Journal
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS
Volume 33, Issue 5, Pages 555-558Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWT.2022.3222854
Keywords
Noise measurement; Receivers; Gain; Extraterrestrial measurements; Resonant frequency; Logic gates; Impedance matching; Broadband amplifier; CMOS; current-reused; low-noise amplifier; mm-wave; radio astronomy; series resonance
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This letter presents a Q-band (30-50 GHz) ultralow-power low-noise amplifier (LNA) for radio astronomical receivers in 90-nm CMOS technology. It achieves high gain and low power consumption by employing the current-reused technique and a common source stage with source degeneration for simultaneous noise and impedance matching. The measured results show that the proposed LNA has a 20.5-dB small signal gain, 26-GHz 3-dB bandwidth (25.5-51.5 GHz), the lowest in-band noise figure (NF) of 4.2 dB, and consumes only 10.1 mW power with a compact chip area of 0.6 x 1 mm(2). Despite being fabricated in 90-nm CMOS process, this LNA achieves the state-of-the-art figure of merit (FOM) compared to other advanced CMOS processes.
A Q-band (30-50 GHz) ultralow-power low-noise amplifier (LNA) for radio astronomical receivers in 90-nm CMOS technology is presented in this letter. A common source stage with source degeneration is utilized for simultaneous noise and impedance matching. To achieve high gain and low power consumption, the current-reused technique is adopted in this work. According to measurement, the proposed Q-band LNA achieves a 20.5-dB small signal gain with 26-GHz 3-dB bandwidth (25.5-51.5 GHz) and the lowest in-band noise figure (NF) of 4.2-dB noise. The LNA consumes only 10.1 mW with a compact chip area of 0.6 x 1 mm(2). Although this LNA is fabricated in 90-nm CMOS process, it achieves the state-of-the-art figure of merit (FOM) compared to other advanced CMOS processes.
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