Title :
A higher-order microstrip reflectarray at Ka-band
Author :
Kuo-Cheng Chen ; Tzuang, C.-K.C. ; Huang, J.
Author_Institution :
Inst. of Electr. Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
This paper presents an offset-feed reflectarray with a tilt beam to 57.6/spl deg/ away from the broadside at 38.5 GHz. It operates 311 identical modified square patches with different delay lines at higher-order degenerated (2, 0) and (0, 2) modes. A prototype antenna is built and tested, showing the directivity 29.2 dBi, 3-dB beamwidth 6.6/spl deg//6.8/spl deg/ (Az/El) and aperture efficiency 40.3% at 38.5 GHz.
Keywords :
antenna testing; delay lines; microstrip antenna arrays; millimetre wave antenna arrays; offset reflector antennas; planar antenna arrays; reflector antenna feeds; 3-dB beamwidth; 38.5 GHz; EHF; Ka-band; aperture efficiency; broadside; delay lines; directivity; higher-order degenerated modes; higher-order microstrip reflectarray; modified square patches; offset-feed reflectarray; planar microstrip reflectarray; prototype antenna; tilt beam; Bandwidth; Delay lines; Error correction; Feeds; Microstrip antenna arrays; Microstrip antennas; Radar antennas; Reflector antennas; Resonance; Wireless LAN;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.960160
