臺灣博碩士論文加值系統

本文主旨在由含複合材料微帶線衰減常數之量測,找出一種可反推複合材
料導電係數的方法.待測的複合材料放在微帶線介質基板的下方,當成微帶
線的第二層介質,再由這雙層介質的微帶線所量測的S參數得出衰減常數,
這是實驗值,所量測之頻率範圍是50 MHz-10GHz.由理論計算各種導電係數
造成的衰減常數,最後將實驗值和理論值比較,可反推複合材料之導電係
數.並以兩種觀點來比較實驗的結果,一種是假設介電質無損耗,所以實驗
值必需扣除介電質的損耗,另一種是先反推介電質的損耗,再將介電質的損
耗代入理論值,而實驗值不必扣除介電質的損耗,兩種互相吻合.

The main point of this paper is the measurement of the
attenuation of the microstripline that contains composite
material and finding a method for estimating the conductivity
of the composite material.The composite material that is under
test is put under the dielectric slab of the microstripline
,regarded as the second medium .The attenuation constant of
composite material is estimated by the S parameter of the two
layer medium microstripline .It is the experimental value.The
frequency range of the measurement is 50MHz-10GHz.By numerical
method computing the attenuation of composite material of
different conductivities ,we can compare the experimental
values with the theoretical values then estimate the
conductivity of of the composite material.