Circulator Load Modulated Amplifier: A Non-Reciprocal Wideband and Efficient PA Architecture
Paper i proceeding, 2021

A novel power amplifier (PA) architecure, the Circulator Load Modulated Amplifier (CLMA), is presented and demonstrated. Based on a 3-port non-reciprocal combiner, the CLMA is able to modulate the load of a class-B amplifier by means of controlling the amplitude and phase of a class-C amplifier. The architecture enables broadband highly-efficient operation over a reconfigurable output power control range. As a proof of concept, a narrowband prototype PA based on GaN transistors and a commercial circulator is employed to validate the CLMA concept. It exhibits peak output power of 43.1 dBm and drain efficiency of 73% at 6-dB output power control range at a center frequency of 2.09 GHz.

GaN

energy efficiency

non-reciprocal

load modulation

circulator

power amplifier

wideband

Författare

Han Zhou

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

Jose-Ramon Perez-Cisneros

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

Vol. 2021-June 603-605

IEEE MTT-S International Microwave Symposium Digest
Atlanta, USA,

Ämneskategorier

Telekommunikation

DOI

10.1109/IMS19712.2021.9574960

Mer information

Senast uppdaterat

2021-11-17