Dielectric resonators and circuits made therefrom
US7310031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2002 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Apr 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2084
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A dielectric resonator having variable cross-section, preferably varying monotonically, and, most preferably, the resonator being in the shape of a truncated cone. Such shapes displace the H11 mode from the TE mode in the longitudinal direction of the cone. Truncating the cone to eliminate the portion of the cone where the H11 mode exists, virtually eliminates the H11 mode. A circuit comprising a plurality of these resonators may be arranged in an enclosure with each resonator longitudinally inverted relative to adjacent resonator(s) to provide a compact design with enhanced coupling and adjustability. A spiral coupling loop provides high magnetic flux in a small physical volume for coupling energy into or out of the circuit. Alternately, the resonator can coupled to a microstrip by placing the resonator upside-down near the microstrip, whereby the TE mode is immediately above the microstrip, providing enhanced coupling there between.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.