Patent ID: 6864690

Claim:
Apparatus for obtaining dielectric constant and other measurements of a sample, comprising: an open cavity resonator having a pair of opposed confocal mirrors supplied with microwave energy, with each said mirror operable to provide corresponding microwave output signals for analysis for determination of said dielectric constant and other measurements; a sample holder; a first precision drive unit operably connected to said holder to rotate said holder, with said sample, about a vertical axis; a second precision drive unit operably connected to said holder to tilt said holder, with said sample, relative to said mirrors; a third precision drive unit operably connected to said holder to move said holder, with said sample, along a vertical axis; a fourth precision drive unit operably connected to said holder to move said holder, with said sample, along a first horizontal axis toward and away from a said mirror; a fifth precision drive unit operably connected to said holder to move said holder, with said sample, along a second horizontal axis when in said cavity of said resonator, said second horizontal axis being at a right angle with respect to said first horizontal axis; a bearing slide; said drive units being positioned on, and carried by said bearing slide which is moveable to position said holder into and out of said open cavity resonator.