Antenna, particularly a mobile phone antenna, and a method to ma

Details Antenna, particularly a mobile phone antenna, and a method to ma Antenna, particularly a mobile phone antenna, and a method to ma

1995-04-05

1999-05-18

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

Spiral or helical type

343702, 29600, H01Q1/36

Patent

active

059054751

ABSTRACT:
A helical mobile phone antenna with a support part (7), a connector (9) connected to the helix, and a protecting case (6) surrounding the helix and the support part. The support part and the connector part are integrally formed, whereby a weak joint between them is eliminated. The lower end of the connector may have an electrically conducting sleeve (5) and is preferably threaded so the antenna can be mounted. The support part (7) and the connector part (9) are molded into an integral body (5), preferably so that the support part surrounds the threaded part of the helix (2), and that the connector part (4) surrounds with a clearance the leg part (3) of the helix. An electrically conducting cylindrical sleeve (5) is connected to the lower end of the connector part, preferably so that the sleeve is arranged in the injection mold, and is fastened to the connector part during molding. Connecting threads (10) for the antenna are formed in the peripheral surface of the connector part or the sleeve.

REFERENCES:
patent: 2938210 (1960-05-01), Harris
patent: 4611213 (1986-09-01), Johnson et al.
patent: 4725395 (1988-02-01), Gasparaitis et al.
patent: 5262792 (1993-11-01), Egashira
patent: 5341149 (1994-08-01), Valimaa et al.
patent: 5343213 (1994-08-01), Kottke et al.
patent: 5436633 (1995-07-01), Liu
patent: 5742259 (1998-04-01), Anamaa

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