Linearization Study of a Highly Efficient CMOS-GaN RF Pulse Width Modulation Based Transmitter
Paper i proceeding, 2012

This paper studies linearity of a 2 GHz, 10 Watt peak output power RF pulse width modulation (RF-PWM) based transmitter. The transmitter incorporates a tunable load network class-E PA as the final output stage. The tunable load network enables dynamic optimization of the class-E along with the duty cycle resulting in high efficiency over a wide range of output power levels. A digital predistiortion based linearization scheme is proposed to enhance the linearity of the transmitter. After linearization, the transmitter exhibits an adjacent channel power ratio (ACPR) of -45 dBc with a 3.84 MHz, 6.7 dB peak-to-average power ratio (PAPR) W-CDMA signal. The average drain efficiency of the GaN HEMT output stage is 67% and the total transmitter efficiency is 54%.

Författare

MUSTAFA ÖZEN

GigaHertz Centrum

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

Christer Andersson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

GigaHertz Centrum

Thomas Eriksson

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

GigaHertz Centrum

Mustafa Acar

Christian Fager

Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik

GigaHertz Centrum

European Microwave Conference

136-139

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

Mer information

Skapat

2017-10-07