A 4-Channel 10-40 GHz Wideband Receiver with Integrated Frequency Quadrupler for High Resolution Millimeter-Wave Imaging Systems

This paper presents a wideband 4-channel 10-40 GHz receiver (RX) with integrated LO quadrupler and flip-chip packaging in GF8HP 0.12um SiGe BiCMOS technology. The system-level measurements are done with the chip flipped on a low cost RF board. Each receiver channel results in 20-37 dB power conversion gain with a 3-dB RF gain bandwidth (BW) of 10-40 GHz. The measured single-sideband noise figure (SSB NF) and input P1dB at the center frequency of 25 GHz are 9.3 dB (and 8.2 dB) and -17.2 dBm (and -33 dBm), respectively, at low (and high) gain mode. To our knowledge, this wideband receiver represents state-of-the-art performance in terms of bandwidth, linearity and NF. Frequency-modulated-continuous-wave (FMCW) experiment at 15-27 GHz shows the capability of detecting 2 objects with a separation of 1.3 cm.