Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ANTENNA DEVICE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2015/141386
Kind Code:
A1
Abstract:
[Problem] To provide an antenna device having a structure that suppresses performance degradation caused by height reduction. [Solution] Four FM band antenna elements (401-404) and two AM band antenna elements (405, 406) are arranged in parallel on an antenna base (10). Additionally, a circuit board (20) including synthesis circuits connected on a one-to-one basis to each antenna element is disposed in the inner space of the antenna elements (401-406). To make the antenna elements (401-406) omnidirectional within a horizontal plane, the antenna elements (401-406) are composed from a helically wrapped linear conductor and a planar conductor electrically connected to the linear conductor at a portion substantially farthest from a grounding surface (antenna base (10)).

Inventors:
YANAGISAWA WASUKE (JP)
MIZUNO HIROTOSHI (JP)
SHIRAKATA YASUSHI (JP)
AOKI YOSHIO (JP)
Application Number:
PCT/JP2015/054795
Publication Date:
September 24, 2015
Filing Date:
February 20, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
YOKOWO SEISAKUSHO KK (JP)
International Classes:
H01Q9/36; H01Q1/36; H01Q9/38; H01Q21/06; H01Q21/30
Foreign References:
JPS59183502A1984-10-18
JPH10242731A1998-09-11
JPH01165206A1989-06-29
JPH11355031A1999-12-24
Attorney, Agent or Firm:
SUZUKI, Seigoh (JP)
Masatake Suzuki (JP)
Download PDF: