Miniature wire antenna

• US 8,605,003 B2
• Filed: 03/17/2010
• Issued: 12/10/2013
• Est. Priority Date: 04/24/2009
• Status: Active Grant

• Current Assignee: ASUSTek Computer, Inc.
• Original Assignee: ASUSTek Computer, Inc.
• Inventors: Lai, Ming-Iu, Wang, Chun-Hsiung
• Primary Examiner(s): Wimer, Michael C
• Assistant Examiner(s): ISLAM, HASAN Z
• Application Number:
  US12/725,750
• Publication Number:
  US 20100271266A1
• Time in Patent Office: 1,364 Days
• Field of Search: 343/700.MS, 343/895, 343/702, 343/725, 343/729, 343/846, 343/848
• US Class Current: 343/895
• CPC Class Codes: H01Q 11/08 Helical antennas
• CPC Class Codes: H01Q 5/378 Combination of fed elements with parasitic elements

Abstract

A miniature wire antenna includes N rectangular metal plates located at a first layer of a PCB, a tunable metal plate located at the first layer of the PCB and N serpentine lines located at a second layer of the PCB. The positions of the N serpentine lines correspond to the positions of the rectangular metal plates. A first end of each of the serpentine lines is connected to the corresponding rectangular metal plate, and a second end of each of the serpentine lines is connected to the next rectangular metal plate. A first end of the last serpentine line is connected to the corresponding rectangular metal plate, and a second end of the last serpentine line is connected to the tunable metal plate.

Claims

1. A miniature wire antenna comprising:

N rectangular metal plates located at a first layer of a PCB;

a tunable metal plate located at the first layer of the PCB; and

N serpentine lines located at a second layer of the PCB;

wherein N is an integer and greater than 1, positions of the N serpentine lines correspond to positions of the N rectangular metal plates, wherein each of the serpentine lines is substantially in full above a corresponding one of the rectangular metal plates except joining portions;

a first end of each of the serpentine lines but a last one is connected to the corresponding one of the rectangular metal plates, and a second end of each of the serpentine lines but the last one is connected to a next one of the rectangular metal plates;

a first end of the last one of the serpentine lines is connected to the corresponding one of the rectangular metal plates, and a second end of the last one of the serpentine lines is connected to the tunable metal plate.

2. The miniature wire antenna according to claim 1, wherein the tunable metal plate is a rectangular metal plate.

3. The miniature wire antenna according to claim 1, wherein part of the tunable metal plate is a miniature wire antenna.

4. The miniature wire antenna according to claim 1, wherein the miniature wire antenna is a single band wireless local area network (WLAN) antenna or a global positioning system (GPS) antenna.

5. The miniature wire antenna according to claim 4, wherein the miniature wire antenna is a dual band WLAN antenna or an ultra wide band antenna.

6. The miniature wire antenna according to claim 1, wherein the PCB further comprises multiple vias for connecting the rectangular metal plates and the serpentine lines.

7. The miniature wire antenna according to claim 1, wherein a region formed by a periphery of each of the serpentine lines is equal in shape to a region of the corresponding one of the rectangular metal plates.

8. The miniature wire antenna according to claim 1, wherein the last one of the serpentine lines is one of two end ones of the serpentine lines.