Patent ID: 9673027
Date: 2017-06-06
CPC Classifications: H01J,H01L

Claim:
1. A test apparatus of testing a high frequency voltage dependency of an impedance on a test object having a capacitive or inductive impedance, the test apparatus comprising: a high frequency power source unit configured to output a high frequency wave having a predetermined frequency in a variable envelope; a control unit configured to control the high frequency power source unit so as to output a high frequency pulse having an envelope portion increasing in a reversed taper shape in a predetermined section on a time axis; a matching unit configured to establish an impedance matching between the high frequency power source unit and the test object; and a monitor unit configured to monitor an envelope waveform of a high frequency voltage output from the matching unit and applied to the test object for a pulse duration of the high frequency pulse according to the high frequency pulse output from the high frequency power source unit; and wherein the monitor unit is further configured to determine whether the test object withstands the high frequency voltage applied thereto without causing an insulation failure or a dielectric breakdown in response to a determination that the envelope waveform of the high frequency voltage applied to the test object is maintained in a same envelope waveform as the high frequency pulse output from the high frequency power source unit and has a rhomboid waveform on the time axis.