A Generalized Combiner Synthesis Technique for Class-E Outphasing Transmitters
Artikel i vetenskaplig tidskrift, 2017

In this paper, a generic combiner design technique is developed for class-E outphasing transmitters. The design procedure starts with calculation of the combiner network parameters that guarantee high efficiency switch mode operation of the PAs in each branch. Recently developed continuous class-E modes theory is then utilized to create an additional degree of freedom for calculation of the combiner network parameters. This additional degree of freedom along with duty cycle control provides an important possibility for achieving high average efficiency over a large bandwidth. A CMOS-GaN outphasing transmitter prototype is realized for experimental verification. The prototype provides drain efficiencies higher than 60% at 6 dB back-off across 750-1050 MHz band. Further, the peak output power remains nearly flat versus frequency, where the variation across the band is +/- 0.18 dB around 44 dBm.

power

combiner

GaN

outphasing

high efficiency

Chireix

efficiency enhancement

class-E

CMOS

Författare

MUSTAFA ÖZEN

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

M. P. Van Der Heijden

NXP Semiconductors

M. Acar

Ampleon

R. Jos

Ampleon

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

IEEE Transactions on Circuits and Systems I: Regular Papers

1549-8328 (ISSN)

Vol. 64 5 1126-1139

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/tcsi.2016.2636155