Title :
A direct up-conversion transmitter with integrated prescaler for reconfigurable multi-band/multi-standard base stations
Author :
Platz, Johannes ; Strasser, Georg ; Feilkas, K. ; Maurer, Linus ; Springer, Andreas
Author_Institution :
Linz Center of Mechatronics GmbH, Austria
Abstract :
A direct up-conversion transmitter IC for reconfigurable multi-band/multi-standard base stations is presented. It was manufactured in a 0.35 μm 75 GHz fT SiGe BiCMOS process. The chip consists of a quadrature modulator, an integrated baseband filter, and a reconfigurable prescaler which includes the quadrature signal generation and provides three different divider-ratios for a reduction of the VCO tuning range. The up-converter was designed for a frequency range of 400 MHz up to 2.7 GHz. Measurements show a maximum output channel power of -1.9 dBm and an ACLR lower than -57 dBc. The measured EVM is lower than 2.2% and the noise floor has an upper limit of -153 dBm/Hz.
Keywords :
BiCMOS analogue integrated circuits; frequency dividers; low-pass filters; mobile radio; prescalers; software radio; voltage-controlled oscillators; 0.35 micron; 400 MHz to 2.7 GHz; 75 GHz; BiCMOS analog IC; EVM; SDR base stations; SiGe; VCO tuning range; baseband lowpass filter; direct up-conversion transmitter; double balanced mixers; frequency divider; integrated reconfigurable prescaler; mobile communication; multiband base stations; noise floor upper limit; prescaler divider-ratios; quadrature modulator; quadrature signal generation; reconfigurable multistandard base stations; software defined radio; up-conversion I/Q-modulator; Base stations; Baseband; BiCMOS integrated circuits; Filters; Germanium silicon alloys; Manufacturing processes; Signal generators; Silicon germanium; Transmitters; Voltage-controlled oscillators;
Conference_Titel :
Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE
Print_ISBN :
0-7803-8983-2
DOI :
10.1109/RFIC.2005.1489852
