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Title:
CIRCULARLY POLARIZED WAVE ANTENNA AND COMMUNICATION APPARATUS MOUNTING IT
Document Type and Number:
Japanese Patent JP2010050895
Kind Code:
A
Abstract:

To provide a small circularly polarized wave antenna with excellent radiation characteristics, which serves as a circularly polarized wave antenna mounted on a potable terminal device.

The antenna includes a square ground plate 2, a helical 3 provided perpendicularly to the surface of the square ground plate 2; and a central conductor 4 erected vertically with respect to the surface of the square ground plate substantially at the center of the helical. The helical 3 is provided at one of four corners of the square ground plate 2. This realizes a small circularly polarized wave antenna with excellent radiation characteristics.


Inventors:
SAKAGUCHI KOICHI
HASEBE NOZOMI
SUMIMOTO SHIN
Application Number:
JP2008215426A
Publication Date:
March 04, 2010
Filing Date:
August 25, 2008
Export Citation:
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Assignee:
UNIV NIHON
TOKUSEN KOGYO KK
International Classes:
H01Q11/08; H01Q9/32
Attorney, Agent or Firm:
Shinichi Abe
Yoshihiro Shimizu
Yuji Tsujida