Title :
Linear Transmitter Architecture Using BAW Filter
Author :
Bar, P. ; Giry, A. ; Hibon, I. ; Dumont, F. ; Cros, D. ; Ancey, P. ; Carpentier, J.F.
Author_Institution :
XLIM Res. Inst., Limoges Univ.
Abstract :
A bulk acoustic wave filter, which can be used in EDGE transmitter, is presented in this paper. It attenuates power amplifier harmonic frequencies and out-of-band noise generated by sigma-delta modulator needed in linear architecture. This filter achieves 2.4 dB insertion loss including matching network to 50 Omega and more than 15 dB of return loss. Power handling capability and linearity performance of bulk acoustic wave devices are detailed and satisfy to power application requirements. Antenna mismatch effect has been evaluated using an active load-pull bench. This filter is connected in series to power amplifier to form a prototype of power amplifier module for GSM/EDGE standard in the DCS frequency band. The power amplifier is realized using STMicroelectronics 0.25 mum BiCMOS technology
Keywords :
3G mobile communication; BiCMOS integrated circuits; acoustic filters; bulk acoustic wave devices; cellular radio; power amplifiers; radio transmitters; sigma-delta modulation; telecommunication standards; 50 ohm; BAW filter; BiCMOS technology; DCS frequency band; EDGE transmitter; GSM-EDGE standard; STMicroelectronics; active load-pull bench; antenna mismatch effect; bulk acoustic wave filter; insertion loss; linear transmitter architecture; linearity performance; out-of-band noise; power amplifier harmonic frequencies; sigma-delta modulator; Acoustic noise; Acoustic waves; Chirp modulation; Noise generators; Nonlinear filters; Power amplifiers; Power generation; Power harmonic filters; Power system harmonics; Transmitters; Bulk acoustic wave; EDGE transmitters; antenna mismatch; bandpass filters; differential power amplifiers;
Conference_Titel :
Radio and Wireless Symposium, 2007 IEEE
Conference_Location :
Long Beach, CA
Print_ISBN :
1-4244-0445-2
Electronic_ISBN :
1-4244-0445-2
DOI :
10.1109/RWS.2007.351809
