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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Ultrahigh-efficiency power amplifier for space radar applications
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Ultrahigh-efficiency power amplifier for space radar applications

机译:适用于太空雷达应用的超高效功率放大器

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This paper describes a broad-band switch mode power amplifier based on the indium phosphide (InP) double heterojunction bipolar transistor (DHBT) technology. The amplifier combines the alternative Class-E mode of operation with a harmonic termination technique that minimizes the insertion loss of matching circuitry to obtain ultrahigh-efficiency operation at X-band. For broad-band Class-E performance, the amplifiers output network employs a transmission line topology to achieve broad-band harmonic terminations while providing the optimal fundamental impedance to shape the output current and voltage waveforms of the device for maximum efficiency performance. As a result, 65% power-added efficiency (PAE) was achieved at 10 GHz. Over the frequency band of 9-11 GHz, the power amplifier achieved 49%-65% PAE, 18-22 dBm of output power, and 8-11 dB gain at 4 V supply. The reported power amplifier achieved what is believed to be the best PAE performance at 10 GHz and the widest bandwidth for a switch-mode design at X-band.
机译:本文介绍了一种基于磷化铟(InP)双异质结双极晶体管(DHBT)技术的宽带开关模式功率放大器。该放大器将替代的E类工作模式与谐波终端技术相结合,该技术可将匹配电路的插入损耗降至最低,从而在X波段获得超高效率的工作。为了实现宽带E类性能,放大器输出网络采用传输线拓扑结构来实现宽带谐波终端,同时提供最佳的基本阻抗来对器件的输出电流和电压波形进行整形以获得最大效率。结果,在10 GHz时达到了65%的功率附加效率(PAE)。在9-11 GHz频带上,功率放大器在4 V电源下达到49%-65%的PAE,18-22 dBm的输出功率和8-11 dB的增益。据报道,功率放大器在10 GHz时达到了最佳的PAE性能,在X波段实现了开关模式设计的最宽带宽。

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