METAMATERIAL ANTENNA USING A MAGNETO-DIELECTRIC MATERIAL

• US 20110187601A1
• Filed: 02/03/2009
• Published: 08/04/2011
• Est. Priority Date: 02/20/2008
• Status: Active Grant

• Current Assignee: Emw Co., Ltd., Pohang University Of Science Industry-Academy Cooperation
• Original Assignee: Emw Co., Ltd., Pohang University Of Science Industry-Academy Cooperation
• Inventors: Jang, Kyung Duk, Park, Wee Sang, Sung, Won Mo, Ryou, Byung Hoon
• Granted Patent: US 8,547,281 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 13/28 comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements or conductive elements forming artificial dielectric
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
• CPC Class Codes: H01Q 15/08 formed of solid dielectric material
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0485 Dielectric resonator antennas

Abstract

The invention relates to the size reduction of an antenna using a magneto-dielectric material for a CRLH-TL (Composite Right/Left Handed Transmission Line) antenna. In particular, the invention provides a small and low profile metamaterial antenna attained by performing SRR (Split Ring Resonator) magnetization on a dielectric material and applying the magneto-dielectric material to the CRLH-TL antenna that is composed of patches and vias. Even further, the invention provides a metamaterial antenna using a magneto-dielectric material, the antenna comprising: a substrate which is made up of a magneto-dielectric material and which has an SRR structure inserted thereto; patches with a CRLH-TL structure formed at a predetermined distance above the substrate; and a ground plane formed at a predetermined distance below the substrate.

Claims

1. A metamaterial antenna using a magneto-dielectric material, comprising:

a substrate into which SRR (Split Ring Resonator) structures are inserted and in which the magneto-dielectric material is implemented;

a patch of a CRLH-TL (Composite Right/Left Handed Transmission Line) structure, spaced apart from the substrate at a specific interval and formed on an upper side of the substrate; and

a ground spaced apart from the substrate at a specific interval and formed on a lower side of the substrate.

2. The metamaterial antenna according to claim 1, wherein the substrate, the patch, and the ground are interconnected through vias.

3. The metamaterial antenna according to claim 1, wherein:

the substrate comprises the SRR structures having two unit cells, and one unit cell of the SRR structures comprises eight SRRs radially disposed.

4. The metamaterial antenna according to claim 3, wherein:

one unit cell of the SRR structures comprises six first SRR of a relatively long length radially, disposed in a longitudinal direction of the substrate 200, and second SRRs of a short length, disposed in a horizontal direction of the substrate 200, and the first and second SRRs are formed to face each other on the upper and lower sides of the substrate.

5. The metamaterial antenna according to claim 4, wherein both ends of the first and second SRRs formed to face each other on the upper and lower sides of the substrate are interconnected through vias penetrating the substrate.

6. The metamaterial antenna according to claim 4, wherein a slot is formed at a central portion of the first and second SRRs formed on the lower side of the substrate.

7. The metamaterial antenna according to claim 1, wherein the patch is an antenna of the CRLH-TL structure including two unit cells.

8. The metamaterial antenna according to claim 1, wherein the patch is spaced apart from a microstrip line of a feed line at a specific interval, coupled with the microstrip line, and supplied with power.

9. A wireless communication terminal including a metamaterial antenna using a magneto-dielectric material, comprising:

a substrate into which SRR (Split Ring Resonator) structures are inserted and in which the magneto-dielectric material is implemented;

a patch of a CRLH-TL (Composite Right/Left Handed Transmission Line) structure, spaced apart from the substrate at a specific interval and formed on an upper side of the substrate; and

a ground spaced apart from the substrate at a specific interval and formed on a lower side of the substrate.