Patent · US Expired

Enclosed power transmission system with a sensor positioned within the enclosure and an antenna assigned to the sensor

US6111548A · kind A · utility

5Cited by

4References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Christoph Braunlich · Königs Wusterhausen, DE
Armin Diessner · Berlin, DE
Jorg Gorablenkow · Berlin, DE
Thomas Kelch · Braunschweig, DE
Christian Korden · Birkenfeld, DE
Klaus Lange · Putzbrunn, DE

Key dates

Filing date	Feb 25, 1999
Grant date	Aug 29, 2000
Priority date	—
Expiry date	Feb 25, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH02B13/065
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Sensors positioned in power transmission systems with tubular enclosures have radio interrogation capabilities. The radio antenna assigned to a sensor is a planar antenna with a radiating element and a conductive baseplate, with the radiating element being designed as a reed that is provided in a self-supporting manner in a recess in the baseplate and is short-circuited to the baseplate at one end. This forms a quarter-wave antenna which can be tuned by using a metal resonating member with a U-shaped cross-section and can be combined with a surface-wave sensor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.