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Design of linear and efficient power amplifiers by generalization of the Doherty theory

Christian Fager (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; William Hallberg (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Mustafa Özen (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; K. Andersson ; Koen Buisman (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; D. Gustafsson
Proceedings of the 2017 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications, PAWR 2017 p. 29-32. (2017)
[Konferensbidrag, övrigt]

The Doherty power amplifier (PA) is now established as one the most widely adopted architectures for enhancement of energy efficiency in wireless communication transmitters. More than 80 years after its invention, most of today's implementations still rely on the original circuit topology. This paper describes a new Doherty solution continuum that is revealed when the original λ/4 combiner is replaced by a generic, analytically derived, lossless combiner network. As a result, novel Doherty PA solutions that in practice are both more efficient and more linear are enabled. A variety of practical design examples are included to illustrate how the presented techniques can enable enhanced performance in both traditional and emerging mm-wave 5G wireless communication transmitter applications.

Nyckelord: energy efficiency, gallium-nitride, linearity, Power amplifiers, wireless communication



Denna post skapades 2017-05-12. Senast ändrad 2017-09-28.
CPL Pubid: 249282

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur