Radiofrequency filter with dielectric element
US9666924B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Sep 27, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radiofrequency filter exhibiting at least one resonant mode comprises: at least one cavity at least partially closed using conductive walls, having a cylindrical outer surface defined by a directing curve described by a generatrix and having a point of symmetry, an axis passing through a point of symmetry and parallel to the generatrix being a longitudinal axis of the cavity. At least one dielectric element is arranged in the cavity and comprises: a first portion having a thickness according to the longitudinal axis and a section according to a plane perpendicular to the longitudinal axis whose vertices are distributed according to a polygon, at least two vertices being short-circuited between them by the conductive walls of the cavity, via an electrical or radiofrequency contact between the vertices and walls, at least one pyramidal portion comprising an apex and a base coinciding with an extreme section of the first portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.