A 112 μW F-band Standing Wave Detector in 40nm CMOS for Sensing and Impedance Detection

This paper presents an integrated standing wave detector for F-band sensing applications. The standing wave on a transmission line is detected at 312 probe locations to provide an accurate representation. Standing wave measurements are performed for differential amplitude and phase variations, demonstrating the potential for magnitude and angle detection. The minimum required RF input power is −25 dBm. The detector is implemented in a 40nm bulk CMOS technology operating from 96–to–140 GHz, while only consuming 112 μW of DC power with a 0.287 mm2 active occupied area.