A Low-Power Digital Variable-Gain V-Band Receiver Using Current-reused Technique with Embedded Power Detectors
Journal
2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
Date Issued
2021
Author(s)
Chang Y.-T
Abstract
In 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.
Subjects
and V-band
Cherry-Hooper amplifier
conversion gain (CG)
current-reused technique
direct conversion receiver (DCR)
sub-harmonic mixer (SHM)
variable gain amplifiers (VGA)
Analog circuits
Mixers (machinery)
Radio receivers
Variable gain amplifiers
And V-band
Cherry-hooper amplifier
Conversion gain
Current-reused
Current-reused technique
Direct conversion receiver
Direct conversion receivers
Sub-harmonic mixer
Variable gain amplifier
Voltage regulators
SDGs
Type
conference paper