Switchable planar high frequency resonator and filter

US5912472A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Voigtlaender · Schallstadt, DE
• Claus Schmidt · Regensburg, DE
• Matthias Klauda · Erlangen, DE
• Christian Neumann · Hungen, DE

Key dates

• Filing date: May 15, 1997
• Grant date: Jun 15, 1999
• Expiry date: May 15, 2017

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01P7/082
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A portion of the superconductor in a planar resonator made from that superconductor can be switched into the normally conducting state so that its effective lateral dimensions are changed. The special advantage of this planar resonator is that a switchable filter can be constructed very economically based on its planar resonator structure. Since no perturbing bodies are necessary in the field, the invention points the way to a switchable filter with reduced high frequency losses.