Circular waveguide standing wave measurement device for eight mm waveband dielectric measurement

Abstract

The utility model discloses a circular waveguide stationary wave measuring device used to measure 8mm wave band electric medium; the utility model comprises a wave mode converter, a wave mode suppressor and a circular waveguide stationary wave measuring line, all of which are connected with each other in turn; the circular waveguide stationary wave measuring line positioned at the utmost lower part are provided with a fine regulation micrometer, a crude regulation micrometer, a cylinder wall opening circular waveguide, a piston and a circular waveguide from bottom to up; a cylinder wall small hole is provide on a circular waveguide wall. TE01 mode is adopted; the electricity field of a waveguide cylinder wall is zero; the radial gap between a sample and a waveguide wall only induces very small measurement difference; the reduction of wall consumption improves the accuracy of the measurement of medium consumption. The utility model is particularly suitable for a medium resonator material, a steel electric material and a high thermal medium measurement of high dielectric constant number; moreover, a polytetrafluoroethylene thin circular ring which makes the terminal of a sample be nearly in the open circuit situation can be provided on the upper end of the piston, which makes the electromagnetic parameters of a wave absorbing material can be measured more accurately at the same time.

Description

technical field [0001] The invention relates to a circular waveguide standing wave measuring device used for dielectric measurement in the eight millimeter wave band. Background technique [0002] In the microwave frequency band, the electrical parameters of dielectric materials are indispensable data for designing dielectric components, and are the basis for developing corresponding materials and dielectric components, microstrip lines, and microwave integration. For materials with low dielectric constant and medium / low loss, rectangular waveguide standing wave measurement line method, scattering parameter method or TE are widely used at home and abroad. 01l Mode resonator method, and for dielectric resonator materials with high dielectric constant and medium / low loss, TE is widely used at home and abroad in the microwave frequency band up to millimeter wave 011 Die, TE 0m1 mode dielectric resonator method or extracavity perturbation method. Among these methods, the stan...

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Problems solved by technology

Among these methods, the standing wave measurement method is convenient and reliable, but there is no report on the standing wave method that can simultaneously measure low and high dielectric constant materials

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