A 1 GHz Frequency-Controlled Class E2 DC/DC Converter for Efficiently Handling Wideband Signal Envelopes

被引：25

作者：

Garcia, J. A. ^{[1
]}

Marante, R. ^{[1
]}

Ruiz, M. N. ^{[1
]}

Hernandez, G. ^{[1
]}

机构：

[1] Univ Cantabria, Dept Commun Engn, E-39005 Santander, Spain

来源：

2013 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (IMS) | 2013年

关键词：

Class E; DC/DC power converter; envelope modulation; GaN HEMTs; radio transmitters; UHF circuits;

D O I：

10.1109/MWSYM.2013.6697663

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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/uSeg, 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%.

引用

页数：4

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