MULTIBAND COMPOSITE RIGHT AND LEFT HANDED (CRLH) SLOT ANTENNA

• US 20100231470A1
• Filed: 03/12/2010
• Published: 09/16/2010
• Est. Priority Date: 03/12/2009
• Status: Active Grant

• Current Assignee: Tyco Electronics Services GmbH (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: Rayspan Corporation
• Inventors: Achour, Maha, Gummalla, Ajay, Lee, Cheng-Jung
• Granted Patent: US 9,246,228 B2
• Time in Patent Office: Days
• US Class Current: 343/722
• 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. An antenna device, comprising:

a conductive layer having a perimeter defined by one or more straight or curved lines; and

an opening formed in the conductive layer, defining a slot,

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

2. The antenna device as in claim 1 further comprising

a substrate having a first and second surface, wherein the conductive layer is formed on the first surface of the substrate, forming a first conductive layer.

3. The antenna device as in claim 2 further comprising

a second conductive layer formed on the second surface of the substrate.

4. The antenna device as in claim 3, wherein

the second conductive layer is coupled to the first conductive layer.

5. The antenna device as in claim 1 further comprising

a plurality of conductive edges defined by the slot.

6. The antenna device as in claim 5 further comprising

a conductive element coupled to the antenna slot, wherein the conductive element provides an electromagnetic signal to a plurality of conductive edges.

7. The antenna device as in claim 1, wherein

the slot includes an antenna slot, a connecting slot, an CPW slot, a matching slot, and a coupling gap formed in the conductive layer.

8. The antenna device as in claim 7, wherein

the coupling gap includes an extended coupling gap.

9. The antenna device as in claim 8 further comprising

a first lumped capacitor coupled to the coupling gap and the antenna slot.

10. The antenna device as in claim 9, wherein

the antenna slot is separated into two sections by a second lumped capacitor, interdigital capacitor, or a combination thereof.

11. The antenna device as in claim 1, wherein

the slot includes an antenna slot and a coupling gap, a first inductance is formed on a first conductive element proximate a first edge of the antenna slot, a second inductance is formed on a second conductive element proximate a second edge of the antenna slot, a first capacitance is formed in the antenna slot, and a second capacitance is formed in the coupling gap.

12. The antenna device as in claim 11, wherein

the first inductance and the first capacitance defines an RH resonance frequency.

13. The antenna device as in claim 12, wherein

the first capacitance is altered by the second lumped capacitor for tuning the RH resonance frequency, interdigital capacitor, or a combination thereof.

14. The antenna device as in claim 11, wherein

the second inductance and the second capacitance defines an LH resonance frequency.

15. The antenna device as in claim 14, wherein

the second capacitance is altered by the first lumped capacitor, coupling gap, or a combination thereof for tuning the LH resonance frequency.

16. The antenna device as in claim 1, wherein

a first conductive element proximate a first edge of the slot defines an RH inductor element, the slot defines an RH capacitor element, an LH capacitor element is electromagnetically coupled to the RH inductor element, and a second conductive element proximate a second edge of the slot defines an LH inductor element that is electromagnetically coupled to an RH inductor.

17. The antenna device as in claim 1, wherein

the conductive element includes a coplanar wave (CPW) feed for transmitting or receiving electromagnetic waves.

18. The antenna device as in claim 1, wherein

the composite right and left handed (CRLH) structure supports dual-band or multiband frequencies.

19. The antenna device as in claim 1, wherein

the slot is in the shape of a rectangle, triangle, circle or other polygon or non-linear shape.

20. An antenna device, comprising:

a slot antenna;

a series capacitance;

a shunt inductor, wherein

the slot antenna is loaded by the capacitance and the inductor to form a CRLH antenna and excite a lower-frequency resonance.

21. The antenna device as in claim 20, wherein

the slot antenna, the series capacitance, and the shunt inductor are printed on a single layer of a dielectric substrate.

22. The antenna device as in claim 20, wherein

the series capacitance or the shunt inductor are discrete RF components.

23. The antenna device as in claim 20, wherein

the slot antenna, the series capacitance, and the shunt inductor form a three dimensional structure.

24. An antenna device, comprising:

a slot antenna;

a plurality of series capacitance;

a plurality of shunt inductors, wherein

the slot antenna is loaded by the series capacitances and the shunt inductors to form a CRLH antenna and excite a plurality of low, mid, or high frequency resonances.

25. The antenna device as in claim 24, wherein

the slot antenna, the series capacitance, and the shunt inductor are printed on a single layer of dielectric substrate.

26. The antenna device as in claim 24, wherein

the series capacitance or shunt inductor are discrete RF components.

27. The antenna device as in claim 24, wherein

the slot antenna, series capacitance, and shunt inductor form a three dimensional structure.

28. A method, comprising:

forming a substrate;

forming a first conductive layer on a first surface of the substrate, comprising the steps of;

forming a plurality of conductive edges defined by one or more vertical openings connected to one or more horizontal openings; and

forming a conductive element defined by the one or more vertical openings and the one or more horizontal openings, wherein the conductive element provides an electromagnetic signal to the plurality of conductive edges; and

forming a second conductive layer on a second surface of the substrate and structured to overlap a portion of the plurality of conductive edges defined by the one or more vertical openings connected to the one or more horizontal openings,

wherein the substrate, the plurality of conductive edges, the one or more vertical and horizontal openings, and the second conductive layer are structured to produce a composite right and left handed (CRLH) structure.