Electric coupling of a substrate integrated waveguide cavity resonator to a suspended substrate stripline low pass filter for introducing a notch response
US11923589B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 2022 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | May 2, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/107
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A Substrate Integrated Wave (SIW) coupled to a Suspended Substrate Stripline (SSS) filter for introducing a notch response has a substrate having metal layers formed on a top surface and a bottom surface thereof. A filter circuit is formed on the top surface of the substrate. A top ground plate is provided and has an air cavity formed on a bottom surface of the top ground plate. The air cavity on the top ground plate is positioned directly above the filter circuit when the top ground plate is positioned on the top surface of the substrate. A bottom ground plate is provided and has an air cavity formed on a top surface of the bottom ground plate. The air cavity on the bottom ground plate is positioned directly below the filter circuit when the bottom ground plate is positioned on the bottom surface of the substrate. A SIW cavity resonator is coupled to the filter circuit by means of an aperture to create a notch response in the SSS filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.