DocumentCode
15538
Title
Design of linearity and efficiency improved Doherty PA using microstrip resonant cell
Author
Lotfi, Ahmad ; Hayati, Mohsen
Author_Institution
Electr. Eng. Dept., K.N. Toosi Univ. of Technol., Tehran, Iran
Volume
50
Issue
22
fYear
2014
fDate
10 23 2014
Firstpage
1615
Lastpage
1616
Abstract
A Doherty power amplifier (DPA) using a novel front-coupled tapered microstrip resonant cell (TMRC) is proposed for linearity and efficiency improvement. The suppression of the second- and higher-order harmonics of the output of the main amplifier is achieved by incorporating the proposed TMRC. Moreover, the compensation of the phase delay and the impedance inversion are performed without any lumped element. The designed power amplifier has been simulated, and measurements of the fabricated power amplifier were made. The third-order inter-modulation distortion of the proposed DPA is reduced by 33 dB compared with the conventional ones.
Keywords
harmonics suppression; intermodulation distortion; power amplifiers; Doherty PA; Doherty power amplifier; TMRC; front-coupled tapered microstrip resonant cell; impedance inversion; intermodulation distortion; phase delay;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2014.2178
Filename
6937268
Link To Document