A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK
This paper shows the design and simulation results of a hybrid Doherty power amplifier. The amplifier has been designed at 2,4 GHz, obtaining power-added efficiency above 70 % for 6 dB output power back-off, together with a small signal gain of 17 dB. Design and analysis equations are presented cons...
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doaj-efbf8d44fda3467d8fec407a4cf276cf2020-11-24T22:33:41ZengUniversidad de la CostaInge-Cuc0122-65172382-47002015-01-01111485210.17981/ingecuc.11.1.2015.04A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAKJorge Moreno Rubio0Edison Angarita Malaver 1Herman Fernández González 2Universidad Pedagógica y Tecnológica de ColombiaUniversidad Pedagógica y Tecnológica de ColombiaUniversidad Pedagógica y Tecnológica de ColombiaThis paper shows the design and simulation results of a hybrid Doherty power amplifier. The amplifier has been designed at 2,4 GHz, obtaining power-added efficiency above 70 % for 6 dB output power back-off, together with a small signal gain of 17 dB. Design and analysis equations are presented considering class AB bias conditions for the main amplifier and class C for the peak one in back-off larger than 6 dB, and FET device assumption. An additional control on the bias point of the peak device has been carried out, in order to increase the gain on the Doherty region and ease the design of the peak branch. A Cree’s GaN-HEMT CGH40010F device has been used with a nonlinear model guarantied up to 6 GHz and with an expected output power of 10 W. The obtained output power is higher than 25-W. The simulation has been carried out using Agilent ADS CAD tools. The present design could present the state of the art in terms of continuous-wave (CW) characterization http://revistascientificas.cuc.edu.co/index.php/ingecuc/article/view/384Power AmplifierHigh EfficiencyGaN DevicesDohertyMicrowave Circuits |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jorge Moreno Rubio Edison Angarita Malaver Herman Fernández González |
spellingShingle |
Jorge Moreno Rubio Edison Angarita Malaver Herman Fernández González A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK Inge-Cuc Power Amplifier High Efficiency GaN Devices Doherty Microwave Circuits |
author_facet |
Jorge Moreno Rubio Edison Angarita Malaver Herman Fernández González |
author_sort |
Jorge Moreno Rubio |
title |
A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK |
title_short |
A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK |
title_full |
A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK |
title_fullStr |
A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK |
title_full_unstemmed |
A 25 W 70% Efficiency Doherty Power Amplifier at 6 dB Output Back-Off for 2.4 GHz Applications with VGS, PEAK |
title_sort |
25 w 70% efficiency doherty power amplifier at 6 db output back-off for 2.4 ghz applications with vgs, peak |
publisher |
Universidad de la Costa |
series |
Inge-Cuc |
issn |
0122-6517 2382-4700 |
publishDate |
2015-01-01 |
description |
This paper shows the design and simulation results of a hybrid Doherty power amplifier. The amplifier has been designed at 2,4 GHz, obtaining power-added efficiency above 70 % for 6 dB output power back-off, together with a small signal gain of 17 dB. Design and analysis equations are presented considering class AB bias conditions for the main amplifier and class C for the peak one in back-off larger than 6 dB, and FET device assumption. An additional control on the bias point of the peak device has been carried out, in order to increase the gain on the Doherty region and ease the design of the peak branch. A Cree’s GaN-HEMT CGH40010F device has been used with a nonlinear model guarantied up to 6 GHz and with an expected output power of 10 W. The obtained output power is higher than 25-W. The simulation has been carried out using Agilent ADS CAD tools. The present design could present the state of the art in terms of continuous-wave (CW) characterization
|
topic |
Power Amplifier High Efficiency GaN Devices Doherty Microwave Circuits |
url |
http://revistascientificas.cuc.edu.co/index.php/ingecuc/article/view/384 |
work_keys_str_mv |
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