REFLECTARRAY ANTENNA FOR WIRELESS TELECOMMUNICATION AND STRUCTURE THEREOF

• US 20140333503A1
• Filed: 07/24/2013
• Published: 11/13/2014
• Est. Priority Date: 05/07/2013
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: BYUN, Woo Jin, KANG, Min Soo, KIM, Kwang Seon, KIM, Bong-Su, CHO, Yong Heui
• Granted Patent: US 9,537,225 B2
• Time in Patent Office: Days
• US Class Current: 343/853
• CPC Class Codes: H01Q 21/065 Patch antenna array
• CPC Class Codes: H01Q 3/46 Active lenses or reflecting arrays

Abstract

A reflectarray antenna for wireless telecommunication includes a ground plane; a dielectric substrate attached on the ground plane; and a first antenna patch formed on one side of the dielectric substrate. Further, the reflectarray antenna includes a second antenna patch formed adjacent to the first antenna patch with a separation area therebetween; and a phase adjustment member disposed in the separation area to adjust a phase of a scattered field of the antenna by the appliance of a DC voltage.

Claims

1. A reflectarray antenna for wireless telecommunication, comprising:

a ground plane;

A dielectric substrate attached on the ground plane;

a first antenna patch formed on one side of the dielectric substrate;

a second antenna patch formed adjacent to the first antenna patch with a separation area therebetween;

a phase adjustment member disposed in the separation area to adjust a phase of a scattered field of the antenna by the appliance of a DC voltage.

2. The apparatus of claim 1, wherein the first antenna patch and the second antenna patch are arranged above and below with the separation area therebetween.

3. The apparatus of claim 1, wherein the first antenna patch and the second antenna patch are arranged right and left with the separation area therebetween.

4. The apparatus of claim 1, wherein the phase adjustment member comprises a diode.

5. The apparatus of claim 4, wherein the phase of the scattered field is adjusted by controlling the voltage to the diode.

6. The apparatus of claim 1, wherein the first antenna patch and the second antenna patch are same in their height.

7. The apparatus of claim 1, wherein the first antenna patch and the second antenna patch are different in their height.

8. The apparatus of claim 7, wherein the phase of the scattered field is adjusted by controlling the height of the first antenna patch and the second antenna patch.

9. The apparatus of claim 1, further comprising:

a metal pad formed to be spaced from the bottom of the ground plane;

a first and a second conductive pillars configured to connect between the metal pad and the first and second antenna patches.

10. The apparatus of claim 9, wherein the first and second conductive pillars are formed by a via processing and a conductive material filling.

11. A reflectarray antenna structure having the reflectarray antenna of claim 1, the reflectarray antenna being arranged in an N×

N array.

12. A reflectarray antenna for wireless telecommunication, comprising:

a ground plane;

a dielectric substrate attached on the ground plane;

an antenna patch group placed on the dielectric substrate, wherein the antenna patch group has a plurality of antenna patches arranged in an N×

N array with separation areas between the antenna patches; and

a plurality of phase adjustment members disposed in the separation areas to adjust a phase of a scattered field of the antenna by the appliance of a DC voltage.

13. The apparatus of claim 12, wherein each of the phase adjustment members comprises a diode.

14. The apparatus of claim 13, wherein the phase of the scattered field is adjusted by controlling the voltage to the diode.

15. The apparatus of claim 12, wherein the respective antenna patches in the antenna patch group are same in their height.

16. The apparatus of claim 12, wherein the respective antenna patches in the antenna patch group are different in their height.

17. The apparatus of claim 16, wherein the phase of the scattered field is adjusted by controlling the height of the respective antenna patches.

18. The apparatus of claim 12, further comprising:

a metal pad formed to be spaced from the bottom of the ground plane;

a conductive pillar group configured to connect between the metal pad and the respective antenna patches in the antenna patch group.

19. The apparatus of claim 18, wherein the respective conductive pillars are formed by a via processing and a conductive material filling.

20. A reflectarray antenna structure having the reflectarray antenna of claim 12, the reflectarray antenna being arranged in an N×

N array.