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

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...

Full description

Saved in:
Bibliographic Details
Published in:Wireless personal communications 2022-09, Vol.126 (2), p.1431-1442
Main Authors: Shariatifar, Milad, Jalali, Mohsen, Abdipour, Abdolali
Format: Article
Language:English
Subjects:
Amplifier design
Communications Engineering
Computer Communication Networks
Efficiency
Engineering
Intermodulation
Networks
Power amplifiers
Reactance
Signal,Image and Speech Processing
Transistors
Tuning
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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%.
ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-022-09798-5