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Published in: Wireless Personal Communications 2/2022

02-06-2022

Investigating Concurrent-Mode Operation of Dual-Band Class-J/J Power Amplifiers: Analysis and Design Technique

Authors: Milad Shariatifar, Mohsen Jalali, Abdolali Abdipour

Published in: Wireless Personal Communications | Issue 2/2022

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Abstract

In this paper, concurrent-mode operation of dual-band PAs under simultaneous drive of two stimuli is investigated. It is shown that Class-J operation is well suited for this mode of operation as its concurrent-mode efficiency is less affected by the load reactance tuning accuracy at inter-modulation frequencies. This characteristic results in preserved efficiencies over wider bandwidths, and simplicity of intermodulation tuning network (IMTN) realization. It has been also shown that dual-band Class-J/J PA fully takes advantage of the transistor’s nonlinear output capacitance in case of simultaneously driven input by boosting the efficiency. A Class-J/J concurrent dual-band PA with IMTN is designed and implemented which operates over 1.842/2.655 GHz bands. About 40 dBm output power and efficiencies more than 70% at lower band and upper band are obtained according to the experimental results while the concurrent-mode efficiency is about 61.2%.
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Metadata
Title
Investigating Concurrent-Mode Operation of Dual-Band Class-J/J Power Amplifiers: Analysis and Design Technique
Authors
Milad Shariatifar
Mohsen Jalali
Abdolali Abdipour
Publication date
02-06-2022
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 2/2022
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-022-09798-5

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