Patent ID: 8058892

Claim:
A radiofrequency contactor for inspecting electrical characteristics of a radiofrequency semiconductor device having a radiofrequency signal electrode and a ground electrode, the radiofrequency contactor comprising: a testing circuit board of a microstrip line structure having a dielectric substrate, a lower surface ground conductor on a lower surface of the dielectric substrate, and a radiofrequency signal wiring conductor on an upper surface of the dielectric substrate; a radiofrequency signal pin contactor located on the upper surface of the dielectric substrate and connected to the radiofrequency signal wiring conductor; a ground block located on the upper surface of the dielectric substrate and spaced apart from the radiofrequency signal wiring conductor and the radiofrequency signal pin contactor, the ground block being connected to the lower surface ground conductor; and a first side ground conductor and a second side ground conductor located on the upper surface of the dielectric substrate and spaced apart from the radiofrequency signal wiring conductor and the radiofrequency signal pin contactor, the first side ground conductor and the second side ground conductor being connected to the ground block, wherein a radiofrequency signal is sent from the radiofrequency signal pin contactor to the radiofrequency signal electrode of the radiofrequency semiconductor device or received by the radiofrequency signal pin contactor from the radiofrequency signal electrode of the radiofrequency semiconductor device in an inspection, the ground block is conductive to the ground electrode of the radiofrequency semiconductor device in the inspection, the first side ground conductor is located on the upper surface of the dielectric substrate away from the radiofrequency signal pin contactor in a direction perpendicular to a direction in which the ground block and the radiofrequency signal pin contactor are opposed to each other, and the second side ground conductor is located on the upper surface of the dielectric substrate, across the radiofrequency signal pin contactor from the first side ground conductor.