High efficiency single port resonant line

• US 20040000975A1
• Filed: 06/27/2002
• Published: 01/01/2004
• Est. Priority Date: 06/27/2002
• Status: Active Grant

• Current Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Pike, Randy T., Killen, William D.
• Granted Patent: US 6,727,785 B2
• Time in Patent Office: Days
• US Class Current: 333/219
• CPC Class Codes: H01P 7/082 Microstripline resonators H01P7/088 takes precedence
• CPC Class Codes: H01P 7/084 Triplate line resonators H01P7/088 takes precedence
• CPC Class Codes: H05K 1/0239 Signal transmission by AC coupling
• CPC Class Codes: H05K 1/024 Dielectric details, e.g. changing the dielectric material around a transmission line
• CPC Class Codes: H05K 1/162 incorporating printed capacitors
• CPC Class Codes: H05K 2201/0187 with regions of different dielectrics in the same layer, e.g. in a printed capacitor for locally changing the dielectric properties
• CPC Class Codes: H05K 2201/0715 provided by an outer layer of PCB

Abstract

A printed circuit for processing radio frequency signals. The printed circuit includes a substrate. The substrate can be a meta material and can include at least one dielectric layer. The dielectric layer can have a first set of dielectric properties over a first region and a second set of dielectric properties over a second region. The dielectric permittivity and/or magnetic permeability of the second set of dielectric properties can be different than the first set of dielectric properties. The printed circuit also can include a single port resonant line and a ground coupled to the substrate. The dielectric properties can be controlled to adjust the size of the resonant line. The dielectric properties also can be controlled to adjust an impedance, quality factor and/or capacitance on the resonant line. Resonant characteristics of the resonant line can be distributed through the substrate.

Claims

1. A printed circuit for processing radio frequency signals, comprising:

a substrate where said circuit can be placed, said substrate including at least one dielectric layer, said dielectric layer having a first set of dielectric properties over a first region, and at least a second set of dielectric properties over a second region, said second set of dielectric properties being different than said first set of dielectric properties;

at least one ground coupled to said substrate; and

,

a single port resonant line, said single port resonant line coupled to said second region.

2. The circuit of claim 1 wherein said second set of dielectric properties is controlled to reduce a size of said single port resonant line.

3. The circuit of claim 1 wherein at least one resonant characteristic of said single port resonant line is distributed through said substrate.

4. The circuit of claim 1 wherein said second set of dielectric properties comprises at least one of a second permittivity and a second permeability.

5. The circuit of claim 4 wherein said second permeability is higher than a first permeability associated with said first set of dielectric properties.

6. The circuit of claim 4 wherein said second permittivity is higher than a first permittivity associated with said first set of dielectric properties.

7. The circuit of claim 1 wherein said substrate comprises meta material.

8. The circuit of claim 1 wherein an end of said single port resonant line is electrically connected to said ground.

9. The circuit of claim 1 wherein said single port resonant line is electrically open with respect to ground.

10. The circuit of claim 1 wherein said second region comprises a plurality of sub-regions.

11. The circuit of claim 10 wherein at least one of a permeability and a permittivity varies among said plurality of sub-regions.

12. The circuit of claim 1 wherein said second set of dielectric properties is controlled to reduce a propagation velocity of a signal on said single port resonant line.

13. The circuit of claim 1 wherein said second set of dielectric properties is controlled to adjust a resonance on said single port resonant line.

14. The circuit of claim 1 wherein said second set of dielectric properties is controlled to adjust an amplitude of at least one of a voltage maxima and a voltage minima measured on said single port resonant line.

15. The circuit of claim 1 wherein said second set of dielectric properties is controlled to adjust an impedance measured on said single port resonant line.

16. The circuit of claim 1 wherein said second set of dielectric properties is controlled to adjust a capacitance between said single port resonant line and another structure.

17. The circuit of claim 1 wherein said second set of dielectric properties and said second set of dielectric properties is controlled to adjust a quality factor (Q) of said single port resonant line.