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

2017 ◽  
Vol 27 (9) ◽  
pp. e21148 ◽  
Author(s):  
Shaban Rezaei Borjlu ◽  
Davud Asemani ◽  
Massoud Dousti
Keyword(s):  
Power Amplifier ◽  
Dual Band ◽  
Class Ab ◽  
Highly Efficient

Realization of a 30-W highly efficient and linear reconfigurable dual-band power amplifier using the continuous mode approach

2013 ◽  
Vol 6 (2) ◽  
pp. 115-128 ◽  
Author(s):  
Vincenzo Carrubba ◽  
Stephan Maroldt ◽  
Markus Mußer ◽  
Herbert Walcher ◽  
Friedbert Van Raay ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Continuous Wave ◽  
Second Harmonic ◽  
Power Level ◽  
Dual Band ◽  
Power Efficient ◽  
Frequency Bands ◽  
Class Ab ◽  
Output Performance ◽  
Band Power

This paper presents the design methodology and the realization of a highly linear and power-efficient reconfigurable dual-band amplifier based on the continuous/Class-ABJ approach. The Class-ABJ theory allows presenting different reactive solutions on both fundamental and second harmonic terminations compared with the standard Class-AB mode. Despite the various terminations, a constant optimum output performance in terms of power, gain, and efficiency can still be achieved. The output impedances are then translated into frequency thus allowing the realization of broadbandpower amplifiers(PAs) at high-power level of 30 W. In this work, the Class-ABJ broadband approach will be used for the realization of a reconfigurable dual-band power amplifier operating in the two frequency bands 2.1–2.2 and 2.5–2.6 GHz. Continuous wave (CW) measurements on the realized PA show power and efficiency greater than 17 W and 55% in the two frequency bands with peak values up to 30 W and 63.7%. Indeed, it is shown that such novel modes can be predistorted and therefore the linearity requirement can also be met.

A Highly Efficient and Linear Class-AB/F Power Amplifier for Multimode Operation

2008 ◽  
Vol 56 (1) ◽  
pp. 77-87 ◽  
Author(s):  
Daehyun Kang ◽  
Daekyu Yu ◽  
Kyoungjoon Min ◽  
Kichon Han ◽  
Jinsung Choi ◽  
...  
Keyword(s):  
Power Amplifier ◽  
Class Ab ◽  
Highly Efficient ◽  
Multimode Operation
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