Title :
Development of a novel 38.5 GHz planar Cassegrain antenna
Author :
Wu, Min-Chuan ; Chiu, Chieh-Ping ; Chung, Shyh-Jong
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
The design and results of a novel 38.5 GHz Cassegrain antenna using printed-circuit planar reflectors are presented. This antenna contains a feed patch antenna, a main reflector for twisting and focusing the incident wave, and a sub-reflector for polarization selection. The sub-reflector is made of a PCB printed with a dense metal grid, which is transparent to one polarization but would reflect the other polarization. The main reflector includes hundreds of microstrip antennas which are used to produce twisted reradiation fields and provide phase compensation. This type of antenna has a low-profile configuration and is suitable for mechanical beam scanning
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; millimetre wave antenna arrays; reflector antennas; 38.5 GHz; 38.5-GHz Cassegrain antenna; dense metal grid; feed patch antenna; incident wave focusing; incident wave twisting; low-profile configuration; main reflector; mechanical beam scanning; microstrip antennas; phase compensation; polarization-selection; printed-circuit planar reflectors; radiation pattern; sub-reflector; twisted reradiation fields; Antenna feeds; Directive antennas; Microstrip antennas; Military communication; Patch antennas; Polarization; Radar antennas; Receiving antennas; Reflector antennas; Wireless LAN;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985390
