Fig. 1. Photo of the diodes’ chip (a) and its current’s flow (b)

Fig. 2. Structure of 340 GHz sub-harmonic mixer

Fig. 3. Picture of diodes chip's model (a) and structure of anode's port (b)

Fig. 4. Whole simulation diagram of the mixer

Fig. 5. (a) Photo of the mixer; (b) Inner structure of the mixer

Fig. 6. (a) Block diagram of the test platform; (b) Photo of the conversion loss test platform; (c) Simulation and measured results of the conversion loss

Fig. 7. Measured result of the mixer’s noise temperature