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100-MHz GaN-HEMT Class-G Supply Modulator for High-Power Envelope-Tracking Applications.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Mar2017, Vol. 65 Issue 3, p872-880. 9p. - Publication Year :
- 2017
-
Abstract
- In this paper, a highly efficient class-G supply modulator targeting high-power wideband envelope tracking applications is presented. The maximum output power using a 50% duty cycle at 100-MHz switching frequency is 62 W for a switching between 30 and 50 V delivered in a 25- $\Omega $ load. The modulator including its driver circuit reaches an overall efficiency in the range of 97%–88% for switching frequencies from dc to 100 MHz for passive loads in a wide range. The modulator is designed to operate at various supply voltage levels and is evaluated within the range from 20 to 50 V while powering loads from 25 to 100 $\Omega $ . The modulator is characterized in terms of efficiency, switching frequency, and nonlinearities. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 65
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 121745661
- Full Text :
- https://doi.org/10.1109/TMTT.2016.2633987