Electromagnetic bandgap isolation systems and methods
Electromagnetic bandgap isolation systems and methods are provided. In one example, an electromagnetic bandgap isolator device includes a base support having a curved surface. The electromagnetic bandgap isolator device further includes a metamaterial. The metamaterial includes a continuous curved layer in contact with the base support. The metamaterial is configured to absorb energy associated with a frequency range. Related systems and methods are also provided.
1. An electromagnetic bandgap isolator device, comprising:
a base support having a curved surface; and
a metamaterial comprising:
a continuous curved layer in contact with the base support; and
a plurality of grooves defined in the metamaterial, wherein the plurality of grooves are distributed along a width of the metamaterial and extend substantially along a length of the metamaterial, and wherein the metamaterial is configured to absorb energy associated with a frequency range.
2. The electromagnetic bandgap isolator device of claim 1 , wherein the base support has a width, wherein the width of the base support and the width of the metamaterial extends along a direction, wherein the metamaterial comprises a plurality of metamaterial panels coupled to the continuous curved layer and distributed along the width of the base support, wherein adjacent panels of the plurality of metamaterial panels are at least partially separated along the direction by one of the plurality of grooves.
3. The electromagnetic bandgap isolator device of claim 2 , wherein each of the plurality of metamaterial panels comprises:
a plurality of conductive patches arranged in a two-dimensional array; and
a plurality of vias, wherein each via couples a corresponding one of the plurality of conductive patches to the continuous curved layer.
4. The electromagnetic bandgap isolator device of claim 1 , wherein the continuous curved layer comprises a continuous curved conductive layer, wherein the metamaterial further comprises:
a plurality of conductive patches; and
a plurality of vias, wherein each via couples a corresponding one of the plurality of conductive patches to the continuous curved conductive layer;
wherein the frequency range is based on a dimension of the plurality of conductive patches, a distance between adjacent conductive patches of the plurality of conductive patches, and a dimension of the plurality of vias.
5. The electromagnetic bandgap isolator device of claim 1 , further comprising at least one end support attached to the base support, wherein the at least one end support comprises a lip configured to hold the metamaterial in a fixed position, and wherein the energy is an undesired energy.
6. A method of manufacturing the electromagnetic bandgap isolator device of claim 1 , the method comprising:
providing the metamaterial; and
coupling the metamaterial to the curved surface of the base support such that the metamaterial conforms to the curved surface of the base support.
7. The method of claim 6 , further comprising grooving a layer of material having structures thereon to obtain the metamaterial.
8. The method of claim 7 , further comprising coupling at least one end support to the base support to hold the metamaterial in a fixed position, wherein each of the structures comprises:
a conductive patch; and
a via that couples the conductive patch to the continuous curved layer.
9. A radar system comprising the electromagnetic bandgap isolator device of claim 1 , the radar system further comprising:
a transmitter configured to emit a signal, wherein the signal comprises a first portion and a second portion; and
a receiver, wherein:
the electromagnetic bandgap isolator device is disposed between the transmitter and the receiver, and
the electromagnetic bandgap isolator device is configured to absorb the second portion of the signal.
10. A method of manufacturing the radar system of claim 9 , the method comprising:
providing the transmitter and the receiver; and
disposing the electromagnetic bandgap isolator device between the transmitter and the receiver.
11. A method of using the electromagnetic bandgap isolator device of claim 1 , the method comprising:
emitting a signal using a transmitter antenna, wherein the signal comprises a first portion and a second portion; and
absorbing, using the electromagnetic bandgap isolator device, the second portion of the transmitter antenna to prevent coupling of the second portion into a receiver antenna.
12. The method of claim 11 , wherein the first portion is associated with a main lobe and one or more side lobes of the transmitter antenna and the second portion is associated with one or more additional side lobes of the transmitter antenna.
13. A radar system comprising:
a transmitter configured to emit a signal, wherein the signal comprises a first portion and a second portion;
a receiver; and
an electromagnetic bandgap isolator device disposed between the transmitter and the receiver, wherein the electromagnetic bandgap isolator device is configured to absorb the second portion of the signal to prevent coupling of the second portion into the receiver, wherein the electromagnetic bandgap isolator device comprises a metamaterial having a plurality of grooves defined therein, wherein the plurality of grooves are distributed along a width of the metamaterial and extend substantially along a length of the metamaterial.
14. The radar system of claim 13 , wherein the first portion is associated with a main lobe and one or more side lobes of the transmitter and the second portion is associated with one or more additional side lobes of the transmitter.
15. The radar system of claim 13 , wherein the electromagnetic bandgap isolator device comprises:
a base support having a curved surface,
wherein the metamaterial further comprises:
a continuous curved layer in contact with the base support, wherein the second portion of the signal has a frequency within a stop band of the metamaterial, wherein the continuous curved layer comprises a continuous curved conductive layer;
a plurality of conductive patches; and
a plurality of vias, wherein each via couples a corresponding one of the plurality of conductive patches to the continuous curved conductive layer.
16. A method comprising:
emitting, by a transmitter, a first signal comprising a first portion and a second portion;
receiving, by a receiver, a second signal, wherein the second signal is based on a reflection of the first portion by an object; and
absorbing, by an electromagnetic bandgap isolator device, the second portion of the first signal to prevent coupling of the second portion into the receiver, wherein the electromagnetic bandgap isolator device comprises a metamaterial having a plurality of grooves defined therein, and wherein the plurality of grooves are distributed along a width of the metamaterial and extend substantially along a length of the metamaterial.
17. The method of claim 16 , wherein the first portion is associated with a main lobe of the transmitter and one or more side lobes of the transmitter and the second portion is associated with one or more additional side lobes of the transmitter.
18. The electromagnetic bandgap isolator device of claim 1 , wherein the plurality of grooves extend substantially along an entirety of the length of the metamaterial.
19. The electromagnetic bandgap isolator device of claim 2 , wherein a first metamaterial panel of the plurality of metamaterial panels is adjacent to only one of the plurality of grooves, wherein a second metamaterial panel of the plurality of metamaterial panels is adjacent to only one of the plurality of grooves, and wherein each remaining metamaterial panel of the plurality of metamaterial panels is adjacent to two of the plurality of grooves.
20. The electromagnetic bandgap isolator device of claim 2 , wherein the metamaterial further comprises a plurality of portions disposed on the continuous curved layer, and wherein each of the plurality of portions is between and coupled to a respective pair of adjacent panels of the plurality of metamaterial panels.