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Patent Searching and Data


Title:
ANTENNA STRUCTURE AND TELEVISION RECEIVER
Document Type and Number:
Japanese Patent JP2005252406
Kind Code:
A
Abstract:

To provide an antenna structure capable of electrically changing directivity and moreover, having a low attitude structure.

The structure is configured by an antenna structure, in which feeding elements and parasitic elements are disposed in parallel and the elements are formed into an antenna structure of a loop type or an inverse-F type. The parasitic elements are each configured so as to include a variable reactance element and can change the characteristics into a waveguide and a reflector.


Inventors:
TAROUMARU MAKOTO
OHIRA TAKASHI
IIGUSA KIYOUICHI
TAWARA SATORU
TANAKA HIROTAKA
SAWATANI TAKUMA
ITO TAKASHI
MORITA EMI
Application Number:
JP2004056892A
Publication Date:
September 15, 2005
Filing Date:
March 01, 2004
Export Citation:
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Assignee:
ATR ADVANCED TELECOMM RES INST
International Classes:
H01Q1/24; H01Q3/44; H01Q7/00; H01Q9/04; H01Q9/42; H04N5/64; H01Q19/28; H01Q19/32; (IPC1-7): H01Q3/44; H01Q7/00; H01Q19/28; H04N5/64
Attorney, Agent or Firm:
Shiro Nakajima