Design of Continuously Tunable Low Noise Amplifier for Multiband Radio

Aneja, A
Li, XJ
Li, BE
Item type
Conference Contribution
Degree name
Journal Title
Journal ISSN
Volume Title

This paper presents the design of continuously tunable low noise amplifier with frequency tuning range from 2.2 to 2.8 GHz. The amplifier achieves input matching and tunability through a transformer based input matching network. The proposed circuit uses an inductively degenerated common source cascode amplifier to design the amplification stage. The circuit includes a phase shifter circuit to shift the phase of the input signal to achieve tunability through transformer. The LNA achieves a maximum gain of more than 17dB in the entire tuning range. The LNA attains a perfect impedance match across the tuning range and has a stable operation. In addition, it achieves a low noise figure ranging from 1.4dB to 5.2dB.

Software defined radio; Tunable; Impedance Transformer; Phase shifter; Low noise amplifier
2017 Mediterranean Microwave Symposium (MMS), Marseille, 2017, pp. 1-4. doi: 10.1109/MMS.2017.8497156
Rights statement
Copyright © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.