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The Resistive-Reactive Class-J Power Amplifier Mode
Publikationstyp
Journal Article
Date Issued
2015-10
Sprache
English
Author(s)
Institut
TORE-URI
Volume
25
Issue
10
Start Page
666
End Page
668
Article Number
7185478
Citation
IEEE Microwave and Wireless Components Letters 10 (25): 7185478 (2015-10)
Publisher DOI
Scopus ID
This letter introduces a theory which considers the effect of lossy second-harmonic terminations on the voltage waveform, output power, and efficiency of power amplifiers (PAs) operated in the class-J mode. To this end, the conventional (reactive) class-J mode is extended to a resistive-reactive class-J mode with complex fundamental and second-harmonic load impedances. The theory is experimentally validated by performing on-wafer active load-pull measurements on an AlGaN/GaN HEMT power device with 0.25μ gate length and a total gate periphery of 6x200μ. The measured waveforms are de-embedded to the internal current-generator of the device, where they exhibit the theoretically predicted behavior.
Subjects
Class-J
losses
power amplifiers (PAs)