Multilayer metamaterial isolator

• US 20100263199A1
• Filed: 06/23/2010
• Published: 10/21/2010
• Est. Priority Date: 09/30/2008
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Morton, Matthew A., Buell, Kevin, Imholt, Jiyun C.
• Granted Patent: US 8,193,973 B2
• Time in Patent Office: Days
• US Class Current: 29/600
• CPC Class Codes: H01P 1/2005 Electromagnetic photonic bandgaps [EPB], or photonic bandgaps [PBG]
• CPC Class Codes: H01P 1/365 Resonance absorption isolators
• CPC Class Codes: H01Q 1/523 between antennas of an array
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
• CPC Class Codes: Y10T 29/49016 Antenna or wave energy "plumbing" making

Abstract

A method of fabricating an array of radiating elements includes on one layer or surface of a dielectric substrate, forming a first leg of a first resonator loop, on another layer or surface of the dielectric substrate forming a second leg of the first resonator loop between adjacent radiating elements, forming a via through the dielectric substrate, and metallizing the via forming a third leg of the first resonator loop interconnecting the first and second legs.

Claims

1. A method of fabricating an array of radiating elements, the method comprising:

on one layer or surface of a dielectric substrate, forming a first leg of a first resonator loop;

on another layer or surface of the dielectric substrate forming a second leg of the first resonator loop between adjacent radiating elements;

forming a via through the dielectric substrate; and

metallizing the via forming a third leg of the first resonator loop interconnecting the first and second legs.

2. The method of claim 1 in which the adjacent radiating elements are formed on the same layer as the second leg.

3. The method of claim 1 further including fabricating a second resonator loop by:

forming a first leg adjacent the first leg of the first resonator loop,

forming a second leg adjacent the second leg of the first resonator loop, and

forming a third leg extending through the dielectric substrate interconnecting the first and second legs of the second resonator loop.

4. The method of claim 3 further including forming interdigitated spaced fingers of the first and second resonator loops.

5. The method of claim 1 in which the first resonator loop constitutes a unit cell, the method further including forming a strip of adjacent unit cells.