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Theory and Operation of RF Proximity Sensing Devices.

Authors
Balanis-CA; Corum-JF
Source
NIOSH 1981 Jul:39 pages
Link
NIOSHTIC No.
00120699
Abstract
The operation of proximity sensing devices is reviewed. Basic concepts of electrical capacitance, potential distribution, electromagnetic field structure, and electrical bridge balancing are discussed. Capacitance changes and modeling for activation of proximity sensing devices are described. Mathematical expressions for the capacitance and potential distribution of sensor configurations are developed, and potential distributions as a function of geometry are derived. General configurations of equipotential lines are compared. Physical characteristics of commercially available coaxial cables are presented. Recommendations are made for tune up procedures, antenna considerations, electronics, and electromagnetic compatibility. The authors recommend that uniform test procedures and federal standards be developed for radio frequency proximity sensors.
Keywords
NIOSH-Contract; Physical-properties; Radiation-detection; Radiation-detectors; Electrical-equipment;
Publication Date
19810722
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
Task-Order-80-11659
Source Name
NIOSH Task Order 80-11659, 39 pages, 6 references
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