Antenna having a cable grounding area

Patent metadata

Field	Value
Publication number	US-9780444-B2
Application number	US-201514803543-A
Country	US
Kind code	B2
Filing date	Jul 20, 2015
Priority date	Dec 24, 2014
Publication date	Oct 3, 2017
Grant date	Oct 3, 2017

Abstract

An antenna is provided. The antenna includes a feed-in terminal; a radiating portion extended from the feed-in terminal along a first direction to form a first hook portion; a connecting conductor extended from the feed-in terminal to a ground terminal along a second direction opposite to the first direction; and a ground portion extended from the ground terminal and having a cable grounding area, wherein the ground portion and the connecting conductor form a second hook portion opposite to the first hook portion; the cable grounding area has a longitudinal center line; and the first direction and the longitudinal center line form therebetween a specific angle ranging from 49-59 degrees.

First claim

What is claimed is:

1. An antenna, comprising:
a substrate having a first surface and a first width;
a feed-in terminal;
a radiating portion extended from the feed-in terminal along a first direction to form a first hook portion;
a connecting conductor extended from the feed-in terminal to a ground terminal along a second direction opposite to the first direction; and
a ground portion extended from the ground terminal and having a cable grounding area; wherein:
the ground portion and the connecting conductor form a second hook portion opposite to the first hook portion;
the cable grounding area has a longitudinal center line and is located under a coaxial cable;
the first direction and the longitudinal center line form therebetween a specific angle ranging from 49-59 degrees;
the first surface is rectangular and has a first corner area, a second corner area, a third corner area and a fourth corner area;
the second hook portion is located on the first and the fourth corner areas; and
the ground portion is disposed on the first surface, and includes:
a main ground portion disposed on the fourth corner area, being rectangular, and including a first edge, a second edge adjacent to the first edge, a third edge opposite to the first edge, and a fourth edge opposite to the second edge;
a first sub-ground portion extended from the first edge, disposed on the first corner area, and being a rectangular conductor having a second width; and
a second sub-ground portion extended from the second edge toward the third corner area, and being a rectangular conductor having a first inner edge, a first outer edge opposite to the first inner edge, a second length and a third width.

2. The antenna as claimed in claim 1 , wherein:
the radiating portion is disposed on the first surface, and includes:
a first radiating conductor extended from the feed-in terminal, and having a second inner edge, a second outer edge opposite to the second inner edge, a first length and a fourth width;
a second radiating conductor extended from the first radiating conductor, and having a third outer edge and a fifth width; and
a third radiating conductor extended from the second radiating conductor, and having a third inner edge, a fourth outer edge, a fifth outer edge, a third length and a six width; and

the first inner edge is parallel to and adjacent to the fifth outer edge.

3. The antenna as claimed in claim 2 , wherein:
the second width is two-fifths of the first width;
the third width is one-fifth of the first width;
the fourth width is one-fifth of the first width;
the fifth width is one-fifth of the first width;
the sixth width is one-fifth of the first width;
the first length is larger than the second length; and
the second length is larger than the third length.

4. The antenna as claimed in claim 2 , wherein:
the radiating portion, the connecting conductor and the ground portion form thereamong a gap; and
the third radiating conductor is extended to the cable grounding area along a direction opposite to the first direction.

5. The antenna as claimed in claim 2 , wherein:
the antenna has an operating frequency band determined by a total length being the sum of the first length, the fourth width and the third length;
a length from the feed-in terminal, through the connecting conductor and the first sub-ground portion, to the cable grounding area is equal to the total length; and
the total length is equal to one-fourth of an operating wavelength of the antenna.

6. The antenna as claimed in claim 2 , wherein:
the substrate has a left edge and a lower edge;
the fourth edge overlaps the left edge; and
the third edge overlaps the lower edge.

7. The antenna as claimed in claim 6 , wherein:
the first sub-ground portion has a left edge overlapping the left edge of the substrate having an upper edge; and
the first sub-ground portion has an upper edge overlapping the upper edge of the substrate.

8. The antenna as claimed in claim 7 , wherein the second sub-ground portion has a first outer edge overlapping the lower edge of the substrate.

9. The antenna as claimed in claim 8 , wherein the second outer edge overlaps the upper edge of the substrate.

10. The antenna as claimed in claim 6 , wherein the substrate further comprises a right edge, and the third outer edge overlaps the right edge of the substrate.

11. The antenna as claimed in claim 1 , wherein:
the fifth outer edge and the first inner edge of the second sub ground portion form therebetween a specific distance; and
the specific distance determines an impedance matching of the antenna.

12. The antenna as claimed in claim 1 , wherein the coaxial cable has a central conductor coupled to the feed-in terminal and a shielded conductor surrounding the central conductor.

13. The antenna as claimed in claim 12 , wherein:
the cable grounding area further has a first terminal, and a second terminal opposite to the first terminal; and
the longitudinal center line passes through the feed-in terminal, the first terminal and the second terminal.

14. The antenna as claimed in claim 13 , wherein the shielded conductor is electrically connected to the cable grounding area.

15. An antenna, comprising:
a substrate having a first surface and a first width;
a radiating portion extended along a first direction; and
a cable grounding area extended along a second direction, and located under a coaxial cable, wherein:

the first direction and the second direction form therebetween a specific angle ranging from 49-59 degrees;
the first surface is rectangular and has a first corner area, a second corner area, a third corner area and a fourth corner area; and
the antenna further includes a ground portion disposed on the first surface, and including:
a main ground portion disposed on the fourth corner area, being rectangular, and including a first edge, a second edge adjacent to the first edge, a third edge opposite to the first edge, and a fourth edge opposite to the second edge,
a first sub-ground portion extended from the first edge, disposed on the first corner area, and being a rectangular conductor having a second width; and
a second sub-ground portion extended from the second edge toward the third corner area and being a rectangular conductor having a first inner edge a first outer edge opposite to the first inner edge, a second length and a third width.

16. The antenna as claimed in claim 15 , wherein:
the radiating portion is extended to a first turning point to form a first radiating conductor;
the first radiating conductor is extended from the first turning point to a second turning point to form a second radiating conductor; and
the second radiating conductor is extended from the second turning point to form a third radiating conductor.

17. An antenna, comprising:
a substrate having a first surface and a first width;
a feed-in terminal;

a radiating portion extended from the feed-in terminal along a first direction; and
a ground portion having a cable grounding area extended along a second direction and located under a coaxial cable, wherein:
the first direction and the second direction form therebetween a specific angle ranging from 49-59 degrees;
the first surface is rectangular and has a first corner area, a second corner area a third corner area and a fourth corner area; and
the ground portion is disposed on the first surface, and includes:
a main ground portion disposed on the fourth corner area, being rectangular, and including a first edge, a second edge adjacent t

Assignees

• Arcadyan Technology Corp
• Arcadyan Technology Corp

Inventors

• Huang Chih-Yung
• Lo Kuo-Chang

Classifications

• H01Q1/241

  used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence) · CPC title

• H01Q1/48 Primary

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q1/50

  Structural association of antennas with earthing switches, lead-in devices or lightning protectors · CPC title

• H01Q1/243

  with built-in antennas · CPC title

• H01Q13/10

  Resonant slot antennas · CPC title