Planar Microwave Sensors for Accurate Measurement of Material Characterization: A Review
Abstract: Microwave sensor is
used in various industrial applications and requires highly accurate measurements
for material properties. Conventionally, cavity waveguide perturbation,
free-spacetransmission, open-ended coaxial probe, and planar transmission line
technique have been used for characterizing materials. However, these planar
transmission lines are often large and expensive to build, further restricting
their use in many important applications. Thus, this technique is cost
effective, easy to manufacture and due to its compact size, it has the
potential to produce sensitivity and a high Q-factor for various materials.
This paper reviews the common characteristics of planar transmission line and discusses
numerous studies about several designs of the microstrip resonator to improve
the sensor performance in terms of the sensitivity and accuracy. This technique
enables its use for several industrialapplications such as agriculture and
quality control. It is believed that previous studies would lead to apromising
solution of characterizing materials with high sensitivity, particularly in
determining a high factor resonator sensor.
Author: Norhanani Abd Rahman
Journal Code: jptkomputergg170045
