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A Broadband and High-Efficiency Push-Pull Power Amplifier with Dual-Input and Planar Output Balun

: Zang, C.; Auer, F.; Kamper, M.


Verband Deutscher Elektrotechniker e.V. -VDE-, Berlin; Institut für Mikrowellen- und Antennentechnik e.V. -IMA-:
German Microwave Conference, GeMiC 2019 : 25-27 March 2019, Stuttgart, Germany
Stuttgart, 2019
ISBN: 978-3-9812668-9-4
German Microwave Conference (GeMiC) <12, 2019, Stuttgart>
Conference Paper
Fraunhofer IIS ()

A broadband push-pull RF power amplifier (PA) is designed and implemented. The PA yields high efficiency from 0.8 to 3.7 GHz with a peak drain efficiency of 68 % at 1.6 GHz. The output power is greater or equal to 40 dBm over the entire band with a minimum power gain of 10 dB. Two 6 W packaged GaN devices are used to design the PA. The PA features individual RF inputs to optimize peak and backoff efficiency; phase shift between the inputs and its influence on the overall performance is investigated through simulation and measurement. A planar balun is used at the output. No additional output matching is utilized.