Title:
ANTENNA ELEMENT
Document Type and Number:
Japanese Patent JP2004153464
Kind Code:
A
Abstract:
To provide an antenna element with stable characteristics without dispersion in the resonance frequency.
Looping back a conductor wire forming a helical coil at a tip of the helical coil forms a straight line part 14 whose free end is directed to a base end on an axial center of the helical coil. The helical coil is fixed by a bobbin 16 being insert-formed by an insulating resin and a hollow cylinder part 16a is formed to the bobbin 16 for facing the straight line part 14. The straight line part 14 is at least partially supported with two ribs 16b, 16b placed at the inner face of the cylinder part 16a of the bobbin 16 in the axial direction and whose thickness in a direction around the axial center is thinner at least at their inner tip.
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Inventors:
MINOURA YASUHIRO
MIZUNO HIROTOSHI
SHINOZAKI YOSHIAKI
MIZUNO HIROTOSHI
SHINOZAKI YOSHIAKI
Application Number:
JP2002314919A
Publication Date:
May 27, 2004
Filing Date:
October 29, 2002
Export Citation:
Assignee:
YOKOWO SEISAKUSHO KK
International Classes:
H01Q1/36; H01Q1/24; H01Q1/40; H01Q5/10; (IPC1-7): H01Q1/36; H01Q1/24; H01Q1/40; H01Q5/01
Attorney, Agent or Firm:
Tetsuo Moriyama