Title :
Wideband OFDM Transmitter for Wireless Communications
Author :
Kivinen, J. ; Lindeberg, J. ; Pirkkalaniemi, J. ; Vaananen, O. ; Varonen, M. ; Golikov, V. ; Juurakko, P. ; Vainikainen, P. ; Halonen, K.
Author_Institution :
IDC SMARAD/Radio Lab., Helsinki Univ. of Technol.
Abstract :
An OFDM transmitter with digital IF is demonstrated. The OFDM modulator is designed with an on-chip digital to analog converter. An image frequency mixer and an RF amplifier chain is realized partly with commercial GaAs MMIC circuits and partly with discrete transistors. About 10% power added efficiency in the power stage is achieved with ACPR level of -35 dB applying an A-class amplifier
Keywords :
III-V semiconductors; MMIC mixers; MMIC power amplifiers; OFDM modulation; broadband networks; digital-analogue conversion; gallium arsenide; modulators; radio transmitters; GaAs; MMIC circuits; OFDM modulator; OFDM transmitter; RF amplifier; class A power amplifiers; digital modulators; digital-to-analog converter; image frequency mixer; wireless communications; Digital modulation; Digital-analog conversion; Gallium arsenide; MMICs; Mixers; OFDM modulation; Radiofrequency amplifiers; Transmitters; Wideband; Wireless communication; Digital modulators; power amplifiers;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249513
