Chang Y.-THSIN-CHIA LU2022-04-252022-04-252021https://www.scopus.com/inward/record.uri?eid=2-s2.0-85118183264&doi=10.1109%2fRFIT52905.2021.9565232&partnerID=40&md5=7574d2e7a787e85d7fc28197fd504bb4https://scholars.lib.ntu.edu.tw/handle/123456789/607111In this paper, we present a low-power digital variable gain receiver at V-band. To save dc power, both the variable gain amplifier and mixer use current-reused technique. In addition, power detectors are also integrated to generate a digital signal to switch to different gain states to improve linearity and avoid the receiver from saturation. Finally, we use the Cherry-Hooper amplifier to achieve the desired conversion gain and use the source follower to match with 50 Ω load. At 60 GHz, the gain control range of the receiver is from 30.89 to 18.64 dB. The 3-dB gain bandwidth is larger than 8 GHz under different gain states. The measured average IP1dB is from-42.55 to-29.23 dBm, and OP1dB is maintained constant under different gain states for four channels. The total dc power consumption is only 32.5 mW for 1.1 V supplied voltage. ? 2021 IEEE.and V-bandCherry-Hooper amplifierconversion gain (CG)current-reused techniquedirect conversion receiver (DCR)sub-harmonic mixer (SHM)variable gain amplifiers (VGA)Analog circuitsMixers (machinery)Radio receiversVariable gain amplifiersAnd V-bandCherry-hooper amplifierConversion gainCurrent-reusedCurrent-reused techniqueDirect conversion receiverDirect conversion receiversSub-harmonic mixerVariable gain amplifierVoltage regulators[SDGs]SDG7conference paper10.1109/RFIT52905.2021.95652322-s2.0-85118183264