Patent ID: 6242930
Filing Date: 2001-06-05
Classification: G01R

Abstract:
A high-frequency probe that performs high-frequency measurement by contacting one end part to electrodes of a device-under-test and connecting an opposite end part to an external measuring instrument with electrical conductivity, said high-frequency probe comprising an end unit detachable from the probe, said end unit comprising:a coaxial inner conductor that has an end part serving as an electrode contacting end part which contacts and electrically conducts to signal electrodes of a device-under-test;a coaxial outer conductor that encloses a central part of said coaxial inner conductor while leaving said coaxial inner conductor exposed at both ends thereof, and which is flexible in at least a direction of contacting the device-under-test;a dielectric holding said coaxial inner conductor at a position along a central axis of said coaxial outer conductor;two ground plates positioned in parallel to said electrode contacting end part on both sides of said coaxial inner conductor, which contact and electrically conduct to the outside of said coaxial outer conductor, and are spaced apart at a sufficient width for positioning said coaxial outer conductor therebetween, each ground plate comprising a branch part having an elastic construction at a central part of said ground plate;a respective central guide supporting the central part of said each ground plate by contacting said branch part; anda base guide that presses and supports an end part opposite to an end part at which said ground plates contact the device-under-test,wherein said ground plates generate contact pressure against ground electrodes on the device-under test by means of the elastic construction of said branch parts when the corresponding end part of each ground plate contacts the device-under-test.