Projected artificial magnetic mirror waveguide

• US 8,588,563 B2
• Filed: 02/28/2011
• Issued: 11/19/2013
• Est. Priority Date: 04/11/2010
• Status: Expired due to Fees

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Alexopoulos, Nicolaos G., Kyriazidou, Chryssoula A.
• Primary Examiner(s): Peng, Charlie
• Assistant Examiner(s): Radkowski, Peter
• Application Number:
  US13/037,236
• Publication Number:
  US 20110248180A1
• Time in Patent Office: 995 Days
• Field of Search: 385129-132, 385/31, 335/306, 343/909, 250/396.R, 333/219
• US Class Current: 385/31
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 15/0026 said selective devices having a stacked geometry or having multiple layers
• CPC Class Codes: H01Q 15/006 Selective devices having photonic band gap materials or materials of which the material properties are frequency dependent, e.g. perforated substrates, high-impedance surfaces
• CPC Class Codes: H01Q 15/0066 said selective devices being reconfigurable, tunable or controllable, e.g. using switches
• CPC Class Codes: H01Q 15/0093 having a fractal shape
• CPC Class Codes: H01Q 19/10 using reflecting surfaces

Abstract

A projected artificial magnetic mirror (PAMM) waveguide includes a substrate, metal patches, a metal backing, multiple dielectric materials, and a waveguide area. The metal patches are on a first layer of a substrate and the metal backing is on a second layer of the substrate. The first dielectric material is between the first and second layers of the substrate. The metal patches are electrically coupled to the metal backing to form an inductive-capacitive network that substantially reduces surface waves along a surface of the substrate within a given frequency band. The second dielectric material juxtaposed to the metal patches, where the waveguide area is between the second and third dielectric materials and includes the surface of the substrate. The inductive-capacitive network, the second dielectric material, and/or the third dielectric material facilitate confining an electromagnetic signal within the waveguide area.

Claims

1. A projected artificial magnetic mirror (PAMM) waveguide comprises:

a plurality of metal patches, wherein a first layer of a substrate is on a first side of the plurality of metal patches;

a metal backing on a second layer of the substrate;

a first dielectric material between the first and second layers of the substrate, wherein the plurality of metal patches is electrically coupled to the metal backing to form an inductive-capacitive network that substantially reduces surface waves along a surface of the substrate within a given frequency band;

a second dielectric material juxtaposed to a second side of the plurality of metal patches;

a third dielectric material; and

a waveguide area formed between the second and third dielectric materials and including the surface of the substrate, wherein at least one of the inductive-capacitive network, the second dielectric material, and the third dielectric material facilitates confining an electromagnetic signal within the waveguide area.

2. The PAMM waveguide of claim 1, wherein the waveguide area comprises:

a first connection on a third layer of the substrate that is on the surface of the substrate; and

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections.

3. The PAMM waveguide of claim 1, wherein the waveguide area comprises at least one of:

air as a waveguide dielectric; and

a fourth dielectric material as the waveguide dielectric.

4. The PAMM waveguide of claim 1, wherein the waveguide area comprises:

a first connection on a third layer of the substrate that is on the surface of the substrate;

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections; and

a fourth dielectric material on the third layer between the first and second connections.

5. The PAMM waveguide of claim 1, wherein the waveguide area comprises:

a fourth dielectric having an air section;

a first connection on a third layer of the substrate that is on the surface of the substrate;

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections and wherein the first and second connections are proximally positioned in the air section.

6. The PAMM waveguide of claim 1, wherein a metal patch of the plurality of metal patches comprises at least one of:

a microstrip;

a coil;

a concentric spiral coil;

an eccentric spiral coil;

a modified Polya curve metal trace;

a plurality of metal segments and a plurality of switching elements.

7. A projected artificial magnetic mirror (PAMM) waveguide comprises:

a first projected artificial magnetic mirror (PAMM) assembly on a first set of layers of a substrate to form a first inductive-capacitive network that substantially reduces surface waves along a first surface of the substrate within a first given frequency band;

a second PAMM assembly on a second set of layers of the substrate to form a second inductive-capacitive network that substantially reduces surface waves along a second surface of the substrate within a second given frequency band; and

a waveguide area between the first and second PAMM assemblies, wherein an electromagnetic signal is substantially confined within the waveguide area.

8. The PAMM waveguide of claim 7, wherein the first PAMM assembly comprises:

a plurality of metal patches on a first layer of the first set of layers;

a metal backing on a second layer of the first set of layers; and

a dielectric material between the first and second layers of the first set of layers, wherein a metal patch of the plurality of metal patches includes at least one of;

a microstrip;

a coil;

a concentric spiral coil;

an eccentric spiral coil;

a modified Polya curve metal trace;

a plurality of metal segments and a plurality of switching elements.

9. The PAMM waveguide of claim 7, wherein the second PAMM assembly comprises:

a plurality of metal patches on a first layer of the second set of layers;

a metal backing on a second layer of the second set of layers; and

a dielectric material between the first and second layers of the second set of layers, wherein a metal patch of the plurality of metal patches includes at least one of;

a microstrip;

a coil;

a concentric spiral coil;

an eccentric spiral coil;

a modified Polya curve metal trace;

a plurality of metal segments and a plurality of switching elements.

10. The PAMM waveguide of claim 7 further comprises:

the first given frequency band having a frequency range that is at least one of;

substantially similar to a frequency range of the second given frequency band, substantially overlaps the frequency range of the second given frequency band, and substantially non-overlapping with the frequency range of the second given frequency band.

11. The PAMM waveguide of claim 7, wherein the waveguide area comprises:

a first connection on a third layer of the substrate that is within the waveguide area; and

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections.

12. The PAMM waveguide of claim 7, wherein the waveguide area comprises at least one of:

air as a waveguide dielectric; and

a fourth dielectric material as the waveguide dielectric.

13. The PAMM waveguide of claim 7, wherein the waveguide area comprises:

a first connection on a third layer of the substrate that is within the waveguide area;

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections; and

a fourth dielectric material on the third layer between the first and second connections.

14. The PAMM waveguide of claim 7, wherein the waveguide area comprises:

a fourth dielectric having an air section;

a first connection on a third layer of the substrate and is within the air section;

a second connection on the third layer of the substrate and is within the air, section wherein the electromagnetic signal is communicated between the first and second connections.

15. A projected artificial magnetic mirror (PAMM) waveguide comprises:

a first projected artificial magnetic mirror (PAMM) assembly on a first layer of a substrate, wherein the PAMM assembly includes a first plurality of metal patches;

a metal backing on a second layer of the substrate;

a first dielectric material between the first and second layers of the substrate, wherein the plurality of metal patches is electrically coupled to the metal backing to form an inductive-capacitive network that substantially reduces surface waves along a surface of the substrate within a given frequency band;

a second dielectric material juxtaposed to the plurality of metal patches;

a third dielectric material; and

a waveguide area between the second and third dielectric materials and including the surface of the substrate, wherein at least one of the inductive-capacitive network, the second dielectric material, and the third dielectric material facilitates confining an electromagnetic signal within the waveguide area.

16. The PAMM waveguide of claim 15, wherein the waveguide area comprises:

a first connection on a third layer of the substrate that is on the surface of the substrate; and

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections.

17. The PAMM waveguide of claim 15, wherein the waveguide area comprises at least one of:

air as a waveguide dielectric; and

a fourth dielectric material as the waveguide dielectric.

18. The PAMM waveguide of claim 15, wherein the waveguide area comprises:

a first connection on a third layer of the substrate that is on the surface of the substrate;

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections; and

a fourth dielectric material on the third layer between the first and second connections.

19. The PAMM waveguide of claim 15, wherein the waveguide area comprises:

a fourth dielectric having an air section;

a first connection on a third layer of the substrate that is on the surface of the substrate;

a second connection on the third layer of the substrate, wherein the electromagnetic signal is communicated between the first and second connections and wherein the first and second connections are proximally positioned in the air section.

20. The PAMM waveguide of claim 15, wherein a metal patch of the plurality of metal patches comprises at least one of:

a microstrip;

a coil;

a concentric spiral coil;

an eccentric spiral coil;

a modified Polya curve metal trace;

a plurality of metal segments and a plurality of switching elements.