Communications: radio wave antennas – Antennas – Within conductive apertured wall
Patent
1999-02-25
2000-08-29
Le, Hoanganh
Communications: radio wave antennas
Antennas
Within conductive apertured wall
343700MS, 340635, H01Q 142
Patent
active
061115487
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.
REFERENCES:
patent: 5280243 (1994-01-01), Miller
patent: 5477231 (1995-12-01), Medard
patent: 6014083 (2000-01-01), Bauerschmidt et al.
patent: 6020821 (2000-02-01), Bauerschmidt et al.
Braunlich Christoph
Diessner Armin
Gorablenkow Jorg
Kelch Thomas
Korden Christian
Le Hoang-anh
Siemens AG
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