Title :
Large-signal characterization of an 870 MHz inverse class-F cross-coupled push-pull PA using active mixed-mode load-pull
Author :
van der Heijden, M.P. ; Hartskeerl, D.M.H. ; Volokhine, I. ; Teppati, V. ; Ferrero, A.
Author_Institution :
Philips Res. Labs., Eindhoven
Abstract :
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 CBC 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
Keywords :
Ge-Si alloys; UHF power amplifiers; mixed analogue-digital integrated circuits; semiconductor device models; 0.5 micron; 870 MHz; SiGe; active harmonic load pull; active mixed-mode load-pull system; cross-coupled push-pull power amplifier; inverse class F operation; Germanium silicon alloys; Impedance; Laboratories; Power amplifiers; Power generation; Power system harmonics; Shape control; Silicon germanium; Transmitters; Voltage;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651173
