Large-signal characterization of an 870 MHz inverse class-F cross-coupled push-pull PA using active mixed-mode load-pull

An inverse class-F cross-coupled push-pull PA in a 0.5mum SiGe technology is presented. It is shown that inverse class-F in combination with C BC compensation is preferred over class-F operation in terms of gain roll-off and efficiency as function of collector supply voltage. The active mixed-mode l...

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Bibliographic Details
Main Authors: van der Heijden, M.P., Hartskeerl, D.M.H., Volokhine, I., Teppati, V., Ferrero, A.
Format: Conference Proceeding
Language:English
Subjects:
Germanium silicon alloys
Impedance
Laboratories
Power amplifiers
Power generation
Power system harmonics
Shape control
Silicon germanium
Transmitters
Voltage
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Summary:An inverse class-F cross-coupled push-pull PA in a 0.5mum SiGe technology is presented. It is shown that inverse class-F in combination with C BC compensation is preferred over class-F operation in terms of gain roll-off and efficiency as function of collector supply voltage. The active mixed-mode load-pull system is used to set up the proper output differential and common-mode impedances at the fundamental (870MHz) and harmonics to experimentally verify inverse class F operation with a measured PAE of 67% at 20dBm output power
ISSN:1529-2517
2375-0995
DOI:10.1109/RFIC.2006.1651173