Resilient antenna structure and a method to manufacture it

Details Resilient antenna structure and a method to manufacture it Resilient antenna structure and a method to manufacture it

1996-04-02

1998-04-21

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Spiral or helical type

343702, 343906, 29600, H01Q 136

Patent

active

057422591

ABSTRACT:
The invention relates to the structure and manufacturing method of a helix antenna suitable for use in mobile phones and other radio devices. The helix part of the antenna is made of a resilient material, like stainless spring steel wire, and its lower part is wound into a support coil more dense than the rest of the helix. The antenna includes a connector part through which it is electrically and mechanically connected to a radio device. The upper end of the connector part is formed such that when the helix part is fitted onto it, the support coil will undergo a change of form which generates a spring force that keeps the helix electrically and mechanically connected to the connector part. An elastic protective material is fitted onto the helix, attached by melting to a special joint surface in the connector part.

REFERENCES:
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patent: 4435713 (1984-03-01), Gasparaitis et al.
patent: 4725395 (1988-02-01), Gasparaitis et al.
patent: 4800395 (1989-01-01), Balzano et al.
patent: 4867698 (1989-09-01), Griffiths
patent: 5231412 (1993-07-01), Eberhardt et al.
patent: 5274393 (1993-12-01), Scott
patent: 5341149 (1994-08-01), Valimaa et al.
patent: 5436633 (1995-07-01), Liu
patent: 5451974 (1995-09-01), Marino

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