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3.4-mW common-gate and current-reused UWB LNA

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4 Author(s)
Ji-Young Lee ; Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea ; Hyun-Kyu Park ; Ho-Jun Chang ; Tae-Yeoul Yun

A common-gate (CG) low-noise amplifier using the current-reused technique is proposed for both ultra-wideband and low-power consumption. The CG amplifier, employed at the input stage, enables wide-band input matching with low transconductance and the frequency-independent noise figure (NF), compared to the common-source amplifier. The current-reused technique is adopted in order to reduce the power dissipation while achieving a reasonable power gain. Furthermore, the shunt and series peaking technique is adopted for a wide bandwidth. The proposed LNA obtains a 3-dB bandwidth from 2.4 to 11.2 GHz, a maximum power gain of 14.8 dB, a minimum NF of 3.9 dB, and an IIP3 of -11.5 dBm while consuming 3.4 mW from a 1.5 V supply. A 0.18-μm CMOS process is utilized for the fabrication.

Published in:

Silicon Monolithic Integrated Circuits in RF Systems (SiRF), 2012 IEEE 12th Topical Meeting on

Date of Conference:

16-18 Jan. 2012

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