Resilient antenna structure and a method to manufacture it
First Claim
1. An antenna for a radio-frequency communication device, comprising a helix formed of a wire of a resilient material wound into a cylindrical coil, and a connector part coupled electrically and mechanically to it, the connector part is a solid piece made of a conducting material and at the side of the helix adjacent to the connector part there is a part which is wound more closely than the rest of the helix, thus forming a support coil which is connected to the connector part and applies a spring force against it which prevents the connector pan from being disconnected from the helix.
5 Assignments
0 Petitions
Accused Products
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.
69 Citations
17 Claims
- 1. An antenna for a radio-frequency communication device, comprising a helix formed of a wire of a resilient material wound into a cylindrical coil, and a connector part coupled electrically and mechanically to it, the connector part is a solid piece made of a conducting material and at the side of the helix adjacent to the connector part there is a part which is wound more closely than the rest of the helix, thus forming a support coil which is connected to the connector part and applies a spring force against it which prevents the connector pan from being disconnected from the helix.
-
14. A method for manufacturing an antenna for a communication device operating at a radio frequency, said antenna comprising a helix formed of a wire of a resilient material wound into a cylindrical coil, and a connector part coupled electrically and mechanically to it, comprising the steps of:
-
manufacturing the connector part from a solid piece of a conducting material, and winding the end of the helix that is adjacent to the connector part more closely than the rest of the helix to form a support coil, such that, when the helix is connected to the connector part, an elastic change of form in the support coil is provided which generates in the helix material a spring force applied to the connector part, prevents the connector part from being disconnected from the helix and forms at the radio frequency a low-impedance electric connection between the helix and the connector part. - View Dependent Claims (15, 16, 17)
-
Specification