Title :
A fully integrated 77GHz FMCW radar transmitter using a fractional-N frequency synthesizer
Author :
Salle, Didier ; Landez, Christophe ; Savary, Pierre ; Montoriol, Gilles ; Gach, Robert ; Li, Hao ; Ghazinour, Akbar
Author_Institution :
Freescale Semiconducteurs France, Toulouse, France
fDate :
Sept. 30 2009-Oct. 2 2009
Abstract :
A single chip transmitter for automotive FMCW radar application is implemented in 0.18 um SiGe BiCMOS technology. The frequency synthesizer driving a 77 GHz VCO is based on a fractional-N PLL embedding a programmable divider operating at 10 GHz. A 28 bit sigma delta modulator associated to a digital controller enables a versatile generation of FMCW modulation with a resolution of 3 Hz and a linearity of 1%. The measured phase noise is -75 dBc/Hz at 100 kHz offset from a 77 GHz carrier and output power is 18 dBm.
Keywords :
BiCMOS integrated circuits; CW radar; FM radar; MIMIC; radar transmitters; road vehicle radar; sigma-delta modulation; voltage-controlled oscillators; BiCMOS technology; FMCW radar transmitter; SiGe; VCO; automotive FMCW radar application; digital controller; fractional-N frequency synthesizer; frequency 77 GHz; programmable divider; sigma delta modulator; single chip transmitter; size 0.18 mum; word length 28 bit; Automotive engineering; BiCMOS integrated circuits; Delta modulation; Digital modulation; Frequency synthesizers; Germanium silicon alloys; Radar applications; Silicon germanium; Transmitters; Voltage-controlled oscillators;
Conference_Titel :
Radar Conference, 2009. EuRAD 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4747-3
