Title :
A low cost 24-GHz FMCW radar for automobile application
Author :
Wang, Chuang ; Qian, Rong ; Yang, Ming-hui ; Sun, Yun ; Gu, Jian-zhong ; Sun, Xiao-wei
Author_Institution :
Shanghai Inst. of Micro-Syst. & Inf. Technol., China
Abstract :
A 24-GHz frequency modulation continuous-wave radar sensor with a novel type, low-profile, and low cost array antenna, is presented. A Gunn voltage-controlled oscillator and the driver amplifier MMIC act as transmitter and a rat-race hybrid mixer act as receiver, respectively, connected by a hexaferrite microstrip circulator. A 100-patch microstrip antenna array with a high gain and a narrow beam width operates at radar system in k-band. This antenna is made by 10×10 elements (90×90mm2), the E-plane has the 3dB beam-width ±3.5°, and H-plane has a slightly broader beam-width ±7°. The gain measured at 24GHz is 22dB.
Keywords :
CW radar; FM radar; Gunn oscillators; MMIC amplifiers; MMIC mixers; ferrite circulators; microstrip antenna arrays; road vehicle radar; voltage-controlled oscillators; 22 dB; 24 GHz; FMCW radar; Gunn voltage-controlled oscillator; automobile application; coplanar waveguide; driver amplifier MMIC; frequency modulation continuous-wave radar sensor; hexaferrite microstrip circulator; microstrip antenna array; rat-race hybrid mixer; Antenna arrays; Automobiles; Costs; Frequency modulation; Gunn devices; Microstrip antenna arrays; Microstrip antennas; Radar antennas; Radar applications; Sensor arrays;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610381
