Vivaldi horn antennas incorporating FPS

Patent metadata

Field	Value
Publication number	US-10498040-B2
Application number	US-201816216830-A
Country	US
Kind code	B2
Filing date	Dec 11, 2018
Priority date	Feb 17, 2018
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

Vivaldi tapered slot and Vivaldi horn antennas that feature or include fractal plasmonic surfaces (“FPS”) are described. Vivaldi slot antennas are described which include a conductive surface defining a tapered slot, with the conductive surface including a plurality of fractal resonators which form or constitute a fractal plasmonic surface (FPS). In some embodiments the fractal resonators can be defined by slots. In some embodiments the fractal resonators can include self-complementary features. In exemplary embodiments, two Vivaldi horn antennas may be used for a Vivaldi horn antenna. The two Vivaldi FPS antennas can be arranged in a crossed or cross configuration such that the two antennas are essentially perpendicular to one another and are therefore able to receive and transmit two orthogonal polarizations of radiation. The two antennas can be fed by separate respective feed lines. The two antennas can be mounted inside of a horn or casing.

First claim

What is claimed is:

1. A Vivaldi fractal plasmonic surface (FPS) antenna comprising:
a first conductive surface defining a first tapered slot without conductive material, wherein the conductive surface includes conductive material on opposed first and second sides of the tapered slot; and
a first plurality of fractal cells disposed on the first and second sides of the tapered slot, wherein the first plurality of fractal cells presents a first fractal plasmonic surface (FPS).

2. The antenna of claim 1 , wherein the antenna is configured to operate at a 4G frequency band.

3. The antenna of claim 1 , wherein the antenna is configured to operate at a 5G frequency band.

4. The antenna of claim 1 , wherein the antenna is configured to operate at a 6G frequency band.

5. The antenna of claim 1 , wherein the first plurality of fractal cells includes fractal slots formed in the first and second sides of the first tapered slot.

6. The antenna of claim 1 , wherein the first tapered slot has a logarithmic shape.

7. The antenna of claim 1 , wherein the first tapered slot has an exponential shape.

8. The antenna of claim 1 , wherein the first tapered slot has a parabolic shape.

9. The antenna of claim 1 , wherein the first tapered slot has a hyperbolic shape.

10. The antenna of claim 5 , wherein the first plurality of fractal cells includes fractal slots having a shape of a Koch curve.

11. The antenna of claim 5 , wherein the fractal slots are extend in a direction perpendicular to a longitudinal axis of the first tapered slot.

12. The antenna of claim 1 , further comprising:
a second conductive surface defining a second tapered slot without conductive material, wherein the conductive surface includes conductive material on opposed first and second sides of the second tapered slot;
a second plurality of fractal cells disposed the first and second sides of the second tapered slot, wherein the second plurality of fractal cells presents a second fractal plasmonic surface (FPS).

13. The antenna of claim 12 , wherein the first and second conductive surfaces are arranged in a crossed configuration.

14. The antenna of claim 13 , wherein the first and second conductive surfaces are disposed within a conductive casing.

15. The antenna of claim 13 , wherein the first and second conductive surfaces are fed by separate feed lines.

16. The antenna of claim 14 , further comprising one or more additional antennas disposed along sides of the casing.

17. The antenna of claim 13 , wherein the antenna is configured as a multiple-port MIMO system.

18. The antenna of claim 13 , wherein the casing includes a molded or 3D printed dielectric casing.

19. The antenna of claim 1 , wherein the first conductive surface is disposed on a substrate.

Assignees

• Fractal Antenna Systems Inc

Inventors

• Cohen Nathan
• Thistle Ryan
• Earle Daniel
• Salkind Philip
• Shelman-Cohen A J

Classifications

• H01Q15/0093 Primary

  having a fractal shape · CPC title

• H01Q13/085 Primary

  Slot-line radiating ends · CPC title

• H01Q21/064

  using horn or slot aerials (slotted waveguides arrays H01Q21/005) · CPC title

• H01Q1/241

  used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence) · CPC title