Title :
A 2.4-GHz ISM-transmitter IC with novel quadrature clock generation technique for a localization application
Author :
Popken, Gralf ; Baureis, Peter ; Hartmann, Marcus ; Milosiu, Heinrich ; Neubauer, Harald ; Oehler, Frank ; Peter, Matthias
Author_Institution :
Fraunhofer Inst. for Integrated Circuits, Erlangen, Germany
Abstract :
The design of a fully integrated 2.4-GHz ISM-band transmitter for a localization application is presented. The signal path includes DAC, anti-alias filter, IQ-modulator and power amplifier. The clock generation part comprises voltage controlled oscillator, phase-locked loop and a quadrature clock generator. A novel quadrature clock generation scheme is proposed and described in detail. It reduces phase errors significantly and avoids the VCO pulling problem. The circuit was fabricated in a 0.35 μm SiGe BiCMOS technology.
Keywords :
BiCMOS analogue integrated circuits; CMOS digital integrated circuits; Ge-Si alloys; UHF filters; UHF integrated circuits; UHF power amplifiers; clocks; digital-analogue conversion; integrated circuit design; mixed analogue-digital integrated circuits; modulators; phase locked loops; power amplifiers; radio direction-finding; radio transmitters; voltage-controlled oscillators; 0.35 micron; 2.4 GHz; BiCMOS analog IC; CMOS digital IC; DAC; IQ-modulator; ISM-transmitter IC; SiGe; VCO pulling problem; anti-alias filter; localization; phase errors; phase-locked loop; power amplifier; quadrature clock generation technique; silicon-germanium BiCMOS technology; voltage controlled oscillator; Application specific integrated circuits; BiCMOS integrated circuits; Clocks; Germanium silicon alloys; Phase locked loops; Power amplifiers; Power filters; 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.2005.1489901
