Resonator-based, surface-condition sensor

Details Resonator-based, surface-condition sensor Resonator-based, surface-condition sensor

1995-09-21

1997-12-09

Kashnikow, Andres

Aeronautics and astronautics

Aircraft structure

Ice prevention

340582, B64D 1900

Patent

active

056951558

ABSTRACT:
A sensor is provided for detecting the presence of dielectric media, e.g., ice. The sensor includes a plurality of microstrip resonators which are positioned for electromagnetic coupling with a microstrip transmission line. The resonators produce amplitude minima in a radio-frequency signal that is carried over the transmission line. The resonance of the resonators changes in response to the addition of a dielectric coating. Each resonator can be configured with a different resonant frequency which serves as a signature that identifies the respective resonator's position. The sensor has a thin aerodynamic profile, can conform to nonplanar surfaces and its installation requires no intrusion into an aircraft skin.

REFERENCES:
patent: 2419266 (1947-04-01), Kliever et al.
patent: 3134563 (1964-05-01), Stuetzer
patent: 4054255 (1977-10-01), Magenheim
patent: 5005015 (1991-04-01), Dehn et al.
patent: 5474261 (1995-12-01), Stolarczyk et al.

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