A Concurrent Dual-Band Inverter-Based Low Noise Amplifier (LNA) for WLAN Applications

Abolfazl Bijari, Hossein Khosravi, Mohammadjavad Ebrahimipour

Abstract


low noise amplifier (LNA); concurrent; dual-band; inverter-basedIn this paper, a two-stage concurrent dual-band low noise amplifier (DB-LNA) operating at 2.4/5.2-GHz is presented for Wireless Local Area Network (WLAN) applications. The current-reused structure using resistive shunt-shunt feedback is employed to reduce power dissipation and achieve a wide frequency band from DC to-5.5-GHz in the inverter-based LNA. The second inverter-based stage is employed to increase the gain and obtain a flat gain over the frequency band. An LC network is also inserted at the proposed circuit output to shape the dual-band frequency response. The proposed concurrent DB-LNA is designed by RF-TSMC 0.18-µm CMOS technology, which consumes 10.8 mW from a power supply of 1.5 V. The simulation results show that the proposed DB-LNA achieves a direct power gain (S21) of 13.7/14.1 dB, a noise figure (NF) of 4.2/4.6 dB, and an input return loss (S11) of −12.9/−14.6 dBm at the 2.4/5.2-GHz bands.


Keywords


low noise amplifier (LNA); concurrent; dual-band; inverter-based

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References


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DOI: https://doi.org/10.33180/InfMIDEM2020.404

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