Emulation of Doherty Amplifiers Using Single- Amplifier Load-Pull Measurements
Artikel i vetenskaplig tidskrift, 2020

A measurement-based approach for the analysis of Doherty power amplifiers (DPAs) is presented. The DPA behavior is emulated using an active load-pull setup, exciting a single device under test (DUT) in either of two states, corresponding to the main and auxiliary branches in a DPA. The dynamic loading condition in one state is determined from the Doherty combiner parameters and the knowledge of the DUT behavior in the other state. By iterating between these states, the measurements converge to the true behavior of a complete DPA. This method provides measurement-based insights in the dynamic loading conditions and the corresponding individual device performance without having to manufacture the full DPA. The method is demonstrated by emulating and cross-verifying a 2.14-GHz DPA.

emulation

measurement technique

Active load-pull

Doherty power amplifier (DPA)

Författare

William Hallberg

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Dhecha Nopchinda

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik, Mikrovågselektronik

Koen Buisman

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

IEEE Microwave and Wireless Components Letters

1531-1309 (ISSN)

Vol. 30 1 47-49 8933328

Ämneskategorier

Teknisk mekanik

Medicinsk apparatteknik

Annan elektroteknik och elektronik

DOI

10.1109/LMWC.2019.2955065

Mer information

Senast uppdaterat

2020-02-04