Fig. 1. Schottky diode model

Fig. 2. Low-pass filter model

Fig. 3. IF low-pass filter S parameter

Fig. 4. LO low-pass filter S parameter

Fig. 5. Overall structure of the 310 GHz sub-harmonic mixer

Fig. 6. Simulated results of the 310 GHz sub-harmonic mixer

Fig. 7. Simulated results of the series resistance

Fig. 8. Schematic of 310 GHz heterodyne receiver

Fig. 9. 78 GHz waveguide bandpass filter

Fig. 10. Simulated results of the 78 GHz waveguide bandpass filter

Fig. 11. Simulated results of the probe

Fig. 12. Photo of the integrated module

Fig. 13. Measured results of the power

Fig. 14. Measured results of the frequency spectrum

Fig. 15. Measured results of the phase noise

Fig. 16. Measurement of the 310 GHz receiver

Fig. 17. Measured results of the receiver