Talks and Poster Presentations (with Proceedings-Entry):
Ch. Schuberth, P. Singerl, H. Arthaber, M. Gadringer, G. Magerl:
"Design of a Current Mode Class-D RF Amplifier Using Load Pull Techniques";
Poster: IEEE MTT-S International Microwave Symposium,
Boston, MA, USA;
06-07-2009
- 06-12-2009; in: "2009 International Microwave Symposium",
(2009),
ISBN: 978-1-4244-2804-5;
1521
- 1524.
English abstract:
This work presents the design of a current mode class-D (CMCD) amplifier using a measurement based approach. Because the CMCD amplifier is in fact a push-pull version of the inverted class-F amplifier the optimum load impedances for an inverted class-F singel-ended operated LDMOS FETs have been determinded using an active harmonic load-pull setup. The correct time domain waveforms for an inverted class-F amplifier were verified by measurements and simulations. Based on the harmonic load-pull measurements an experimental current mode class-D amplifier with 61.5% power-added efficiency (PAE) at 25W output is demonstrated using LDMOS FETs at 900 MHz.
Keywords:
current mode class-D amplifier, high efficiency, LDMOS, microwave measurements, microwave power amplifiers, switching amplifiers
Created from the Publication Database of the Vienna University of Technology.