A 2.15-dB NF, inductorless noise-cancelling wideband LNA with low power consumption

Articles in Press

Document Type : Original Article

Authors

Integrated Circuits Design Laboratory, Faculty of Electrical Engineering, Shahrood University of Technology, Shahrood, Iran

10.22034/tjee.2026.68494.5063

Abstract

In this paper, a wideband low-noise amplifier (LNA) with a combined common-gate (CG) and common-source (CS) architecture is presented. The design featuring low power consumption and inductorless operation. Due to the large area and design complexity associated with inductors, they are eliminated and replaced with alternative techniques. Using gain-boosting approach, the proposed inductorless LNA employs a CG amplifier in a feedback structure as the input stage in order to enhance the input impedance matching condition, hence lowering the power consumption of the whole circuit. In adition, a current reuse approach is employed in the input stage to furtuer lower the power consumption. Besides, a new noise-canceling structure is used to improve overall noise performance. Also the design features variable gain functionality. These strategies result in promising performance metrics. The achieved results include a minimum noise figure (NF) of 2.84 dB, input return loss (S11) below –10 dB, and a maximum gain of 19.15 dB across the frequency range of 200 MHz to 1 GHz. The amplifier operates with a 1.8 V supply, consumes only 8 mW of power and occupies only 0.0202 mm2. The proposed LNA is implemented in a 0.18 µm TSMC CMOS technology and simulated using Cadence Virtusuo.

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Tabriz Journal of Electrical Engineering

Articles in Press, Corrected Proof
Available Online from 11 April 2026

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