NDLI: A 2 GHz, 85W Uneven GaN Doherty power amplifier

Content Provider	IEEE Xplore Digital Library
Author	Bathich, K. Subramanian, V. Sayed, A. Boeck, G.
Copyright Year	2008
Description	Author affiliation: Microwave Eng. Lab., Berlin Univ. of Technol., Berlin (Bathich, K.; Subramanian, V.; Sayed, A.; Boeck, G.)
Abstract	Modern wireless communication standards, e.g. UMTS, are making use of modulation schemes, resulting in signals with high levels of peak-to-average power ratio (PAR). For example, the W-CDMA signal used in UMTS-standard has typical PAR levels above 6 dB. Conventional single-ended power amplifiers will result in low levels of average efficiency, if they were implemented in the transmitters of such communication systems. Furthermore, power control in cellular communication networks is a crucial requirement, in both, base station and handset transmitters, to reduce the operating cost on the base station side, and to minimize the adjacent-channel interference. It is though apparent, that power amplifiers in modern wireless communication networks, should operate over a wide output back off region, with high levels of efficiency, maintained over the power operating range. The Doherty power amplifier technique is a competitive solution for efficiency enhancement, which has been recently widely investigated, due to its relatively simple circuitry and ease of implementation.
Starting Page	1
Ending Page	4
File Size	81751
Page Count	4
File Format	PDF
ISBN	9781424426416
DOI	10.1109/APMC.2008.4958295
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gallium nitride Power amplifiers Peak to average power ratio Wireless communication Transmitters Base stations Communication standards 3G mobile communication Multiaccess communication Power control
Content Type	Text
Resource Type	Article

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