Embedded filtering in PCB integrated ultra high speed dielectric waveguides using photonic band gap structures
US10879575B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Jan 30, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0243
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for attenuating crosstalk between dielectric waveguides is provided. A first dielectric waveguide is formed to carry a first frequency band. A first filter is embedded within the first dielectric waveguide to attenuate transmission of a second frequency band through the first dielectric waveguide. The filter comprises alternating sections of a first dielectric material and a second dielectric material having different dielectric constants. The length of each section of the first and second dielectric materials is equal to a quarter of the wavelength of the central frequency of the second frequency band. A second waveguide is formed to carry the second frequency band. A second filter is embedded in the second dielectric waveguide to attenuate transmission of the first frequency band through the second dielectric waveguide. A cladding is disposed between the first and second waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.