Title :
Proposal and design of Yagi-Uda antenna for UHF-ITS mobile terminal
Author :
Iigusa, Kyoichi ; Li, Keren ; Sato, Katsuyoshi ; Harada, Hiroshi
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Yokosuka, Japan
Abstract :
A Yagi-Uda antenna with a small short interelement distance (d) of approximately 0.025 lambda is proposed for use as a UHF-band ITS in-vehicle antenna. A distributed constant line is added to the center of the reflector dipole as a reactor. It is shown that a Gw of more than 4.7 dBi can be achieved in the 10-MHz bandwidth. The antenna can be placed near the body of a car without any significant deterioration in the gain. Moreover, Gw can be made to exceed 6.7 dBi by suitably adjusting the distance of the antenna from the body of the car.
Keywords :
UHF antennas; Yagi antenna arrays; dipole antennas; mobile antennas; mobile radio; reflector antennas; UHF-ITS mobile terminal; Yagi-Uda antenna design; bandwidth 10 MHz; distributed constant line; reflector dipole antenna; Bandwidth; Communications technology; Dipole antennas; Directive antennas; Feeds; Frequency; Mobile antennas; Proposals; Radio spectrum management; Structural beams;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171708
