Title :
A leaky stripline moisture sensor
Author_Institution :
Dept. of Electr. Eng., South Alabama Univ., Mobile, AL, USA
fDate :
8/1/1992 12:00:00 AM
Abstract :
A transmission line which excludes the ground plane has been designed using a conformal mapping technique. It is shown that by excluding the ground plane, the main field is the stray or fringing field, and hence the line can be effectively used as a leaky transmission line. A 50-Ω three-strip line was constructed and tested experimentally using a time-domain reflectometer and proved to be adequate as an immersion-type moisture sensor for wheat samples
Keywords :
electric sensing devices; moisture measurement; strip line components; 50 ohm; conformal mapping; fringing field; ground plane; immersion sensor; leaky stripline moisture sensor; stray field; time-domain reflectometer; transmission line; wheat; Coaxial cables; Conformal mapping; Impedance; Moisture; Permittivity; Stripline; Strips; Testing; Time domain analysis; Transmission lines;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
