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A class-J power amp...
A class-J power amplifier with varactor-based dynamic load modulation across a large bandwidth
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- Hallberg, William, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Gustafsson, David, 1983 (författare)
- Telefonaktiebolaget L M Ericsson,Ericsson
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- ÖZEN, MUSTAFA, 1984 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andersson, Christer, 1982 (författare)
- Mitsubishi Electric Corporation
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- Kuylenstierna, Dan, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Fager, Christian, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- ISBN 9781479982752
- 2015
- 2015
- Engelska.
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Ingår i: 2015 IEEE MTT-S International Microwave Symposium, IMS 2015. - 9781479982752
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A novel class-J operated power amplifier (PA) utilizing varactor-based dynamic load modulation is presented. It is theoretically shown that the proposed PA can maintain high average efficiency across more than 35% RF bandwidth by means of a purely reactive load modulation after the transistor output capacitance. The theory is experimentally verified by a 15 W GaN HEMT PA operating from 1.80 to 2.20 GHz, using SiC varactors as dynamically tunable load elements. In the band, the PA presents a power added efficiency (PAE) higher than 39% at 6 dB output power back-off. For a 3.84 MHz W-CDMA signal with 6.7 dB peak to average power ratio, an average PAE higher than 39% and an adjacent channel leakage ratio below -45.8 dBc are obtained across the entire band after linearization.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- power amplifiers
- wideband
- Energy efficiency
- silicon carbide (SiC)
- varactors
- gallium nitride (GaN)
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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