Detunable waveguide antenna assembly

US8436615B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wolfgang Renz · Erlangen, DE
• Karsten Wicklow · Erlangen, DE

Key dates

• Filing date: Jul 8, 2010
• Grant date: May 7, 2013
• Expiry date: Jul 21, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/3685
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A waveguide antenna assembly for a magnetic resonance tomography apparatus, particularly a waveguide antenna assembly that can be detuned for an operation with local coils, is composed of multiple metal surfaces connected by diodes respectively located between the metal surfaces. Only when the diodes are through-connected between these metal surfaces are the surfaces connected with one another in terms of RF signals via these diodes, so the assembly operates as a waveguide antenna. When the diodes are disabled between these metal surfaces, the surfaces are unconnected with one another for RF signals.