Multi-band antenna

Patent metadata

Field	Value
Publication number	US-2016164181-A1
Application number	US-201514958618-A
Country	US
Kind code	A1
Filing date	Dec 3, 2015
Priority date	Dec 9, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

A multi-band antenna includes a conductive cap, a ground plane element, a supporting frame, a first radiating conductive element, a second radiating conductive element, a third radiating conductive element, and a plurality of conductive pieces. The multi-band antenna of the disclosure makes the radiating conductive element contact with the conductive cap physically via the conductive piece. Therefore, although a gap similar to a slot is formed, the resonant mode of the multi-band antenna is not excited via the slot.

First claim

What is claimed is:

1 . A multi-band antenna, comprising:
a conductive cap having a first sub-conductive piece, a second sub-conductive piece and a conductive connecting portion connected between the first sub-conductive piece and the second sub-conductive piece, the first sub-conductive piece being at a distance from the second sub-conductive piece to form a gap at least at one side of the conductive connecting portion; a ground plane element having a signal feed line; a supporting frame, the ground plane element being disposed between the supporting frame and the conductive cap; a first radiating conductive element, a second radiating conductive element and a third radiating conductive element disposed at the supporting frame, wherein the first radiating conductive element is disposed between the second radiating conductive element and the third radiating conductive element; and a plurality of conductive pieces, wherein the first radiating conductive element, the second radiating conductive element and the third radiating conductive element have electrical contacts connected with the conductive cap via one of the conductive pieces, respectively, and another electrical contact of the first radiating conductive element is connected with the signal feed line.

2 . The multi-band antenna according to claim 1 , wherein the conductive cap is an outer cover of an electronic device.

3 . The multi-band antenna according to claim 1 , wherein the material of the conductive cap is metal or carbon fiber.

4 . The multi-band antenna according to claim 1 , wherein the supporting frame is made of non-conductive material.

5 . The multi-band antenna according to claim 1 , wherein the dielectric coefficient of the supporting frame is at least different from the dielectric coefficient of one of the first radiating conductive element, the second radiating conductive element and the third radiating conductive element.

6 . The multi-band antenna according to claim 1 , wherein the conductive pieces are metal spring plates.

7 . The multi-band antenna according to claim 1 , wherein the second radiating conductive element and the third radiating conductive element are disposed within the orthographic projection area of the second sub-conductive piece.

8 . The multi-band antenna according to claim 1 , further comprising:
a parasitic conductive element disposed on the supporting frame and between the second radiating conductive element and the first radiating conductive element, the ground plane element further having a short conductive element, and the parasitic conductive element being connected with the short conductive element.

Assignees

• Pegatron Corp

Inventors

• Huang Chin-Ting
• Wu Hsiao-Wen

Classifications

• H01Q9/40

  Element having extended radiating surface · CPC title

• H01Q5/378

  Combination of fed elements with parasitic elements · CPC title

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q9/42

  with folded element, the folded parts being spaced apart a small fraction of the operating wavelength · CPC title

• H01Q1/44

  using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) · CPC title