Structures for cross-talk reduction
Systems and apparatuses for electromagnetic communications are provided. One of the apparatuses includes a housing portion for an electronic device, wherein the housing portion comprises: a first region formed from a first material; and a second region comprising an arrangement of structures formed from the first material and a second material, wherein the arrangement of structures reduce propagation of electromagnetic radiation propagating through the second region.
1. An apparatus comprising:
a communications module comprising two or more integrated circuit packages each integrated circuit package including at least one transmitter, receiver, or transceiver; and
a device housing portion for an electronic device, wherein the housing portion comprises a planar portion substantially parallel to a communications module of the device, the planar portion of the housing comprising:
a first region formed from a first material and configured to be in a transmission path of a first electromagnetic signal, associated with a first integrated circuit package, when transmitted to or from the device;
a second region formed from the first material and configured to be in the transmission path of a second electromagnetic signal, associated with a second integrated circuit package, when transmitted to or from the device; and
a third region comprising an arrangement of structures formed from a plurality of segments of the first material and a plurality of segments of a second material, wherein the first material has a first dielectric constant that allows propagation of electromagnetic signals and the second material has a second dielectric constant, wherein the arrangement of the first material and the second material provides a bandpass filter of electromagnetic signals.
2. The apparatus of claim 1 , wherein the second material is an absorptive material.
3. The apparatus of claim 1 , wherein the width of the second material is selected based on a wavelength of the first electromagnetic signal.
4. The apparatus of claim 1 , wherein the width of the first material is selected based on a wavelength of the first electromagnetic signal.
5. The apparatus of claim 1 , wherein the width of the second material varies through the arrangement of structures to provide a wider frequency range of filtering.
6. The apparatus of claim 1 , wherein the magnitude of the electromagnetic signal filtering depends on the number of segments of the second material in the arrangement of structures.
7. The apparatus of claim 1 , wherein a thickness of the second dielectric material is less than a thickness of the planar portion of the housing.
8. The apparatus of claim 1 , wherein the arrangement of structures comprises a plurality of concentric circles of the first material and the second material, respectively, positioned relative to the first region.
9. The apparatus of claim 1 , wherein forming the arrangement of structures comprises removing portions of the planar portion of the housing and filling the removed portions with the second material.
10. An apparatus, comprising:
a device housing portion for an electronic device, wherein the housing portion comprises a planar portion substantially parallel to a communications module of the device, the planar portion of the housing comprising:
a first region formed from a first material and configured to be in a transmission path of electromagnetic signals, associated with a corresponding integrated circuit packages, when transmitted to or from the device;
a second region comprising an arrangement of structures formed from a plurality of segments of the first material and a plurality of segments of a second material, wherein the first material has a first dielectric constant that allows propagation of electromagnetic signals and the second material has a second dielectric constant, wherein the arrangement of the first material and the second material provides a bandpass filter of electromagnetic signals.
11. The apparatus of claim 10 , wherein the second material is an absorptive material.
12. The apparatus of claim 10 , wherein the width of the second material is selected based on a wavelength of the electromagnetic signals.
13. The apparatus of claim 10 , wherein the width of the first material is selected based on a wavelength of the electromagnetic signals.
14. The apparatus of claim 10 , wherein the width of the second material varies through the arrangement of structures to provide a wider frequency range of filtering.
15. The apparatus of claim 10 , wherein the magnitude of the electromagnetic signal filtering depends on a number of segments of the second material in the arrangement of structures.
16. The apparatus of claim 10 , wherein a thickness of the second dielectric material is less than a thickness of the planar portion of the device housing portion.
17. The apparatus of claim 10 , wherein the arrangement of structures comprises a plurality of concentric circles of the first material and the second material, respectively, positioned relative to the first region.
18. The apparatus of claim 10 , wherein forming the arrangement of structures comprises removing portions of the planar portion of the housing and filling the removed portions with the second material.