MULTIBAND COMPOSITE RIGHT AND LEFT HANDED (CRLH) SLOT ANTENNA

• US 20160190705A1
• Filed: 12/22/2015
• Published: 06/30/2016
• Est. Priority Date: 03/12/2009
• Status: Abandoned Application

• Current Assignee: Tyco Electronics Services GmbH (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: Tyco Electronics Services GmbH (TE Connectivity Ltd. (United Kingdom))
• Inventors: Lee, Cheng Jung, Gummalla, Ajay, Achour, Maha
• Application Number:
  US14/977,868
• Publication Number:
  US 20160190705A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials

Abstract

This application relates to slot antenna devices based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures.

Claims

1. (canceled)

16. The antenna device of claim 1, comprising:

a plurality of series capacitance; and

a plurality of shunt inductors;

wherein the CRLH metamaterial structure is loaded by the series capacitances and the shunt inductors to support a plurality of specified resonances.

17. The antenna device of claim 16, wherein the first conductive layer, the plurality of series capacitances, and the plurality of shunt inductors are located on a single layer of dielectric substrate.

2. An antenna device, comprising:

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

a first conductive layer formed on the first surface of the dielectric substrate, the first conductive layer defining;

a top ground region;

a feed conductor;

a matching slot stub defined by a first edge of the feed conductor;

a connecting slot section defined by a second edge of the feed conductor opposite the first edge and defined by a first edge of the top ground region;

a metal plate;

a coupling gap separating the top ground from the metal plate;

an antenna slot section defined in part by a second edge of the top ground region and defined by an edge of the metal plate; and

a closed end conductively coupling the metal plate to the top ground, the closed end defining an edge of the antenna slot section; and

a second conductive layer formed on the second surface of the dielectric substrate, the second conductive layer including a bottom ground;

wherein the first conductive layer and the dielectric substrate form a composite right and left handed (CRLH) metamaterial structure.

3. The antenna device of claim 2, wherein the bottom ground is coupled to a portion of the top ground.

4. The antenna device of claim 2, comprising a coplanar waveguide (CPW) slot, and wherein the feed and the CPW slot form a CPW structure.

5. The antenna device of claim 2, comprising a lumped capacitor coupled across the coupling gap between a top ground of the first conductive layer and the separated metal plate region.

6. The antenna device of claim 2, wherein the slot is separated into two slot sections by an interdigital capacitor.

7. The antenna device of claim 6, wherein a first capacitance provided by the interdigital capacitor, or by a lumped capacitor located between a portion of the conductive strip and the separated metal plate region, defines at least in part a right handed (RH) resonance frequency.

8. The antenna device of claim 2, wherein a capacitance provided by the coupling gap or a lumped capacitor coupled across the coupling gap defines at least in part a left handed (LH) resonance frequency.

9. The antenna device of claim 2, wherein the second edge of the top ground region and the edge of the metal plate, defining the antenna slot in part, are parallel.

10. The antenna device of claim 2, wherein the antenna slot is rectilinear in shape.

11. The antenna device of claim 2, comprising:

a series capacitance; and

a shunt inductor;

wherein the CRLH metamaterial structure is configured to support a lower-frequency resonance as compared to the antenna device lacking the series capacitance and the shunt inductor.

12. The antenna device of claim 11, wherein the first conductive layer, the series capacitance, and the shunt inductor are located on a single layer of the dielectric substrate.

13. The antenna device of claim 11, wherein the series capacitance is provided using the coupling gap.

14. The antenna device of claim 11, wherein one or more of the series capacitance or the shunt inductor are discrete RF components.

15. The antenna device of claim 11, wherein the CRLH metamaterial structure comprises a three-dimensional structure including the series capacitance and the shunt inductor.

18. An antenna device, comprising:

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

a first conductive layer formed on the first surface of the dielectric substrate, the first conductive layer defining;

a top ground region;

a feed conductor;

a matching slot stub defined by a first edge of the feed conductor;

a connecting slot section defined by a second edge of the feed conductor opposite the first edge and defined by a first edge of the top ground region;

a metal plate;

a coupling gap separating the top ground from the metal plate;

an antenna slot section defined in part by a second edge of the top ground region and defined by an edge of the metal plate; and

a closed end conductively coupling the metal plate to the top ground, the closed end defining an edge of the antenna slot section;

wherein the first conductive layer and the substrate form a composite right and left handed (CRLH) metamaterial structure located on a single layer of the dielectric substrate.

19. The antenna device of claim 18, comprising a lumped capacitor coupled across the coupling gap between a top ground of the first conductive layer and the separated metal plate region.

20. The antenna device of claim 18, wherein the slot is separated into two slot sections by an interdigital capacitor.

21. A method, comprising:

forming a first conductive layer on a first surface of the dielectric substrate, including;

forming a top ground region;

forming a feed conductor;

forming a matching slot stub defined by a first edge of the feed conductor;

forming a connecting slot section defined by a second edge of the feed conductor opposite the first edge and defined by a first edge of the top ground region;

forming a metal plate;

forming a coupling gap separating the top ground from the metal plate;

forming an antenna slot section defined in part by a second edge of the top ground region and defined by an edge of the metal plate; and

forming a closed end conductively coupling the metal plate to the top ground, the closed end defining an edge of the antenna slot section;

wherein the first conductive layer and the substrate form a composite right and left handed (CRLH) metamaterial structure.