A Wideband Noise-Cancelling Receiver Front-End Using a Linearized Transconductor

Duksoo KIM; Byungjoon KIM; Sangwook NAM

doi:10.1587/transele.E100.C.340

A Wideband Noise-Cancelling Receiver Front-End Using a Linearized Transconductor

Duksoo KIM, Byungjoon KIM, Sangwook NAM

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A wideband noise-cancelling receiver front-end is proposed in this brief. As a basic architecture, a low-noise transconductance amplifier, a passive mixer, and a transimpedance amplifier are employed to compose the wideband receiver. To achieve wideband input matching for the transconductor, a global feedback method is adopted. Since the wideband receiver has to minimize linearity degradation if a large blocker signal exists out-of-band, a linearization technique is applied for the transconductor circuit. The linearization cancels third-order intermodulation distortion components and increases linearity; however, the additional circuits used in linearization generate excessive noise. A noise-cancelling architecture that employs an auxiliary path cancels noise signals generated in the main path. The designed receiver front-end is fabricated using a 65-nm CMOS process. The receiver operates in the frequency range of 25 MHz-2 GHz with a gain of 49.7 dB. The in-band input-referred third-order intercept point is improved by 12.3 dB when the linearization is activated, demonstrating the effectiveness of the linearization technique.

Publication: IEICE TRANSACTIONS on Electronics Vol.E100-C No.3 pp.340-343

Publication Date: 2017/03/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E100.C.340

Type of Manuscript: BRIEF PAPER

Category: Microwaves, Millimeter-Waves

Authors

Duksoo KIM
  Seoul National University
Byungjoon KIM
  Seoul National University
Sangwook NAM
  Seoul National University

Keyword

wideband receiver, transconductor linearization, noise-cancelling

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Duksoo KIM, Byungjoon KIM, Sangwook NAM, "A Wideband Noise-Cancelling Receiver Front-End Using a Linearized Transconductor" in IEICE TRANSACTIONS on Electronics, vol. E100-C, no. 3, pp. 340-343, March 2017, doi: 10.1587/transele.E100.C.340.
Abstract: A wideband noise-cancelling receiver front-end is proposed in this brief. As a basic architecture, a low-noise transconductance amplifier, a passive mixer, and a transimpedance amplifier are employed to compose the wideband receiver. To achieve wideband input matching for the transconductor, a global feedback method is adopted. Since the wideband receiver has to minimize linearity degradation if a large blocker signal exists out-of-band, a linearization technique is applied for the transconductor circuit. The linearization cancels third-order intermodulation distortion components and increases linearity; however, the additional circuits used in linearization generate excessive noise. A noise-cancelling architecture that employs an auxiliary path cancels noise signals generated in the main path. The designed receiver front-end is fabricated using a 65-nm CMOS process. The receiver operates in the frequency range of 25 MHz-2 GHz with a gain of 49.7 dB. The in-band input-referred third-order intercept point is improved by 12.3 dB when the linearization is activated, demonstrating the effectiveness of the linearization technique.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E100.C.340/_p

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@ARTICLE{e100-c_3_340,
author={Duksoo KIM, Byungjoon KIM, Sangwook NAM, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Wideband Noise-Cancelling Receiver Front-End Using a Linearized Transconductor},
year={2017},
volume={E100-C},
number={3},
pages={340-343},
abstract={A wideband noise-cancelling receiver front-end is proposed in this brief. As a basic architecture, a low-noise transconductance amplifier, a passive mixer, and a transimpedance amplifier are employed to compose the wideband receiver. To achieve wideband input matching for the transconductor, a global feedback method is adopted. Since the wideband receiver has to minimize linearity degradation if a large blocker signal exists out-of-band, a linearization technique is applied for the transconductor circuit. The linearization cancels third-order intermodulation distortion components and increases linearity; however, the additional circuits used in linearization generate excessive noise. A noise-cancelling architecture that employs an auxiliary path cancels noise signals generated in the main path. The designed receiver front-end is fabricated using a 65-nm CMOS process. The receiver operates in the frequency range of 25 MHz-2 GHz with a gain of 49.7 dB. The in-band input-referred third-order intercept point is improved by 12.3 dB when the linearization is activated, demonstrating the effectiveness of the linearization technique.},
keywords={},
doi={10.1587/transele.E100.C.340},
ISSN={1745-1353},
month={March},}

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TY - JOUR
TI - A Wideband Noise-Cancelling Receiver Front-End Using a Linearized Transconductor
T2 - IEICE TRANSACTIONS on Electronics
SP - 340
EP - 343
AU - Duksoo KIM
AU - Byungjoon KIM
AU - Sangwook NAM
PY - 2017
DO - 10.1587/transele.E100.C.340
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E100-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2017
AB - A wideband noise-cancelling receiver front-end is proposed in this brief. As a basic architecture, a low-noise transconductance amplifier, a passive mixer, and a transimpedance amplifier are employed to compose the wideband receiver. To achieve wideband input matching for the transconductor, a global feedback method is adopted. Since the wideband receiver has to minimize linearity degradation if a large blocker signal exists out-of-band, a linearization technique is applied for the transconductor circuit. The linearization cancels third-order intermodulation distortion components and increases linearity; however, the additional circuits used in linearization generate excessive noise. A noise-cancelling architecture that employs an auxiliary path cancels noise signals generated in the main path. The designed receiver front-end is fabricated using a 65-nm CMOS process. The receiver operates in the frequency range of 25 MHz-2 GHz with a gain of 49.7 dB. The in-band input-referred third-order intercept point is improved by 12.3 dB when the linearization is activated, demonstrating the effectiveness of the linearization technique.
ER -