Impedance Matching for Long Cables Carrying Ultrasonic Signals.
Abstract
Long coaxial cables, when used for ultrasonic inspection, have been known to produce extraneous signals and attenuate valid signals. In this report, the theory of transmission lines is applied to such cables and is shown to predict the unwanted phenomena. The theory is then applied to the design of matching networks composed of one resistive and one inductive component. A series R-L network placed in parallel with the transducer is shown to produce a satisfactory impedance match, and its performance is demonstrated through experiments on a 1000-foot length of coaxial cable terminated by the network and an ultrasonic transducer (Author).
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1981
- Accession Number
- ADA107935
Entities
People
- John Mittleman