A Ka-band receiver front end module is designed and implemented by using MMIC chipset fabricated with GaAs pHEMT process. The MMIC chipset include a millimeter-wave monolithic low noise amplifier, a sub-harmonic mixer and a distributed amplifier designed with OMMIC ED02AH and WIN PP15-20 processes. A substrate integrated waveguides (SIW) filter is also designed to reject image signals of receiver. The measured conversion gain is more than 15dB at the frequency range from 35.3 to 37GHz. This receiver works at LO frequency of 17.5GHz and IF frequency from 0.5 to 1.5GHz.