諧振器品質(zhì)因數(shù)的精確測試課件

同軸諧振器品質(zhì)因數(shù)的精確測試

－臨界點(diǎn)法品質(zhì)因數(shù)定義傳輸式品質(zhì)因數(shù)測試－電路模型傳輸式品質(zhì)因數(shù)測試－QL和Q0的關(guān)系傳輸式品質(zhì)因數(shù)測試－S21傳輸式品質(zhì)因數(shù)測試－Q0反射式品質(zhì)因數(shù)測試－等效電路反射式品質(zhì)因數(shù)測試－臨界點(diǎn)定義反射式品質(zhì)因數(shù)測試－Q圓臨界點(diǎn)法仿真結(jié)果示意圖隨著探針的長度的增加，S11的圓圖軌跡半徑逐漸增大臨界點(diǎn)法實(shí)測結(jié)果示意圖當(dāng)外部耦合非常弱的情況下，S11導(dǎo)納圓已經(jīng)分辨不出臨界點(diǎn)法仿真提取比較（1）腔體尺寸35×35×50，諧振桿φ11×φ8×49，螺釘φ4×6.5，DIN頭，Tap高度25。

Q0

=3959.58@936.36MHzLen(mm)F1(MHz)F2(MHz)F0(MHz)Q0ΔQ0%0.5933.881933.643933.763923.120.921933.344933.106933.2253920.840.982934.521934.282934.43909.381.274934.725934.485934.613893.931.668931.84931.59931.7153726.825.88臨界點(diǎn)法仿真提取比較（3）臨界點(diǎn)法與帶連接器和探針的同軸腔本征模的比較Len(mm)臨界點(diǎn)法本征模ΔQ0%F0(MHz)Q0F0(MHz)Q00.5933.763923.12935.65939290.151933.2253920.84935.77539320.282934.43909.38935.9239280.474934.613893.93935.30938960.058931.7153726.82935.10938021.98臨界點(diǎn)法仿真提取比較（4）臨界點(diǎn)法與同軸諧振器外載Q值的比較Len(mm)臨界點(diǎn)法外載Q值ΔQ0%F0(MHz)Q0F0(MHz)QL0.5933.763923.12934.71715981933.2253920.84934.71115042934.43909.38934.44412994934.613893.93934.0329028931.7153726.82930.53322實(shí)測諧振頻率對(duì)Q0的影響F1(MHz)F2(MHz)F0(MHz)Q0F0模擬(MHz)Q0模擬Q0/

Q0模擬%1825.8861826.31826.094407.6818805304831800.3121800.731800.524304.1918105196821701.4211701.8791701.653711.517345054731601.4241601.941601.68