Linear power amplifier based on 3-way Doherty amplifier with predistorter

Linear power amplifier based on 3-way Doherty amplifier with predistorter

This paper presents a 3-way Doherty amplifier with predistorter (PD) for a repeater application. It is implemented using three 60 Watts PEP silicon LDMOSFETs and tested using two-tone and one- and two-carrier down-link WCDMA signals. For the two-carrier downlink WCDMA signal, the amplifier provides...

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Hauptverfasser: Bumjae Shin, Jeonghyeon Cha, Jangheon Kim, Woo, Y.Y., Jaehyok Yi, Bumman Kim
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Amplifiers
Applied sciences
Circuit properties
Circuits
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Impedance
Linearity
Microwave amplifiers
Multiaccess communication
Operational amplifiers
Power amplifiers
Predistortion
Repeaters
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Testing
Transistors
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Beschreibung
Zusammenfassung:This paper presents a 3-way Doherty amplifier with predistorter (PD) for a repeater application. It is implemented using three 60 Watts PEP silicon LDMOSFETs and tested using two-tone and one- and two-carrier down-link WCDMA signals. For the two-carrier downlink WCDMA signal, the amplifier provides -49.1 dBc adjacent-channel-leakage-ratio (ACLR) and 10.3% power-added efficiency (PAE) at an output power 40 dBm which is an improvement of 8.5 dBc in linearity and 2% in efficiency compared to a similar class-AB amplifier.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2004.1339011