Reconfigurable concurrent dual-band low noise amplifier with dynamic output load network for software defined radio

Pathak, D. and Vardhan, S. and Kumar, A. and Dutta, Asudeb (2020) Reconfigurable concurrent dual-band low noise amplifier with dynamic output load network for software defined radio. In: 52nd IEEE International Symposium on Circuits and Systems, ISCAS 2020, 10-21 October 2020, Virtual, Online.

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Abstract

The design and detailed analysis of a Reconfigurable concurrent Dual-band LNA with Dynamic Output Load Network operating in 0.9GHz and 1.8GHz has been demonstrated in 0.18um CMOS process. A common source (CS) cascade topology with serial and parallel LC circuit based input matching was adopted. A new output load network made reconfigurable in terms of high gain(HG) and low gain(LG) mode through the output impedance seen at the respective nodes. The impedance nodes are controlled through control (CTH and CTL) switches. Varactor tuning has been incorporated to input and output to optimize the circuit. The proposed LNA achieves a S21 of 19 dB and 13 dB at 0.9 GHz and 1.8 GHz for high gain mode, and simultaneously 10 dB and 7 dB gain for low gain mode. The extracted simulations shows with noise figure (NF) of 4 dB and 4.2 dB at high gain mode and 3.3 dB and 4 dB at low gain mode respectively. © 2020 IEEE

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IITH Creators:
IITH CreatorsORCiD
Dutta, Asudebhttps://orcid.org/0000-0003-3883-2083
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Concurrent Dual Band LNA, Input matching, Reconfigurable output load network
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 23 Nov 2022 09:07
Last Modified: 23 Nov 2022 09:07
URI: http://raiith.iith.ac.in/id/eprint/11317
Publisher URL:
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