# US 2017/0288301 A1 · Anisotropic metamaterials for electromagnetic compatibility

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- Number: US 2017/0288301 A1
- Document ID: US20170288301A1
- Status: Published application
- Kind: A1
- Application number: 15/625,398
- Filed: 2017-06-16
- Published: 2017-10-05
- Earliest claimed: 2014-06-24
- Assignees: Board of Regents, The University of Texas System
- Applicants: Board of Regents, The University of Texas System
- Inventors: Raymond C. Rumpf; Cesar R. Garcia
- Web page: https://patentgrep.com/patent/US20170288301A1

## CPC

- H01Q 15/0086: {said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials}
- H01Q 1/526: {Electromagnetic shields}
- H01Q 1/243: {with built-in antennas}
- H01Q 1/245: {with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure}
- H01Q 3/44: varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q 3/46: Active lenses or reflecting arrays
- H01Q 9/26: with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength (resonant loop antennas H01Q7/00)
- H01Q 15/0006: {Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices (H01Q15/12, H01Q15/22, H01Q15/24 take precedence)}
- H01Q 15/08: formed of solid dielectric material
- H01Q 19/062: {for focusing}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An electromagnetic device includes: a first layer having a first material with a first dielectric constant, the first layer having a plurality of channels or holes filled with a second material with a second dielectric constant that is different from the first dielectric constant; and, a second layer having a plurality of antennas disposed on the first layer. Adjacent ones of the plurality of channels of the first layer have an average spacing therebetween of less than one quarter of an operating wavelength of at least one of the plurality of antennas.

## Claims

### Claim 1

An electromagnetic device, comprising:
a first layer comprising a first material having a first dielectric constant, the first layer comprising a plurality of channels or holes filled with a second material having a second dielectric constant that is different from the first dielectric constant; and
a second layer comprising a plurality of antennas disposed on the first layer;
wherein adjacent ones of the plurality of channels of the first layer have an average spacing therebetween of less than one quarter of an operating wavelength of at least one of the plurality of antennas.

### Claim 2 (depends on 1)

The device of claim 1, wherein the first layer forms a substrate for the plurality of antennas.

### Claim 3 (depends on 1)

The device of claim 1, further comprising a third layer comprising a third material disposed proximate and over the plurality of antennas.

### Claim 4 (depends on 3)

The device of claim 3, wherein the first layer forms a substrate for the plurality of antennas, and the third layer forms an overlayer for the plurality of antennas.

### Claim 5 (depends on 1)

The device of claim 1, wherein some channels of the plurality of channels of the first layer at a first location in the first layer have a spatial orientation different from other channels of the plurality of channels at a second location in the first layer.

### Claim 6 (depends on 1)

The device of claim 1, wherein the first dielectric constant and the second dielectric constant are different with respect to each other.

### Claim 7 (depends on 1)

The device of claim 1, wherein the first dielectric constant is greater than the second dielectric constant.

### Claim 8 (depends on 1)

The device of claim 1, wherein the second dielectric constant is greater than the first dielectric constant.

### Claim 9 (depends on 3)

The device of claim 3, wherein the third material of the third layer has a third dielectric constant, the third layer comprising a plurality of channels or holes filled with a fourth material having a fourth dielectric constant that is different from the third dielectric constant.

### Claim 10 (depends on 9)

The device of claim 9, wherein adjacent ones of the plurality of channels of the third layer have an average spacing therebetween of less than one quarter of an operating wavelength of at least one of the plurality of antennas.

### Claim 11 (depends on 9)

The device of claim 9, wherein adjacent ones of the plurality of channels of the third layer are disposed opposing respective adjacent ones of the plurality of channels of the first layer.

### Claim 12 (depends on 9)

The device of claim 9, wherein the third dielectric constant and the fourth dielectric constant are different with respect to each other.

### Claim 13 (depends on 9)

The device of claim 9, wherein the third dielectric constant is greater than the fourth dielectric constant.

### Claim 14 (depends on 9)

The device of claim 9, wherein the fourth dielectric constant is greater than the third dielectric constant.

### Claim 15 (depends on 10)

The device of claim 10, wherein the plurality of antennas are embedded within the combination of the first layer and the third layer.

### Claim 16 (depends on 1)

The device of claim 1, wherein the second layer further comprises a ground plane disposed between and in direct contact with the first layer and the third layer.

### Claim 17 (depends on 1)

The device of claim 1, wherein the second layer further comprises at least one electrical connector disposed in signal communication with the plurality of antennas.

### Claim 18 (depends on 9)

The device of claim 9, wherein some channels of the plurality of channels of the third layer at a first location in the third layer have a spatial orientation different from other channels of the plurality of channels at a second location in the third layer.

### Claim 19 (depends on 8)

The device of claim 8, wherein the second dielectric constant is greater than 5, and the first dielectric constant is less than 5.

### Claim 20 (depends on 14)

The device of claim 14, wherein the fourth dielectric constant is greater than 5, and the third dielectric constant is less than 5.

### Claim 21 (depends on 1)

The device of claim 1, wherein the first material and the second material of the first layer forms an anisotropic metamaterial.

### Claim 22 (depends on 1)

The device of claim 1, wherein the first material and the second material of the first layer forms a spatially variant anisotropic metamaterial.

### Claim 23 (depends on 9)

The device of claim 9, wherein the third material and the fourth material of the third layer forms an anisotropic metamaterial.

### Claim 24 (depends on 9)

The device of claim 9, wherein the third material and the fourth material of the third layer forms a spatially variant anisotropic metamaterial.

### Claim 25 (depends on 1)

The device of claim 1, wherein the first material and the second material of the first layer forms an all-dielectric metamaterial.

### Claim 26 (depends on 9)

The device of claim 9, wherein the third material and the fourth material of the third layer forms an all-dielectric metamaterial.

### Claim 27 (depends on 9)

The device of claim 9, wherein the first material and the second material of the first layer forms a first all-dielectric metamaterial, and the third material and the fourth material of the third layer forms a second all-dielectric metamaterial.

### Claim 28 (depends on 1)

The device of claim 1, wherein the second layer comprising the plurality of antennas is disposed on the first layer absent an intervening dielectric layer.