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Open AccessArticle

A 30–40 GHz CMOS Receiver Front-End with 5.9 dB NF and 16.5 dB Conversion Gain for Broadband Spectrum Sensing Applications

1
NICE Laboratory, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 341-141, Korea
2
Department of Electronics and Control Engineering, Hanbat National University, Daejeon 305-719, Korea
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(5), 593; https://doi.org/10.3390/electronics8050593
Received: 5 April 2019 / Revised: 16 May 2019 / Accepted: 22 May 2019 / Published: 27 May 2019
(This article belongs to the Section Microwave and Wireless Communications)
A broadband receiver front-end with low noise figure and flat conversion gain response is presented in this paper. The receiver front-end is a part of the broadband spectrum sensing receiver and processes 30–40 GHz of broad input spectrum followed by down-conversion to DC-10 GHz of IF signal. The proposed work is comprised of a low noise amplifier (LNA), on-chip passive Balun, down conversion mixer, and output buffer. To achieve front-end target specification over 10 GHz input bandwidth, the stagger-tuned LNA is employed and the down conversion mixer is loaded with a 3rd-order LC ladder low pass filter. The prototype chip was implemented in 45 nm CMOS technology. The chip achieves 10.3–16.5 dB conversion gain, 5.9 dB integrated NF, and −11 dBm IIP3 from 30 to 40 GHz. The chip is realized within 0.42 mm 2 and consumes 96 mW from a 1.2 V supply. View Full-Text
Keywords: Chebyshev; current-reuse; Ka-band; ladder filter; push–pull; receiver; spectrum-sensing; stagger-tuned Chebyshev; current-reuse; Ka-band; ladder filter; push–pull; receiver; spectrum-sensing; stagger-tuned
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Jung, H.; Utomo, D.R.; Shin, S.; Han, S.-K.; Lee, S.-G.; Kim, J. A 30–40 GHz CMOS Receiver Front-End with 5.9 dB NF and 16.5 dB Conversion Gain for Broadband Spectrum Sensing Applications. Electronics 2019, 8, 593.

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