Microwave bandpass filter comprising a conductive housing with a dielectric resonator therein and including an internal coupling element providing coupling between HEEx and HEEy modes

US10862183B2 · kind B2 · utility

Assignee

• SPINNER GmbH · DE

Inventors

• Kai Numssen · Höhenkirchen-Siegertsbrunn, DE
• Jörn Pfeifer · Munich, DE
• Martin Lorenz · Frankfurt am Main, DE
• Christian Orlob · Bad Aibling, DE
• Christoph Neumaier · Feldkirchen-Westerham, DE
• Natalie Spaeth · Rosenheim, DE

Key dates

• Filing date: Mar 15, 2018
• Grant date: Dec 8, 2020
• Expiry date: May 8, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01P7/105
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A quad-mode microwave or RF bandpass filter comprises a housing of a conductive material defining a cylindrical cavity and containing a cylindrical dielectric resonator defined by a parallel pair of face surfaces. The dielectric resonator is held within the housing between a pair of support plates of a dielectric material. Internal coupling elements are provided above and/or below the dielectric resonator for coupling between resonating modes. Further mode coupling elements are protruding into the housing.