Ceramic block RF filter having a first plurality of through-hole resonators and a second plurality of through-holes for blocking RF signal coupling
US10333191B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Sep 21, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2056
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A ceramic monoblock RF filter for the transmission of an RF signal comprising a block of dielectric material including opposed top and bottom surfaces, opposed longitudinal side surfaces, and opposed transverse side surfaces. A plurality of spaced apart through-hole resonators extend through the block and terminate in openings in the top and bottom surfaces of the block. A second plurality of grounded RF signal blocking through-holes extend through the block and terminate in respective openings in the top and bottom surfaces of the block. The grounded through-holes are located and positioned in a relationship off-set and on opposite sides of the first plurality of through-hole resonators for blocking the coupling of the RF signal between RF signal input/outputs and selected ones of the first plurality of resonators and also between non-adjacent ones of the first plurality of resonators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.