Compensation of Performance Degradation due to Thermal Effects in GaN LNA Using Dynamic Bias
Paper i proceeding, 2018

This paper investigates the possibilities of using a dynamic bias control scheme for a low noise amplifier to compensate for performance degradation due to thermal effects. The study was performed by characterization of bias voltage and temperature dependence between -25°C to 75°C of a GaN MMIC LNA. The performance, in terms of gain, linearity and noise, degraded, at elevated chip temperatures. Nonlinear behavioral models were developed and used to predict performance for different bias and temperature conditions. Bias conditions to achieve constant gain and noise figure versus temperature are determined. Enhanced RF performance, with improved gain and linearity is demonstrated and is shown to require increased power and involves a trade-off between improving noise figure and gain.

modeling

gain control

dynamic bias

low noise amplifier

thermal effects

Författare

Johan Bremer

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

Lowisa Hanning

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

Niklas Rorsman

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

Mattias Thorsell

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

EuMIC 2018 - 2018 13th European Microwave Integrated Circuits Conference

245-248 8539890

13th European Microwave Integrated Circuits Conference, EuMIC 2018
Madrid, Spain,

Ämneskategorier

Annan fysik

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.23919/EuMIC.2018.8539890

Mer information

Senast uppdaterat

2019-01-24