Design and Validation of a Concurrent Dual-Band 1.84/2.65 GHz GaN Doherty Power Amplifier
Paper i proceeding, 2023

This paper introduces a dual-band Do-herty power amplifier (DB-DPA), using symmetrical GaN HEMT devices. The load modulation network incorporates a wideband Doherty combiner followed by a Chebyshev transformer as a post-matching network. The operating frequencies of the proposed DB-DPA are 1.84 and 2.65 GHz with a bandwidth of 70 MHz in each band. The DB-DPA showcases satisfactory performance with a peak output power of 47.4 dBm for 1.84 GHz and 47.1 dBm for 2.65 GHz. Furthermore, a drain efficiency of 50.4-64.5% and 44.4-64.4% is measured between 6-dB output back-off (OBO) level to peak power level, respectively, for 1.84 GHz and 2.65 GHz bands. Concurrent dual-band performance of the proposed DB-DPA is demonstrated using 20-MHz signals with a peak-to-average power ratio of 6 dB. For an average output power of 40 dBm, the DB-DPA yields 46.4% efficiency with an adjacent channel leakage ratio (ACLR) better than -51 dBc.

Dual-Band

Energy Efficiency

Concurrent operation

Doherty Power Amplifier

Författare

Jamal Ur Rasool Haider

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium

Han Zhou

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Paul Saad

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Rui Hou

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap, Mikrovågselektronik

2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC)

2689-5498 (eISSN)


979-8-3503-2242-2 (ISBN)

2023 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC)
Aveiro, Portugal,

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DOI

10.1109/INMMIC57329.2023.10321780

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Senast uppdaterat

2024-05-01