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A 1.1GHz bandwidth, 46–62 efficiency Continuous Mode Doherty Power Amplifier

机译：1.1GHz带宽，效率46％–62％的连续模式Doherty功率放大器

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摘要

In this paper, a novel technique is proposed to improve Doherty Power Amplifiers' (DPAs') bandwidth and efficiency by manipulating harmonic components to reshape current and voltage waveforms over a continuous bandwidth. Such operation creates a series of continuous high efficiency modes at each frequency over the band, which is referred as Continuous Mode Doherty Power Amplifier (C-DPA) in this paper. Based on the proposed technique, a 30-Watts broadband C-DPA is designed over the entire mainstream communication frequency band 1.65-2.75GHz. Using a 20MHz, 7.5dB PAPR LTE signal, the fabricated DPA is measured and linearized. According to the measured results, the designed DPA exhibits 46%-62% modulated efficiency over the designed 1.1GHz frequency range while maintaining Adjacent Channel Power Ratio (ACPR) below -45dBc. To the best of the authors' knowledge, this is the state-of-the-art performance of DPAs.
机译：在本文中，提出了一种新颖的技术，通过操纵谐波分量在连续带宽上重塑电流和电压波形来提高Doherty功率放大器（DPA'）的带宽和效率。这种操作会在频带上的每个频率上创建一系列连续的高效率模式，在本文中称为连续模式Doherty功率放大器（C-DPA）。基于所提出的技术，在整个主流通信频段1.65-2.75GHz上设计了30瓦的宽带C-DPA。使用20MHz，7.5dB PAPR LTE信号，可以对制造的DPA进行测量和线性化。根据测量结果，设计的DPA在设计的1.1GHz频率范围内表现出46％-62％的调制效率，同时将相邻信道功率比（ACPR）保持在-45dBc以下。据作者所知，这是DPA的最新性能。

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