Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS1
Session:
Number:POS1-18
L-probe Fed Stacked Rectangular Microstrip Antenna combined with Ring Antenna for Triple Band (GPS/VICS/ETC) Operation in ITS
Daisuke Tanaka, Takafumi Fujimoto, Takashi Takenaka,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
Authors have proposed an L-probe fed stacked rectangular microstrip antenna combined with a ring antenna for triple-band operation in ITS. However, the mutual coupling between the patch and rectangular ring is strong and radiation pattern in the ETC band tilts. In our previous studies, we have clarified that the mutual coupling can be controlled by arranging the ring antenna at the center between patches. In this paper, the ring MSA is mounted on the dielectric to fabricate the antenna easily. Moreover the relationships between geometrical parameters of the antenna and antenna characteristics (VSWR, axial ratio and bandwidth) at three frequency bands are clarified by simulation. By the simulation, it is desirable that the ring MSA is arranged around the center between upper and lower patches at the triple bands. Moreover, the antenna for GPS/VICS/ETC is designed. The designed antenna satisfies the specification at the triple band and the antenna is very small in size.