Apparatus for wideband directional antenna

• US 20020050954A1
• Filed: 11/01/2001
• Published: 05/02/2002
• Est. Priority Date: 11/02/2000
• Status: Active Grant

• Current Assignee: Ace Technology Corporation
• Original Assignee: Ace Technology Corporation
• Inventors: Yong-Hee, Lee, Ju-Hyung, Kim, Woon-Phil, Kim, Jeong-Kun, Oh, Byung-Il, Oh
• Granted Patent: US 6,606,067 B2
• Time in Patent Office: Days
• US Class Current: 343/770
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence
• CPC Class Codes: H01Q 9/265 Open ring dipoles; Circular dipoles

Abstract

Disclosed is a wideband directional antenna in a wireless communication service, comprising at least one radiation element, wherein the radiation element includes at least one loop, wherein one feeding point of the loop is connected to feeder and the other feeding point is connected to a ground distributor.

Claims

1. A wideband directional antenna in a wireless communication service, comprising:

at least one radiation means, wherein the radiation means includes at least one loop, wherein one feeding point of the loop is connected to feeding means and the other feeding point is connected to a ground distributing means.

2. The wideband antenna as recited in claim 1, wherein the radiation means includes two loops, which are symmetrically disposed on a printed board and at both sides of the feeding means.

3. The wideband antenna as recited in claim 2, wherein the loops are a square-shaped or delta (Δ

)-shaped conducting line.

4. The wideband antenna as recited in claim 3, wherein the loop includes a conducting line of a quarter wavelength of a using frequency.

5. The wideband antenna as recited in claim 1, wherein the feeding means and a ground means extends from a power dividing means and a ground distributing means to the printed board and wherein the feeding means is in upward parallel to the grounding means under the printed board.

6. A wideband directional antenna in a wireless communication service, comprising:

a plurality of radiation means for a radiating radio waves, wherein one radiation means consists of two loops which are symmetrically coupled with each other sharing one side thereof;

a plurality of holding means for holding and fixing the plurality of the radiation means in a predetermined position;

a plurality of feeding means for feeding signals to the plurality of the radiation means;

a plurality of ground distribution means for grounding the plurality of the radiating means;

a plurality of power dividing means for dividing and supplying signals to the plurality of the radiation means;

a plurality of impedance transforming means for matching impedances between the power dividing means and the feeding means;

a reflection means for reflecting radio waves with maintaining a predetermined distance to the radiation means and fixing a plurality of configuration elements;

a plurality of holding means for fixing the plurality of distribution means with maintaining a predetermined distance to the reflection means;

a feeding cable for supplying signals to the power dividing means; and

choke reflection means for suppressing the side lobes of the antenna, wherein the choke reflecting means are located in both sides of the reflection means in longitudinal direction.

7. The wideband directional antenna as recited in claim 6, wherein the radiation means is a skeleton slot radiation element, which two square-shaped loops are symmetrically coupled with each other sharing one side thereof and one feeding point of the skeleton slot radiation element is connected the feeding means and the other feeding point is connected to the ground distribution means.

8. The wideband directional antenna as recited in claim 7, wherein a length of the loop in the skeleton slot radiation element is a wavelength of a using frequency.

9. The wideband directional antenna as recited in claim 7, wherein the radiation element is a delta slot radiation element, which two delta (Δ

)-shaped loops are symmetrically coupled with each other sharing one side thereof and one feeding point of the delta slot radiation element is connected to the feeding means and the other feeding point is connected to the ground distribution means.

10. The wideband directional antenna as recited in claim 9, wherein a length of the loop in the delta slot radiation element is a wavelength of a using frequency.

11. The wideband directional antenna as recited in claim 6, wherein the feeding means are connected to the center of the radiation means.

12. The wideband directional antenna as recited in claim 6, wherein the radiation means is formed with conductive materials.

13. The wideband directional antenna as recited in claim 6, wherein the radiation means is formed with a printed pattern on a printed board.

14. The wideband directional antenna as recited in claim 6, wherein the feeding means is formed with a parallel line feeding structure of a bridge type, which one feeding line is connected to one feeding point of the loop of the radiation means and the other feeding line is connected to the other feeding point of the loop of the radiation means.

15. The wideband directional antenna as recited in claim 6, wherein the feeding means is formed to a micro strip line with a predetermined distance from the reflection means by using a low dielectric material.