Research on 330GHz Subharmonic Mixer Based on Global Design Method

The global design method (GDM) is employed instead of the traditional subdivision design method based on circuit unit in the letter. Under the GDM, the circuit is divided into independent transmission line unit, and the complete equivalent circuit is established together with the diode model. The GDM focuses on the overall performance, so it is more efficient. A 330GHz subharmonic mixer based on GDM is presented. The measured results of the mixer show that the optimal conversion loss is 5.1dB near 324GHz.