Design of a 60 GHz receiver RF front-end integrated with substrate integrated waveguide

In this paper, a 60 GHz radio frequency (RF) front-end for receivers is designed, which can work as a down-converter mode or a demodulator mode by slightly changing the assembly process. The RF covers 55 to 65 GHz while the IF is from 3 to 5 GHz as a converter and 0 to 5 GHz as a demodulator. The single-side band noise figure (NF) is predicted to be less than 4.53 dB and the conversion gain is higher than 27 dB (down-converter mode) or 24 dB (demodulator mode). In addition, all circuits are integrated on a 22 mm × 33.5 mm PCB. A Substrate Integrated Waveguide (SIW) is used to connect monolithic microwave integrated circuits (MMICs), and also designed as a passive circuit. This novel structure is suitable for hermetic sealing and has excellent electromagnetic compatibility (EMC) performance. The high performance and compact structure are most suitable for military and space applications.