DIELECTRIC RESONATOR ANTENNA (DRA) WITH A TRANSVERSE-RECTANGLE WELL

• US 20090184875A1
• Filed: 02/27/2008
• Published: 07/23/2009
• Est. Priority Date: 01/18/2008
• Status: Active Grant

• Current Assignee: National Taiwan University (Government of The Republic of China)
• Original Assignee: National Taiwan University (Government of The Republic of China)
• Inventors: Kiang, Jean-Fu, CHANG, Tze-Hsuan
• Granted Patent: US 7,663,553 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 9/0485 Dielectric resonator antennas

Abstract

The present invention relates to a dielectric resonator antenna (DRA) with a transverse-rectangle well. The DRA comprising a substrate, a ground plane, a feed conductor, and a dielectric resonator. The resonator further includes a main body and a well penetrating the main body to enhance the electric field, to increase the radiation efficiency, to broaden the bandwidth, and to create new resonant mode. The DRA has the radiation pattern of broad beamwidth with vertical polarization. Accordingly, the invention can also be adjusted as WLAN 802.11a antenna.

Claims

1. A dielectric resonator antenna with a transverse-rectangle well, comprising:

a substrate, having a first surface and a second surface;

a ground plane, having a hollow portion and formed on the first surface;

a feed conductor, formed on the second surface; and

a resonator of dielectric material mounted on the ground plane, and further including a main body and a well, said main body having a first side and a second side and the first side and the second side are both vertical to the ground, and the well transversely penetrates through the first side and the second side.

2. The dielectric resonator antenna as claimed in claim 1, wherein the main body of the dielectric resonator is shaped as rectangle.

3. The dielectric resonator antenna as claimed in claim 1, wherein the well of the dielectric resonator is shaped as rectangle.

4. The dielectric resonator antenna as claimed in claim 1, wherein the dielectric constant of the dielectric resonator is between 10 to 100.

5. The dielectric resonator antenna as claimed in claim 1, wherein the longer side of the feed conductor is orthogonal to the longer side of the hollow portion.

6. The dielectric resonator antenna as claimed in claim 1, wherein the feed conductor extends and passes through the central part of the hollow portion.

7. The dielectric resonator antenna as claimed in claim 1, wherein the main body is mounted on the ground plane over a contact area, and the feed conductor extends and passes through the central part of the hollow portion

8. The dielectric resonator antenna as claimed in claim 1, wherein the radiation frequency with return loss lower than −

10 dB is between 4.76 to 5.86 GHz.