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

fYear

2009

fDate

Sept. 30 2009-Oct. 2 2009

Firstpage

149

Lastpage

152

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference, 2009. EuRAD 2009. European

Conference_Location

Rome

Print_ISBN

978-1-4244-4747-3

Type

conf

Filename

5307116