High frequency filter and phased array antenna comprising such a high frequency filter
US11837787B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2019 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Nov 11, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q23/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A high frequency filter comprising a waveguide and at least one resonant cavity is disclosed. The waveguide is a so-called gap waveguide, and comprises a metal or metallized base layer, a lid arranged in parallel with said metal or metallized baser layer, a waveguiding structure in the form of a ridge, a groove or a microstrip line, and an artificial magnetic conductor arranged on said base layer, between the baser layer and the lid, and arranged aligned with said waveguiding structure to prevent waveguide propagation along other directions than along said waveguide structure. The filter further comprises at least one resonant cavity arranged within said baser layer, and extending essentially perpendicular to a plane of said baser layer. The filter may e.g. be used in a phased array antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.