Two-Stage Compact Wideband Flat Gain Low-Noise Amplifier Using High-Frequency Feedforward Active Inductor

Junyoung Jang; Hansol Kim; Geunhaeng Lee; Tae Wook Kim

doi:10.1109/TMTT.2019.2947483

Two-Stage Compact Wideband Flat Gain Low-Noise Amplifier Using High-Frequency Feedforward Active Inductor

Junyoung Jang, Hansol Kim, Geunhaeng Lee, Tae Wook Kim

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

In this article, a wideband differential low-noise amplifier (LNA) for multiband wireless communication applications is proposed. First, shunt peaking is implemented with a self-biased active inductor (AI) to realize wideband characteristics in a compact size. Second, a cross-coupled capacitor is added to the AI, thus constructing a feedforward path. It adds a signal to the output node so that the bandwidth (BW) can be further increased by compensating the gain reduction according to the frequency. Additionally, the feedforward path creates another feedback loop, generating a negative capacitance. The negative capacitance can cancel parasitic capacitance to increase BW with a cascade amplifier. The prototype LNA is fabricated with a 65-nm CMOS process. It has a gain of 26.7 dB and a BW of 4.1 GHz. The noise figure (NF) is 3 dB and the third-order input intercept point (IIP3) is-14.2 dBm at 2 GHz. It consumes 13.9 mA at a 1-V supply and has an area of 0.009

Original language	English
Article number	8891917
Pages (from-to)	4803-4811
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	67
Issue number	12
DOIs	https://doi.org/10.1109/TMTT.2019.2947483
Publication status	Published - 2019 Dec

Bibliographical note

Funding Information:
This work was supported by an Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korean Government (MSIT) (No. 2017-0-00418).

Funding Information:
Manuscript received February 18, 2019; revised May 12, 2019 and July 23, 2019; accepted August 17, 2019. Date of publication November 5, 2019; date of current version December 27, 2019. This work was supported by an Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korean Government (MSIT) (No. 2017-0-00418). (Corresponding author: Tae Wook Kim.) The authors are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: taewook.kim@yonsei.ac.kr).

Publisher Copyright:
© 1963-2012 IEEE.

All Science Journal Classification (ASJC) codes

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2019.2947483

Cite this

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title = "Two-Stage Compact Wideband Flat Gain Low-Noise Amplifier Using High-Frequency Feedforward Active Inductor",

abstract = "In this article, a wideband differential low-noise amplifier (LNA) for multiband wireless communication applications is proposed. First, shunt peaking is implemented with a self-biased active inductor (AI) to realize wideband characteristics in a compact size. Second, a cross-coupled capacitor is added to the AI, thus constructing a feedforward path. It adds a signal to the output node so that the bandwidth (BW) can be further increased by compensating the gain reduction according to the frequency. Additionally, the feedforward path creates another feedback loop, generating a negative capacitance. The negative capacitance can cancel parasitic capacitance to increase BW with a cascade amplifier. The prototype LNA is fabricated with a 65-nm CMOS process. It has a gain of 26.7 dB and a BW of 4.1 GHz. The noise figure (NF) is 3 dB and the third-order input intercept point (IIP3) is-14.2 dBm at 2 GHz. It consumes 13.9 mA at a 1-V supply and has an area of 0.009",

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note = "Funding Information: This work was supported by an Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korean Government (MSIT) (No. 2017-0-00418). Funding Information: Manuscript received February 18, 2019; revised May 12, 2019 and July 23, 2019; accepted August 17, 2019. Date of publication November 5, 2019; date of current version December 27, 2019. This work was supported by an Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korean Government (MSIT) (No. 2017-0-00418). (Corresponding author: Tae Wook Kim.) The authors are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: taewook.kim@yonsei.ac.kr). Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",

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Two-Stage Compact Wideband Flat Gain Low-Noise Amplifier Using High-Frequency Feedforward Active Inductor

Abstract

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