Research on measuring material properties in the band of millimeter wave (MMW)

The theory of a waveguide sample holder in the millimeter waveband is introduced. The authors present a new method for designing the sample holder for measuring material properties. To insert the sample vertically in a regular waveguide sample holder, a dielectric window is adopted to fix the sample which is theoretically analyzed. Polytetrafluorethylene is chosen as the material of the window dielectric with a width of 3 mm and length of 2 mm.<
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