A 75–110 GHz Digitally-Probed Artificial Dielectric phase demodulator in 65nm CMOS

This paper introduces the Digitally Probed Artificial Dielectric (DiPAD) demodulator: a direct carrier frequency and phase demodulator that operates by digitally detecting the voltage standing-wave response of periodically loaded transmission lines with CMOS sensors. The proposed demodulator allows for the direct demodulation of phase or frequency encoded signals without the need for an analog to digital converter, enabling the construction of a simpler, more power efficient mm-wave receiver. The proposed DiPAD demodulator was implemented in 65nm CMOS technology and operates at carrier frequencies up to 110 GHz, while consuming only 0.47mW of DC power and occupying only 0.16mm² of silicon area.