US6084503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-interrogated surface-wave technology sensor
Assignee: Siemens AG
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Filing: 1996-03-18
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Granted: 2000-07-04
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Expires: 2016-03-18
Abstract
Abstract Radio-interrogated surface-wave technology sensor, in which the sensitive element (12) is an impedance which is electrically connected as termination to a surface-wave structure (26) of the sensor.
Inventors
- 👤 Werner Ruile
- 👤 Gerd Scholl
- 👤 Thomas Ostertag
- 👤 Leonhard Reindl
- 👤 Valentin Magori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:29
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/75; G01S13/751; G01S13/755
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A sensor arrangement, comprising: a surface-wave arrangement having surface-wave structures and an antenna; a sensitive impedance element as a sensor part, said sensitive element being a resistive element, the resistive element being a photoresistor; a radio frequency transmitter and receiver with radio antenna and electronic evaluation device; the impedance element, which is exposable to an effect to be detected by the sensor part, being electrically connected to at least one of the surface-wave structures; and the transmitter being structured for radio transmission of an interrogation pulse and the receiver with its evaluation device being structured for radio reception and for qualitative/quantitative evaluation of a change, influenced by the effect on the impedance element, in the impulse response of the surface-wave arrangement.
Claim 2
Dependent Claim
121 words
A sensor arrangement, comprising: a surface-wave arrangement having surface-wave structures and an antenna; a sensitive impedance element as a sensor part, said sensitive element being a resistive element, the resistive element being a photoresistor; a radio frequency transmitter and receiver with radio antenna and electronic evaluation device; the impedance element, which is exposable to an effect to be detected by the sensor part, being electrically connected to at least one of the surface-wave structures; and the transmitter being structured for radio transmission of an interrogation pulse and the receiver with its evaluation device being structured for radio reception and for qualitative/quantitative evaluation of a change, influenced by the effect on the impedance element, in the impulse response of the surface-wave arrangement.
Claim 3
Dependent Claim
115 words
A sensor arrangement, comprising: a surface-wave arrangement having surface-wave structures and an antenna; a sensitive impedance element as a sensor part, the sensitive element being a variable-capacitance diode; a radio frequency transmitter and receiver with radio antenna and electronic evaluation device; the impedance element, which is exposable to an effect to be detected by the sensor part, being electrically connected to at least one of the surface-wave structures; and the transmitter being structured for radio transmission of an interrogation pulse and the receiver with its evaluation device being structured for radio reception and for qualitative/quantitative evaluation of a change, influenced by the effect on the impedance element, in the impulse response of the surface-wave arrangement.
Claim 4
Dependent Claim
115 words
A sensor arrangement, comprising: a surface-wave arrangement having surface-wave structures and an antenna; a sensitive impedance element as a sensor part, the sensitive element being a variable-capacitance diode; a radio frequency transmitter and receiver with radio antenna and electronic evaluation device; the impedance element, which is exposable to an effect to be detected by the sensor part, being electrically connected to at least one of the surface-wave structures; and the transmitter being structured for radio transmission of an interrogation pulse and the receiver with its evaluation device being structured for radio reception and for qualitative/quantitative evaluation of a change, influenced by the effect on the impedance element, in the impulse response of the surface-wave arrangement.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-07-04 | 2004-01-03 | 2004-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-04 | 2008-01-03 | 2008-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-04 | 2012-01-03 | 2012-07-04 | $7700.00 | Window Closed / Lapsed |