A Gain Reconfigurable CMOS Wideband LNA for Sub-7GHz 5G NR Receiver
- Resource Type
- Periodical
- Authors
- Vardhan, G.S.; Pathak, D.; Dutta, A.
- Source
- IEEE Transactions on Circuits and Systems II: Express Briefs IEEE Trans. Circuits Syst. II Circuits and Systems II: Express Briefs, IEEE Transactions on. 71(4):1829-1833 Apr, 2024
- Subject
- Components, Circuits, Devices and Systems
Gain
Wideband
5G mobile communication
Receivers
Topology
Detectors
Switches
Sub-7 GHz 5G low noise amplifier (LNA)
common source (CS) wide band LNA
Pi matching
series and shunt peaking
gain reconfigurable
- Language
- ISSN
- 1549-7747
1558-3791
This brief presents a bandwidth enhancement and gain flatness technique based wideband CMOS low noise amplifier for 5G NR receivers. Wide bandwidth, low noise figure, reconfigurable gain flatness is achieved by using 2-stage common source resistive feedback shunt and series inductive peaking technique respectively. The proposed reconfigurable low noise amplifier achieves gain and noise figure of 25 dB and 2 dB at high gain mode and 15 dB and 3.8 dB at low gain mode respectively. The circuit has a gain control feature to accommodate various input power levels. The designed methodology proves to get wider 3dB bandwidth from 2.5 GHz to 6.5 GHz. The design draws 10.40 mA current (without buffer) from 1.2V supply with a core silicon area of $0.35 mm^{2}$ .