Title :
Gain and radiation pattern improvement in scanning beams of a shaped dielectric lens antenna by employing a patch array feed
Author :
Tajima, Yosuke ; Yamada, Yoshihide
Author_Institution :
Nat. Defense Acad., Yokosuka
Abstract :
In order to increase beam shapes and antenna gains, patch array feed for the shaped dielectric lens antenna is developed. Important technical progresses are summarized in the following. The array element patch antenna that has the similar radiation patterns as a rectangular horn is developed. Excitation coefficient of the patch array feed is obtained through the radiation pattern synthesis method. Designed radiation phase and amplitude patterns agreed rather well with the objective pattern. At the 30deg scanning beam, gain increase of 5.2 dB and excellent beam shapes are achieved.
Keywords :
antenna feeds; antenna radiation patterns; lens antennas; microstrip antenna arrays; amplitude patterns; array element patch antenna; excitation coefficient; gain-radiation pattern improvement; patch array feed; scanning beam; shaped dielectric lens antenna; Antenna arrays; Antenna feeds; Antenna radiation patterns; Current distribution; Dielectrics; Frequency; Intelligent transportation systems; Lenses; Patch antennas; Phased arrays;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4618933
