Referenced Items are not available for this document.
This letter presents a pulsed high-efficiency power amplifier with increased spectral purity obtained by supply modulation of the pulse envelope. The PA operates at 2.14 GHz with 78% efficiency at 6 W peak power, and with 66.4% average efficiency over a 14.7 μs pulse with a 4.1 dB PAR shaped by a 90% efficient resonant-pulse envelope supply modulator. For PARs greater than 4.1 dB, the signal envelope can be split between the supply modulator and the PA drive, with up to 25% improvement in composite efficiency.
Published in:
Microwave and Wireless Components Letters, IEEE
(Volume:22
,
Issue:
6
)
Date of Publication: June 2012
- Page(s):
- 279 - 281
- ISSN :
- 1531-1309
- INSPEC Accession Number:
- 12769120
- Digital Object Identifier :
- 10.1109/LMWC.2012.2197381
- Product Type:
- Journals & Magazines
- Date of Publication :
- 17 May 2012
- Date of Current Version :
- 01 June 2012
- Issue Date :
- June 2012
- Sponsored by :
- IEEE Microwave Theory and Techniques Society
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