Class-E Power Amplifier with Improved PAE Bandwidth Using Double CRLH TL Stub for Harmonic Tuning
Class-E Power Amplifier with Improved PAE Bandwidth Using Double CRLH TL Stub for Harmonic Tuning
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DOI：
10.1587/transele.2022mmi0002
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
S. Tanaka;Hirotaka Asami;Takahiro Suzuki
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文献类型：
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作者：
S. Tanaka;Hirotaka Asami;Takahiro Suzuki
本文提出了一种基于复合左右手传输线(CRLHTL)的E类功率放大器fier(PA)，它带有一种新型的谐波调谐电路。传统的Harmon调谐功率放大器的问题之一是有限的PAE带宽。模拟结果表明，与F类放大器fi相比，E类放大器fi具有在更宽的频率范围内保持较高PAE的潜力。为了充分利用具有优良特性的E类fi放大器，提出了一种采用双CRLHTL短桩结构的高温超导电路。HTC不仅结构紧凑，而且还增强了E类放大器fier固有的宽工作频率范围。采用该器件制作的2 GHz 6W GaN-HEMT E类功率放大器，其功率放大器带宽(≥65%)为380 MHz，最大漏极ffi效率为78.5%，功率效率为74.0%。
SUMMARY This paper presents a class-E power amplifier (PA) with a novel harmonic tuning circuit (HTC) based on composite right- / left-handed transmission lines (CRLH TLs). One of the issues of conventional harmon- ically tuned PAs is the limited PAE bandwidth. It is shown by simulation that class-E amplifiers have potential of maintaining high PAE over a wider frequency range than for example class-F amplifiers. To make full use of class-E amplifiers with the superior characteristics, an HTC using double CRLH TL stub structure is proposed. The HTC is not only compact but also enhances the inherently wide operation frequency range of class-E amplifier. A 2-GHz 6W GaN-HEMT class-E PA using the proposed HTC demonstrated a PAE bandwidth ( ≥ 65%) of 380MHz with maximum drain e ffi ciency and PAE of 78.5% and 74.0%, respectively .