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Patent Searching and Data


Title:
HELICAL ANTENNA
Document Type and Number:
Japanese Patent JP2003101328
Kind Code:
A
Abstract:

To provide a helical antenna that can reduce the number of manufacturing steps and has light weight and high rigidity.

Unlike the conventional helical antenna manufacturing method in which a helical antenna is manufactured through two steps of manufacturing a core material which becomes a helical antenna supporting strut and mounting a helical element on the core material, the cylindrical core material of this helical antenna is formed of a triaxial textile, in which a prescribed one axis (Z-axis) is replaced from dielectric fibers with conductive fibers 1 at required intervals, and the helical element of this antenna is formed by using the prescribed one axis (Z-axis) of the textile. Therefore, the helical element can be formed simultaneously at forming the core material.


Inventors:
Mochizuki, Akio
Application Number:
JP2001000285998
Publication Date:
April 04, 2003
Filing Date:
September 20, 2001
Export Citation:
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Assignee:
NEC ENG LTD
International Classes:
D03D15/00; D03D15/12; D03D25/00; H01P11/00; H01Q1/28; H01Q1/36; H01Q11/08; (IPC1-7): H01Q11/08; D03D15/00; D03D15/12; D03D25/00; H01P11/00; H01Q1/28; H01Q1/36
Domestic Patent References:
JP2001148611A
JPH08130409A
JPH04370242A
JP2003523120A
JP2000013117A
Attorney, Agent or Firm:
▲柳▼川 信