A 340G sub-harmonic mixer based on Schottky diode

In this paper, we design a 340GHz sub-harmonic mixer base on a planar Schottky diode. Two low pass filters with compact microstrip resonance cell(CMRC) configurations are used to realize wide RF and IF bands. The measured results show that, in RF frequency range 316-340GHz, a Single Sideband(SSB) conversion loss is better than −17.58dB operating at IF frequency 40GHz with the LO power of 4.5dBm. Compared with a traditional mixer, this mixer requires low LO power with low conversion loss and has wider IF output bandwidth.