LO Chain (×12) Integrated 190-GHz Low-Power SiGe Receiver With 49-dB Conversion Gain and 171-mW DC Power Consumption

Le résumé fourni par la source

A 190-GHz mixer-based down-conversion receiver realized in a 130-nm SiGe BiCMOS technology featuring high-speed heterojunction bipolar transistors (HBTs) with (fT, fmax) = (300, 500) GHz is presented. The core part of the receiver consists of a low-noise amplifier (LNA), an active tunable fundamental mixer, an intermediate frequency (IF) buffer amplifier (BA), and an active inverse balun. A wideband, high conversion gain (CG) local oscillator (LO) chain is integrated to make the receiver suitable for applications requiring tunable LO, which contains a multiplier with a multiplication factor of 12 (×12) and a driver amplifier. To exploit the best possible performance with ultralow dc power consumption (Pdc), the mixer and LNA transistors operate at forward-biased base-collector junction voltage (VBC). With a fixed IF frequency at 1 GHz, this receiver exhibits a peak CG of 49 dB with a 14-dB tuning range and a minimum single-sideband noise figure (NF) of 16.5 dB, consuming only 29-mW static dc power for the core part and 171 mW overall, including the LO chain. Within the CG tuning range, this receiver achieves a 6-dB RF bandwidth (BW) from 25 to 32 GHz. Compared with previously reported receivers at similar frequencies, the highest CG and the lowest Pdcwith highly competitive performance in terms of BW, CG tuning range, 1-dB output compression point, and NF have been achieved.

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