A 5.8GHz, 47% efficiency, linear outphase power amplifier with fully integrated power combiner

Author

Pham, Anh ; Sodini, Charles G.

Author_Institution

Microsystems Technol. Lab., MIT, Cambridge, MA

fYear

2006

fDate

11-13 June 2006

Lastpage

160

Abstract

This paper presents an outphase power amplifier, consisting of two class-E power amplifiers and a power combiner. Using shielded coplanar striplines, the first low-loss, fully integrated 5.8 GHz Wilkinson combiner is realized with excellent isolation for a robust outphase PA. The outphase power amplifier, fabricated in IBM 7WL SiGe BiCMOS, achieves a peak efficiency of 47% at the maximum output power of 18.5dBm. For an orthogonal frequency division multiplexing input signal of 32 sub-channels of 64-QAM, the adjacent channel power leakage ratio is better than 32dBc

Keywords

BiCMOS analogue integrated circuits; Ge-Si alloys; microwave power amplifiers; power combiners; quadrature amplitude modulation; strip lines; 5.8 GHz; BiCMOS integrated circuits; SiGe; Wilkinson combiner; class-E power amplifier; integrated power combiner; linear outphase power amplifier; orthogonal frequency division multiplexing; shielded coplanar stripline; Amplitude modulation; High power amplifiers; Isolation technology; Linearity; OFDM modulation; Peak to average power ratio; Power amplifiers; Power combiners; Quadrature amplitude modulation; Signal mapping;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-9572-7

Type

conf

DOI

10.1109/RFIC.2006.1651115

Filename

1651115