Wideband Sequential Circulator Load Modulated Amplifier with Back-off Efficiency Enhancement
Paper i proceeding, 2022

This paper demonstrates a novel power amplifier (PA) architecture; the sequential circulator load modulated amplifier (SCLMA). The sequential configuration resulted in excellent bandwidth and extended back-off efficiency enhancement, making it suitable for modern communication scenarios with large peak-to-average-power-ratio (PAPR) signals. A wideband prototype PA based on GaN transistors and a commercial off-the-shelf circulator is employed to validate the SCLMA concept. The experimental results exhibit a drain efficiency of 55-68 % at the peak output power and 46-53 %
at 8-dB output power back-off across 2.0-3.0 GHz. Combined with the measured peak output power of 42.7±0.7 dBm in the same range, make it a promising candidate for use in modern energy-efficient wireless communication transmitters.

power amplifier (PA)

energy efficiency

sequential operation

Circulator

load modulation

gallium nitride (GaN)

non-reciprocal

wideband

Författare

Han Zhou

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Jose-Ramon Perez-Cisneros

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

2022 52nd European Microwave Conference, EuMC 2022

214-217
9782874870699 (ISBN)

IEEE European Microwave Conference, EuMC 2022
Milan, Italy,

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Annan elektroteknik och elektronik

DOI

10.23919/EuMC54642.2022.9924268

Mer information

Senast uppdaterat

2024-01-03