Design of Concurrent Multiband Doherty Power Amplifiers for Wireless Applications

Author

Xuan Anh Nghiem ; Junqing Guan ; Hone, Thomas ; Negra, Renato

Author_Institution

Ultra High Speed Mobile Inf. & Commun. (UMIC) Res. Center, RWTH Aachen Univ., Aachen, Germany

Volume

61

Issue

12

fYear

2013

fDate

Dec. 2013

Firstpage

4559

Lastpage

4568

Abstract

This paper presents the design of concurrent multiband Doherty power amplifiers (MB-DPA) based on a newly developed multiband impedance inverter network (MB-IIN). The design concept can theoretically be applied to a large number of frequency bands. To support the design of MB-DPAs, a detailed realization of the MB-IIN is introduced for the first time. For verifying the proposed MB-IIN design technique, tri-band and quad-band DPAs for 950, 1500, 2140, and 2650 MHz are designed, implemented, and characterized. Measurement results show good performance in terms of efficiency, linearity, and especially the pronounced Doherty behavior in all targeted bands, demonstrating the prospective applications of the developed MB-IIN in the design of concurrent multiband Doherty power amplifiers for wireless communications.

Keywords

power amplifiers; wireless channels; MB-DPA; MB-IIN design technique; concurrent multiband Doherty power amplifier; frequency 1500 MHz; frequency 2140 MHz; frequency 2650 MHz; frequency 950 MHz; multiband impedance inverter network; quad-band DPA; tri-band DPA; wireless communication; Broadband communication; Impedance; Impedance matching; Inverters; Linearity; Transforms; Wireless communication; Concurrent; Doherty; HEMTs; gallium–nitride (GaN); multiband; power amplifiers (PAs);

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2013.2281959

Filename

6606918