A 1 GHz frequency-controlled class E2 DC/DC converter for efficiently handling wideband signal envelopes
A 1 GHz frequency-controlled class E2 DC/DC converter for efficiently handling wideband signal envelopes
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用于高效处理宽带信号包络的 1 GHz 频率控制 E2 级 DC/DC 转换器
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
G. Hernandez
中科院分区：
文献类型：
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作者：
J. A. Garcia;R. Marante;M. Ruiz;G. Hernandez
在本文中，1 GHz的E2类DC/DC转换器，实现了调频（FM）控制，提出了有效地处理宽带无线信号包络。适当地终止的反相和整流GaN HEMT器件，获得了一个接近线性的输出电压与开关频率的轮廓，与70%的效率在电压值低于峰值5.1 dB。采用压控振荡器（VCO）和栅极驱动放大器，大信号带宽和压摆率分别约为20 MHz和720 V/μSeg。FM转换器还示出了提供6.6 dB峰均功率比（PAPR）2和4载波WCDMA包络信号的良好动态再现，平均效率超过60%。在纯极性结构中用作包络调制器，处理5 MHz打孔多正弦信号，获得了6.7W的输出功率，发射效率为56%。
In this paper, a 1 GHz class E2 DC/DC converter, implementing a frequency-modulation (FM) control, is proposed for efficiently handling wideband wireless signal envelopes. Properly terminating the inverting and rectifying GaN HEMT devices, a nearly linear output voltage versus switching frequency profile is obtained, with 70% efficiency at a voltage value 5.1 dB below the peak. Incorporating a Voltage Controlled Oscillator (VCO) and a gate-driving amplifier, the large-signal bandwidth (BW) and slew rate have been estimated to be around 20 MHz and 720 V/μSeg, respectively. The FM converter is also shown to offer a good dynamic reproduction of 6.6 dB peak-to-average power ratio (PAPR) 2- and 4-carrier WCDMA envelope signals, with average efficiencies over 60%. Employed as envelope modulator in a pure polar architecture, handling a 5 MHz hole-punched multisine signal, a 6.7 W output power has been obtained with a transmitter efficiency of 56%.