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技術學刊 EIScopus

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篇名 橋式串接高頻電容值量測電路
卷期 25:4
並列篇名 A bridge type serical-connected high frequency capacitance measurement circuit
作者 王姵琪曾振東
頁次 261-267
關鍵字 傳輸線橋式電容量測transmission linebridge typecapacitance measurementeEIScopusTSCI
出刊日期 201012

中文摘要

本文提出一種傳輸線的橋式結構,可應用在表面黏著元件電容值的量測。電路結構因具有對稱性,電路特性以奇偶模分析方式進行以求得。文中並分析不同阻抗及電氣長度之傳輸線和負載電容值,對散射參數S11、S21的影響。本電路可應用在高頻的電容值量測。電路特性並以電磁模擬軟體Microwave Office V2.66及IE3D 進行模擬驗證且使用MATLAB驗證推導公式之正確性,
實際電路以FR-4 雙面板製作。由模擬與實際電路量測結果顯示,本電容值測定器之模擬與量測結果均具有良好的一致性。

英文摘要

A novel transmission line bridge planar type circuit for surface mount
device capacitance measurement in microwave frequency bands is
proposed. The circuit possesses a symmetrical structure and can be used
for even-odd mode analysis to obtain two-port scattering parameters in
terms of physical parameters. The influences of various transmission line
impedance values, electrical lengths and load capacitances on the scattering parameters are widely investigated. The analysed results are helpful for actual circuit design. One prototype circuit has been designed at 1 GHz,simulated by Microwave Office V2.66 and IE3D microwave simulators,and fabricated on FR-4 substrate. The simulated and experimental results show good agreement in the frequency of interest.

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