A planner Doherty power amplifier with harmonic suppression with open and short ended stubs-Reference-Cited by-同舟云学术

A planner Doherty power amplifier with harmonic suppression with open and short ended stubs

Published:2021-06-10 Issue:0 Volume:0 Page:
ISSN:2191-6349
Container-title:Frequenz
language:en
Short-container-title:

Author:

Lotfi Saeedeh¹,Roshani Saeed¹,Roshani Sobhan¹,Shirzadian Gilan Maryam¹

Affiliation:

1. Department of Electrical Engineering , Kermanshah Branch, Islamic Azad University , Kermanshah , Iran

Abstract

Abstract This paper presents a new Doherty power amplifier (DPA) with harmonics suppression. A Wilkinson power divider (WPD) with open-ended and short-ended stubs is designed to suppress unwanted signals. To design the power divider in the circuit of the DPA, even and odd mode analyses are utilized. The proposed design operates at range of 1.2–1.6 GHz. The linearity of the suggested DPA is increased about 6 dBm, in comparison with the main amplifier. The designed Doherty amplifier has a power added efficiency (PAE), drain efficiency (DE) and Gain about 60, 61% and 19 dB, respectively. The designed WPD suppresses 2nd up to 14th harmonics with more than 20 dB suppression level, which is useful for suppressing unwanted harmonics in DPA design. ATF-34143 transistors (pHEMT technology) are used for this DPA amplifier design. The main amplifier has class-F topology and class-F inverse topology is used for auxiliary amplifier.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering

Link

https://www.degruyter.com/document/doi/10.1515/freq-2021-0109/pdf

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