Antenna apparatus

Abstract

An antenna apparatus includes a hollow column, a conductive cable, a first metal wire, a column structure, and a second metal wire. The conductive cable is received in the hollow column, and the conductive cable electrically contacts the hollow column via a second conductive wire layer thereof. One side of the first metal wire is electrically connected with a first conductive wire layer of the conductive cable. The column structure has a column body, a metal layer formed on the column body, at least one spiral groove formed on the metal layer for exposing a part of the column body, and two conductive covers respectively disposed on two sides of the column body. Moreover, one of the two conductive covers is electrically connected with the other side of the first metal wire. Furthermore, one side of the second metal wire is electrically connected with the other conductive cover.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawings, in which:

FIG. 1 is a schematic view of an antenna apparatus of the prior art;

FIG. 2 is a schematic view of an antenna apparatus applied to an AP (Access Point) according to the prior art;

FIG. 3 is a schematic view of an antenna apparatus of the present invention; and

FIG. 4 is a perspective, schematic view of a column structure of an antenna apparatus of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 3 and 4, the present invention provides an antenna apparatus, comprising a hollow column 1, a conductive cable 2, a first metal wire 3, a column structure 4, and a second metal wire 5.

The hollow column 1 can be a hollow copper column. Moreover, the conductive cable 2 is received in the hollow column 1, and the conductive cable 2 has a first conductive wire layer 20, a first insulating layer 21 for covering the first conductive wire layer 20, a second conductive wire layer 22 for covering the first insulating layer 21 and electrically connecting with the hollow column 1.

Furthermore, the first metal wire 3 has one side electrically connected with the first conductive wire layer 20 of the conductive cable 2. In addition, the column structure 4 has a column body 40, a metal layer 41 formed on the column body 40, at least one spiral groove 42 formed on the metal layer 41 for exposing one part of the column body 40, and two conductive covers 43, 44 respectively disposed on two sides of the column body 40. One of the two conductive covers 43 is electrically connected with the other side of the first metal wire 3. Moreover, the second metal wire 5 has one side electrically connected with the other conductive cover 44. In addition, the antenna apparatus further comprises an external casing 6 for entirely covering the hollow column 1, the conductive cable 2, the first metal wire 3, the column structure 4, and the second metal wire 5. The antenna apparatus can further comprise another spiral groove (not shown) formed on the metal layer 41 for exposing another part of the column body 40.

Moreover, the column body 40 can be made of ceramic or any other materials that have the characteristics of insulation and being electroplated. The metal layer 41 is formed on a surface of the column body 40 and wraps all around the column body 40. In addition, the metal layer 41 is made of copper, gold, or other materials that have the characteristic of good electrical conductivity. Furthermore, the metal layer 41 is formed on the surface of the column body 40 by electroplating or any other coating methods. Moreover, the spiral groove 42 can have a single pitch or a plurality of different pitches. The conductive covers 43, 44 can be made of iron material. The first and the second metal wire layer 3, 5 can be made of copper material.

The antenna apparatus of the present invention has the following characteristics:

1. The antenna apparatus of the present invention forms a spiral metal layer on a column body to simplify the manufacturing process and increase the yield rate.

2. The structure of the antenna apparatus of the present invention is simple. Therefore, the cost is reduced.

3. By adjusting the pitch of the spiral groove, the antenna apparatus of the present invention can be applied to a single frequency wireless communication device.

4. The structure of the antenna apparatus of the present invention is simple and can be shrunk according to demands. Therefore, the antenna apparatus of the present invention can be used for an external antenna.

Although the present invention has been described with reference to the preferred best molds thereof, it will be understood that the invention is not limited to the details thereof. Various substitutions and modifications have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims.

Claims

1. An antenna apparatus, comprising: a hollow column;a conductive cable received in the hollow column, wherein the conductive cable has a first conductive wire layer, a first insulating layer for covering the first conductive wire layer, a second conductive wire layer for covering the first insulating layer and electrically connecting with the hollow column;a first metal wire having one side electrically connected with the first conductive wire layer of the conductive cable;a column structure having a column body, a metal layer formed on the column body, at least one spiral groove formed on the metal layer for exposing one part of the column body, and two conductive covers respectively disposed on two sides of the column body, wherein one of the two conductive covers is electrically connected with the other side of the first metal wire; anda second metal wire having one side electrically connected with the other conductive cover.

2. The antenna apparatus as claimed in claim 1, wherein the hollow column is a hollow copper column.

3. The antenna apparatus as claimed in claim 1, wherein the column body is made of ceramic.

4. The antenna apparatus as claimed in claim 1, wherein the metal layer is made of copper or gold.

5. The antenna apparatus as claimed in claim 1, wherein the spiral groove has a single pitch.

6. The antenna apparatus as claimed in claim 1, wherein the spiral groove has a plurality of different pitches.

7. The antenna apparatus as claimed in claim 1, further comprising another spiral groove formed on the metal layer for exposing another part of the column body.

8. The antenna apparatus as claimed in claim 1, wherein the conductive covers are made of iron material.

9. The antenna apparatus as claimed in claim 1, wherein the first and the second metal wire layer are made of copper material.

10. The antenna apparatus as claimed in claim 1, further comprising an external casing for entirely covering the hollow column, the conductive cable, the first metal wire, the column structure and the second metal wire.