A Wideband Common-Gate Low-Noise Amplifier Using Capacitive Feedback

Toshihiko ITO; Kenichi OKADA; Akira MATSUZAWA

doi:10.1587/transele.E95.C.1666

A Wideband Common-Gate Low-Noise Amplifier Using Capacitive Feedback

Toshihiko ITO, Kenichi OKADA, Akira MATSUZAWA

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In this paper, a capacitive-cross-coupling common-gate (CCC-CG) LNA using capacitive feedback is proposed to improve the noise figure (NF). In the conventional CCC-CG LNA, the transconductance g_m is determined by the input-matching condition while a lager g_m is required to improve NF. g_m of the proposed LNA can be increased and NF can be improved by using the added capacitive feedback. The analytical calculation shows that the proposed LNA can perform better than the conventional CCC-CG LNA. In the measurement results using a 0.18-µm CMOS technology, the gain is 10.4–13.4 dB, NF is 2.7–2.9 dB at 0.8–1.8 GHz, and IIP₃ is -7 dBm at 0.8 GHz. The power consumption is 6.5 mW with a 1.8-V supply.

Publication: IEICE TRANSACTIONS on Electronics Vol.E95-C No.10 pp.1666-1674

Publication Date: 2012/10/01

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Online ISSN: 1745-1353

DOI: 10.1587/transele.E95.C.1666

Type of Manuscript: PAPER

Category: Microwaves, Millimeter-Waves

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Toshihiko ITO, Kenichi OKADA, Akira MATSUZAWA, "A Wideband Common-Gate Low-Noise Amplifier Using Capacitive Feedback" in IEICE TRANSACTIONS on Electronics, vol. E95-C, no. 10, pp. 1666-1674, October 2012, doi: 10.1587/transele.E95.C.1666.
Abstract: In this paper, a capacitive-cross-coupling common-gate (CCC-CG) LNA using capacitive feedback is proposed to improve the noise figure (NF). In the conventional CCC-CG LNA, the transconductance g_m is determined by the input-matching condition while a lager g_m is required to improve NF. g_m of the proposed LNA can be increased and NF can be improved by using the added capacitive feedback. The analytical calculation shows that the proposed LNA can perform better than the conventional CCC-CG LNA. In the measurement results using a 0.18-µm CMOS technology, the gain is 10.4–13.4 dB, NF is 2.7–2.9 dB at 0.8–1.8 GHz, and IIP₃ is -7 dBm at 0.8 GHz. The power consumption is 6.5 mW with a 1.8-V supply.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E95.C.1666/_p

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@ARTICLE{e95-c_10_1666,
author={Toshihiko ITO, Kenichi OKADA, Akira MATSUZAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Wideband Common-Gate Low-Noise Amplifier Using Capacitive Feedback},
year={2012},
volume={E95-C},
number={10},
pages={1666-1674},
abstract={In this paper, a capacitive-cross-coupling common-gate (CCC-CG) LNA using capacitive feedback is proposed to improve the noise figure (NF). In the conventional CCC-CG LNA, the transconductance g_m is determined by the input-matching condition while a lager g_m is required to improve NF. g_m of the proposed LNA can be increased and NF can be improved by using the added capacitive feedback. The analytical calculation shows that the proposed LNA can perform better than the conventional CCC-CG LNA. In the measurement results using a 0.18-µm CMOS technology, the gain is 10.4–13.4 dB, NF is 2.7–2.9 dB at 0.8–1.8 GHz, and IIP₃ is -7 dBm at 0.8 GHz. The power consumption is 6.5 mW with a 1.8-V supply.},
keywords={},
doi={10.1587/transele.E95.C.1666},
ISSN={1745-1353},
month={October},}

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TY - JOUR
TI - A Wideband Common-Gate Low-Noise Amplifier Using Capacitive Feedback
T2 - IEICE TRANSACTIONS on Electronics
SP - 1666
EP - 1674
AU - Toshihiko ITO
AU - Kenichi OKADA
AU - Akira MATSUZAWA
PY - 2012
DO - 10.1587/transele.E95.C.1666
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E95-C
IS - 10
JA - IEICE TRANSACTIONS on Electronics
Y1 - October 2012
AB - In this paper, a capacitive-cross-coupling common-gate (CCC-CG) LNA using capacitive feedback is proposed to improve the noise figure (NF). In the conventional CCC-CG LNA, the transconductance g_m is determined by the input-matching condition while a lager g_m is required to improve NF. g_m of the proposed LNA can be increased and NF can be improved by using the added capacitive feedback. The analytical calculation shows that the proposed LNA can perform better than the conventional CCC-CG LNA. In the measurement results using a 0.18-µm CMOS technology, the gain is 10.4–13.4 dB, NF is 2.7–2.9 dB at 0.8–1.8 GHz, and IIP₃ is -7 dBm at 0.8 GHz. The power consumption is 6.5 mW with a 1.8-V supply.
ER -