A 0.6–6.2 GHz wideband LNA using resistive feedback and gate inductive peaking techniques for multiple standards application

Abstract

This paper presents a 0.6-6.2 GHz wideband CMOS low noise amplifier (LNA) for multi-band application. The LNA design is based on a common source (CS) cascade amplifier with resistive feedback, gate inductive peaking, and source degeneration inductive topologies to realize the matching networks for broadband operation. The authors also derived the formula of the input and output impedances those help to select proper values of biasing and matching elements. The LNA achieves a peak gain S 21 of 11.61 dB, a noise figure (NF) of 5.28 to 5.82 dB at frequency from 0.6 to 6.2 GHz, and an input thirdintercept point (IIP3) of -2.55 dBm at 2.5 GHz under DC power of 8.45 mW from a 1.5 V supply voltage. The figure-of-merit (FOM) for wideband LNA is up to 0.51 at 2.5 GHz. The LNA is fabricated in tsmc TM 0.18-m RF CMOS technology with a chip area of 0.8 mm 2 .Index Terms -gate inductive peaking, resistive feedback, source degeneration inductive topologies, wideband LNA.

Ultra-wideband Reconfigurable Low-noise Amplifier Based on 5G Communication

“…The load network reconfigurable technology is based on the main circuit fixed, and the load network part is reasonably set up so that it can amplify for signals of different frequencies [5][6][7][8]. Multiple independent load networks are combined into an array, and the switching array is invoked to control the operating state of each load path to amplify for the desired frequency band in a specific mode.…”

Analysis and Design of a Wideband Low-Noise Amplifier with Bias and Parasitic Parameters Derived Wide Bandpass Matching Networks

“…In Equation (10), the transmission characteristic is mainly affected by the parasitic parameters L 1 -C 2 . It shows that the parasitic parameters begin to take effect at high frequencies and deteriorate the transmission performance of the network severely.…”

“…However, these indicators have a trade-off to each other, which brings challenges to the design of wideband LNAs. Technologies to achieve broad bandwidth with low noise simultaneously are extensively developed and studied [9][10][11][12][13][14]. In [9], a bandwidth-enhanced Darlington amplifier with shunt feedback is adopted to implement a broadband amplifier with flat gain.…”

“…In [9], a bandwidth-enhanced Darlington amplifier with shunt feedback is adopted to implement a broadband amplifier with flat gain. However, tensively developed and studied [9][10][11][12][13][14]. In [9], a bandwidth-enhanced Darlington amplifier with shunt feedback is adopted to implement a broadband amplifier with flat gain.…”

“…However, the NF could not be tolerated due to resistance networks at the Darlington structure. In [10], an LNA with a relative bandwidth of 165% is realized based on the cascade amplifier with resistive feedback. The CS with feedback can achieve a flat broadband bandwidth, but the noise caused by the resistance in feedback is unsatisfactory.…”