Open Access System for Information Sharing

Login Library

 

Article
Cited 19 time in webofscience Cited 20 time in scopus
Metadata Downloads

Broadband Saturated Power Amplifier With Harmonic Control Circuits SCIE SCOPUS

Title
Broadband Saturated Power Amplifier With Harmonic Control Circuits
Authors
Junghwan SonYunsik ParkIldu KimJunghwan MoonKim, B
Date Issued
2014-03
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Abstract
This letter presents a broadband saturated power amplifier (PA) using the harmonic control circuits for base station application. The saturated PA has advantages for broadband operation with high efficiency due to the large tolerance of the second harmonic tuning. However, it is difficult to simultaneously achieve the fundamental and second harmonic impedance matching across a wide bandwidth. To solve the problem, the harmonic control circuits are placed at the input and output of the device's die. These harmonic control circuits play a role of leading the second harmonic impedances to the optimum regions but are specially designed to be insensitive to the following fundamental matching circuit. The saturated PA with the harmonic control circuit is designed using a 120 W GaN device, achieving a high efficiency and wide bandwidth characteristics simultaneously. The measured output power, drain efficiency, and gain are at least 51.0 dBm, 71.0%, and 8.22 dB at the saturation across the 1.75 to 2.17 GHz (21% relative bandwidth) under pulse test (10% duty). This saturated PA also delivers good performances for long term evolution (LTE) and wideband code division multiple access (WCDMA) modulated signals at 1.85 and 2.14 GHz, respectively. These results show that the broadband saturated PA with the harmonic control circuit is suitable to wide bandwidth multimode/multiband applications.
URI
https://oasis.postech.ac.kr/handle/2014.oak/14237
DOI
10.1109/LMWC.2013.2292925
ISSN
1531-1309
Article Type
Article
Citation
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, vol. 24, no. 3, page. 185 - 187, 2014-03
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

김범만KIM, BUM MAN
Dept of Electrical Enginrg
Read more

Views & Downloads

Browse