Question

what is probe coupling?​

Answer 1

Explanation:

In the case of longitudinal oscillations on the conducting strip, depending on the strip length and the number of standing half waves, it is possible that a voltage zero might appear directly underneath one or both of the coupling probes. Since the coupling is capacitive in nature, a voltage zero at the probe position would not allow any energy to be coupled from the excitation probe to the test line or from the test line to the detection probe.

Microwave dielectric property measurements