Ein 0,46–0,52 THz volldifferenzieller quasi-monostatischer FMCW Radar-Sendeempfänger in 90 nm SiGe BiCMOS

Abstract

AbstractA 0.46–0.52-THz fully-differential quasi-monostatic frequency-modulated continuous-wave (FMCW) radar transceiver was designed in a 90-nm SiGe bipolar CMOS technology with $$\textit{f}_{ \textit{T}}/{f}_{\text{max}}$$ f T / f max of 300/480 GHz. The transceiver chip has an area of 2.84 $$\text{mm}^{2}$$ mm 2 . A multiply-by-24 frequency multiplier chain is used to generate a 0.48-THz signal from a 20-GHz input signal. Two 0.48-THz push–push doublers are driven in quadrature for a differential output signal with a measured effective isotropic radiated power of up to $$-$$ - 8.8 dBm at the transmitter at 0.47 THz. A differential subharmonic receiver mixer with a stacked quad topology achieves a measured system conversion gain of 7 dB and a measured single-sideband noise figure of 25.2 dB at 0.471 THz. FMCW radar measurements are performed using an on-board frequency source of a credit card-sized demonstrator at a bandwidth of 60 GHz.