Analysis of Highly Efficient Broadband Push–Pull Class-E Power Amplifier

IF 1.8 3区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Heng Lu, Jianliang Jiang, Hengli Zhang
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Abstract

Switching-mode power amplifiers have provided unprecedented opportunities for modern wireless communication technology. However, its single-ended structure suffers from significant harmonic interferences on signal transmission; in some cases, higher return loss caused by the impedance mismatch may damage or even destroy the device directly. Here it shows, analytically and experimentally, a broadband push–pull parallel-circuit (PC) Class-E power amplifier (PA) which can present high efficiency and flatness gain over a wide frequency range. Based on the broadband capability of the proposed structure, a highly-efficient push–pull PC Class-E PA combining single reactance compensation technique and Chebyshev low-pass impedance matching network (MN) is designed and fabricated. Experimental results demonstrated that a drain efficiency of 93.71–94.62% operating from 7.0 to 9.4 MHz, as well as output power (Pout) of 42.1–44.57 dBm and power gain of 14.1–16.57 dB are obtained. The measurement results show good agreements with the simulation results, which may be a potential candidate for electronic article surveillance (EAS) applications operating in the high-frequency band.

Abstract Image

高效宽带推挽式 E 类功率放大器分析
开关模式功率放大器为现代无线通信技术提供了前所未有的机遇。然而,其单端结构在信号传输过程中存在明显的谐波干扰;在某些情况下,阻抗失配造成的较高回波损耗可能会直接损坏甚至毁坏器件。本文通过分析和实验展示了一种宽带推挽并联电路(PC)E 类功率放大器(PA),它能在很宽的频率范围内实现高效率和平坦增益。基于所提结构的宽带能力,设计并制造了一种结合了单电抗补偿技术和切比雪夫低通阻抗匹配网络(MN)的高效推挽式 PC E 类功率放大器。实验结果表明,该器件在 7.0 至 9.4 MHz 频率范围内的漏极效率为 93.71%-94.62%,输出功率(Pout)为 42.1-44.57 dBm,功率增益为 14.1-16.57 dB。测量结果与仿真结果显示出良好的一致性,这可能是在高频段工作的电子物品监视(EAS)应用的潜在候选产品。
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来源期刊
Circuits, Systems and Signal Processing
Circuits, Systems and Signal Processing 工程技术-工程:电子与电气
CiteScore
4.80
自引率
13.00%
发文量
321
审稿时长
4.6 months
期刊介绍: Rapid developments in the analog and digital processing of signals for communication, control, and computer systems have made the theory of electrical circuits and signal processing a burgeoning area of research and design. The aim of Circuits, Systems, and Signal Processing (CSSP) is to help meet the needs of outlets for significant research papers and state-of-the-art review articles in the area. The scope of the journal is broad, ranging from mathematical foundations to practical engineering design. It encompasses, but is not limited to, such topics as linear and nonlinear networks, distributed circuits and systems, multi-dimensional signals and systems, analog filters and signal processing, digital filters and signal processing, statistical signal processing, multimedia, computer aided design, graph theory, neural systems, communication circuits and systems, and VLSI signal processing. The Editorial Board is international, and papers are welcome from throughout the world. The journal is devoted primarily to research papers, but survey, expository, and tutorial papers are also published. Circuits, Systems, and Signal Processing (CSSP) is published twelve times annually.
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