An Active Load-Pull Technique to Emulate Outphasing Power Amplifiers
Paper in proceeding, 2021

A general measurement-based design methodology for outphasing transmitter architectures is presented. The emulation technique allows to predict the full real world performance of the outphasing scheme without requiring to fabricate the complete power amplifier (PA). Simply, iterative active load-pull measurements of a single branch PA together with the Sparameters of the output combiner are needed. The method determines the authentic dynamic loading condition of both branch PAs by revealing the internal interactions between the nonlinear active devices. Thereby, the insight into the dynamics of load modulation during the outphasing operation provided by the technique, allows PA designers to optimize circuit performance. The design methodology is demonstrated by emulating an outphasing scheme at 2.14 GHz operated in pure-and mixed-mode.

power amplifier (PA)

outphasing

measurement technique

emulation

load modulation

Active load-pull

Author

Jose-Ramon Perez-Cisneros

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

William Hallberg

Qamcom Research & Technology

Koen Buisman

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

University of Surrey

2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021

24-27 9375536

2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021
Virtual, San Diego, USA,

Subject Categories

Telecommunications

Aerospace Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/PAWR51852.2021.9375536

More information

Latest update

5/5/2021 2