一种基于锥形线阻抗逆变器的多赫蒂功率放大器

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI:10.1109/SSD.2014.6808763

Mehran Yahyavi, E. Bertran

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引用次数: 2

摘要

本文提出了一种2.6 GHz频段的宽带GaN Doherty功率放大器(DPA)，采用3级威尔金森分路器，其中阻抗逆变器基于锥形线而不是四分之一波变压器。通过与使用典型四分之一波变压器作为阻抗逆变器的相同放大器进行比较，并保持两种设计相同的带宽(1.6至3.3 GHz，分数带宽的65%)，在带锥形线的DPA中，功率附加效率(PAE)提高了50%(在输入功率为35 dBm时从40.46%提高到61.17%)。此外，换能器增益几乎保持不变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Doherty power amplifier based on a tapered line impedance inverter

This paper presents a wideband GaN Doherty power amplifier (DPA) in the 2.6 GHz band with a 3 stages Wilkinson splitter where the impedance inverter is based on a tapered line instead of a quarter wave transformer. From the comparison with the same amplifier using a typical quarter-wave transformer as impedance inverter, and keeping both designs the same bandwidth (1.6 to 3.3 GHz, 65% of the fractional bandwidth), the Power Added Efficiency (PAE) is enhanced up to 50% (from 40.46% to 61.17% at 35 dBm input power) in the DPA with a tapered line. Besides, the transducer gain remains practically unaltered.

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2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14)

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