Patent ID: 7595650

Claim:
A magnetic field probe apparatus comprising a probe element for detecting the magnetic field generated by a measurement object; at least a pair of transmission lines connected with each other via a load element across which a voltage is developed or in which a current is induced, in response to the detection of the magnetic field by means of the probe element; and a control device for controlling the position of the probe element with respect to the measurement object; wherein the probe element includes at least one conductor line having both its ends extending in the direction opposite to that direction in which the probe element approaches the measurement object under the control of the control device for measurement; and at least one end of the one conductor line is disposed opposite to and separated at a distance from, one of the transmission lines in an area remote from the measuring portion of the probe element so that electric capacitance may be formed between the one end of the one conductor line and the one of the transmission lines.