A 60MHz Bandwidth High Efficiency X-Band Envelope Tracking Power Amplifier

2013 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS) Pub Date : 2013-11-11 DOI:10.1109/CSICS.2013.6659194

P. Theilmann, Jonmei J. Yan, Cuong Vu, J. Moon, H. Moyer, D. Kimball

引用次数: 19

Abstract

This paper presents a high efficiency X-band envelope-tracking power amplifier (PA) that achieves a 60MHz modulation bandwidth. The system consists of a wideband envelope modulator and a single-chip gallium- nitride (GaN) MMIC X-band PA. The envelope modulator achieves >70% efficiency while delivering >7W into an 8Ω resistive load for a 60MHz LTE-A modulated signal with a 6.6dB PAPR. The envelope tracking system attains a PAE of 35.3% (including the power dissipation of the envelope modulator) with 1.1W of average output power at 9.23GHz using a 20MHz LTE signal. The X-band PA itself was measured to achieve a drain efficiency of 81.6% with a gain of 7.6dB under these conditions.

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60MHz带宽高效率x波段包络跟踪功率放大器

本文提出了一种实现60MHz调制带宽的高效率x波段包络跟踪功率放大器(PA)。该系统由一个宽带包络调制器和一个单片氮化镓(GaN) MMIC x波段PA组成。对于PAPR为6.6dB的60MHz LTE-A调制信号，包络调制器实现了>70%的效率，同时在8Ω阻性负载中提供>7W。包络跟踪系统采用20MHz LTE信号，在9.23GHz下平均输出功率为1.1W, PAE为35.3%(包括包络调制器的功耗)。在这些条件下，x波段PA本身的漏极效率为81.6%，增益为7.6dB。

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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来源期刊

2013 IEEE Compound Semiconductor Integrated Circuit Symposium (CSICS)

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