Title :
A High Linearity, Low Phase Noise and High Operating Temperature Ku-band MMIC VCO-Prescaler, suitable for Complex Modulations ACC radar source
Author :
Gourdon, C. ; Sevin, R. ; Domnesque, D. ; Camiade, M.
Author_Institution :
United Monolithic Semicond., Orsay
Abstract :
A new VCO concept dedicated to automotive radar applications is described in this paper. The fully integrated architecture used makes it low cost assembly oriented. Comfortable flexibility is proposed thanks to the integration of a dual-rank prescaler, three different tuning slope ports and a variable output power. Excellent performance is also provided thanks to the use of InGaP GaAs HBT, 12% of tuning range is obtained with a phase noise of -98dBc/Hz @ 100kHz from carrier @ 12.75GHz. Associated with a multiplier a transmitter can be built for 77GHz radar. A free running good linearity of less than 1% has been obtain over more than 30MHz tuning range on the medium slope tuning port. Very wide chip operating temperature range, from -40 deg C up to +125 deg C is also achieved
Keywords :
III-V semiconductors; MMIC oscillators; bipolar MMIC; circuit tuning; gallium compounds; indium compounds; phase noise; prescalers; radar transmitters; road vehicle radar; voltage-controlled oscillators; -40 to 125 C; 12.75 GHz; 77 GHz; ACC radar source; HBT; InGaP-GaAs; automotive radar; complex modulations; dual-rank prescaler; fully integrated architecture; high linearity VCO-prescaler; high operating temperature VCO-prescaler; ku-band MMIC VCO-prescaler; low phase noise VCO-prescaler; medium slope tuning port; multiplier; push-push VCO; transmitter; Assembly; Automotive engineering; Costs; Linearity; MMICs; Phase modulation; Phase noise; Radar applications; Temperature; Voltage-controlled oscillators; MMIC; automotive radar; free run; high linearity; prescaler; push-push VCO;
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
DOI :
10.1109/EUMC.2006.281207
