Title :
Circular polarization microstrip antenna array with compact structure for anticollision radar
Author :
Chen Bing-jie ; Hu Da-cheng
Author_Institution :
Coll. of Physic & Electron. Eng., Sichuan Normal Univ., Chengdu, China
Abstract :
A multilayer slot-coupled microstrip antenna array is proposed for anticollision radar at 24GHz with circular polarization (CP) characteristic. The array is composed of 24 elements with 24-way microstrip line power divider network. The antenna can achieve CP by rotate the radiation patch a certain angle without polarizer. The VSWR coefficient of the array´s ports is less than 1.8, and the side lobe level of array is below -26.5dB with axial ratio <;3dB in the mainlobe beamwidth. This antenna array has compact structure and small size, thus it will not impair the automobile outline.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; power dividers; radar antennas; slot antenna arrays; 24-way microstrip line power divider network; CP characteristic; VSWR coefficient; anticollision radar applications; automobile outline; circular polarization characteristic; compact structure; frequency 24 GHz; mainlobe beamwidth; multilayer slot-coupled microstrip antenna array; radiation patch; side lobe level; small size; Arrays; Azimuth; Microstrip; Microstrip antenna arrays; Microstrip antennas; Radar; Radar antennas; anticollision radar; microstrip antenna; slot-coupled;
Conference_Titel :
Communication Problem-Solving (ICCP), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-4246-6
DOI :
10.1109/ICCPS.2014.7062225
