Temperature-dependent Characterization of Power Amplifiers Using an Efficient Electrothermal Analysis Technique
Artikel i vetenskaplig tidskrift, 2022

In this paper, we propose an efficient methodology for the electrothermal characterization of power amplifier (PA) integrated circuits. The proposed electrothermal analysis method predicts the effect of temperature variations on the key performances of PAs, such as gain and linearity, under realistic dynamic operating conditions. A comprehensive technique for identifying an equivalent compact thermal model, using data from 3-D finite element method thermal simulation and nonlinear curve fitting algorithms, is described. Two efficient methods for electrothermal analysis applying the developed compact thermal model are reported. The validity of the methods is evaluated using commercially available electrothermal computer-aided design (CAD) tools and through extensive pulsed RF signal measurements of a PA device under test. The measurement results confirm the validity of the proposed electrothermal analysis methods. The proposed methods show significantly faster simulation speed comparing to available CAD tools for electrothermal analysis. Moreover, the results reveal the importance of electrothermal characterization in the prediction of the temperature-aware PA dynamic operation.

power amplifier linearity

Electrothermal characterization

thermal impedance identification


thermal network extraction

thermal modeling

heat dissipation


Parastoo Taghikhani

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Koen Buisman

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

martin Versleijen

NXP Semiconductors Netherlands

Jose-Ramon Perez-Cisneros

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

IEEE Transactions on Microwave Theory and Techniques

0018-9480 (ISSN) 15579670 (eISSN)

Vol. 70 2 1349-1360

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Europeiska kommissionen (EU) (EC/H2020/721732), 2016-09-01 -- 2020-08-31.

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Europeiska kommissionen (EU) (EC/H2020/779305), 2018-01-01 -- 2020-12-31.


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