In Situ Waveform Measurements Within Doherty Power Amplifier Under Operational Conditions
- verfasst von
- Steffen Probst, Eckhard Denicke, Bernd Geck
- Abstract
In this contribution, a gallium nitride-based 1 GHz Doherty amplifier with in situ waveform measurement capability is presented. With this measurement approach, the high frequency time-domain voltages and currents can be measured directly within the circuit. Therefore, directional couplers are integrated into the output matching network of the carrier and the peak amplifier. In contrast to other measurement techniques for investigating amplifiers under laboratory conditions, with this approach, a more in-depth investigation of realized power amplifiers can be carried out under operational conditions, e.g., for tuning. Especially, it is possible to characterize the interaction of the carrier and the peak amplifier. Hence, to the best knowledge of the authors the load modulation of a Doherty amplifier at the fundamental and the higher harmonics is measured for the first time.
- Organisationseinheit(en)
-
Laboratorium f. Informationstechnologie
Institut für Hochfrequenztechnik und Funksysteme
- Typ
- Artikel
- Journal
- IEEE Transactions on Microwave Theory and Techniques
- Band
- 65
- Seiten
- 2192-2200
- Anzahl der Seiten
- 9
- ISSN
- 0018-9480
- Publikationsdatum
- 06.2017
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Strahlung, Physik der kondensierten Materie, Elektrotechnik und Elektronik
- Elektronische Version(en)
-
https://doi.org/10.1109/TMTT.2017.2651809 (Zugang:
Geschlossen)
