A highly efficient concurrent dual‐band GaN class‐AB power amplifier at 1.84 GHz and 3.5 GHz

This article presents the design, simulation, implementation, and experimental results of a highly efficient, concurrent dual‐band, gallium nitride (GaN), class‐AB power amplifier (PA) at two frequencies: 1.84 and 3.5 GHz. It proposes a novel dual‐band bandpass filter (DBBPF) with quad‐section stepp...

Full description

Saved in:
Bibliographic Details
Published inInternational journal of RF and microwave computer-aided engineering Vol. 27; no. 9; pp. e21148 - n/a
Main Authors Rezaei Borjlu, Shaban, Asemani, Davud, Dousti, Massoud
Format Journal Article
LanguageEnglish
Published Hoboken Hindawi Limited 01.11.2017
Subjects
bandpass filter
Bandpass filters
Cellular communication
class‐AB
concurrent
Continuous radiation
dual‐band
Frequencies
gallium nitride
Gallium nitrides
Interoperability
power amplifier
Power efficiency
Quadrature amplitude modulation
Resonators
Stepped
stepped impedance resonators
Wireless communications
Online AccessGet full text

Cover

More Information
Summary:This article presents the design, simulation, implementation, and experimental results of a highly efficient, concurrent dual‐band, gallium nitride (GaN), class‐AB power amplifier (PA) at two frequencies: 1.84 and 3.5 GHz. It proposes a novel dual‐band bandpass filter (DBBPF) with quad‐section stepped‐impedance resonators (SIRs) capable of rejecting the annoying frequencies of the second and third harmonics in the dual‐band. The proposed DBBPF was applied in the design of a dual‐band PA using a packaged 10 W GaN transistor. The PA prototype maintained a peak power‐added efficiency (PAE) of 75.3% at the 1.84 GHz frequency and 64.5% at the 3.5 GHz frequency. For a continuous wave output power of 40.9 dBm, the measured gain was 13 dB in the two frequency bands. Linearized modulated measurements, concurrently using 10 MHz quadrature amplitude modulation (16 QAM) signals and worldwide interoperability for microwave access (WiMAX) signals, showed an average PAE of 48.5% and 39.8% and an adjacent channel leakage ratio of −46 and −45 dBc with an average output power of 37.8 and 36.8 dBm at the two frequency bands, respectively. This PA is used for wireless systems. It is especially useful in standard simultaneous global system for mobile (GSM) and WiMAX wireless systems.
ISSN:1096-4290
1099-047X
DOI:10.1002/mmce.21148