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dc.contributor.author黃正宏en_US
dc.contributor.authorCheng-Hung Huangen_US
dc.contributor.author彭松村en_US
dc.contributor.author黃瑞彬en_US
dc.contributor.authorSong-Tsuen Pengen_US
dc.contributor.authorRuey Bing Hwangen_US
dc.date.accessioned2014-12-12T01:47:00Z-
dc.date.available2014-12-12T01:47:00Z-
dc.date.issued2003en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#GT009113604en_US
dc.identifier.urihttp://hdl.handle.net/11536/46924-
dc.description.abstract在這篇論文中,我們發展了一個電子式可調帶通濾波器,這濾波器由開迴路環形共振器和varactor所構成。我們經由電路模擬來計算帶通濾波器的介入和反射損失,此外,我們也完成了實驗,且由模擬和量測相近的結果,我們更可確定電路模型的正確性。另外,在共振器上的varactor是用來調整共振器的共振頻率,如預期的,由varactor所造成的電抗確實的影響到共振器的總電感和電容值,值得一提的是,不僅濾波器的中心頻率可以被改變,這電抗是電感性或是電容性也將決定濾波器的中心頻率將大於或小於未加varactor時濾波器的中心頻率,利用這個結果,我們也實現了一個寬的可調頻率帶通濾波器,雖然不理想之二極體的Q值增加了濾波器的介入損失,但這原理是被證明可有效的用於調變帶通濾波器的中心頻率。zh_TW
dc.description.abstractIn this thesis, we developed an electrically tunable band-pass filter. The filter contains multiple sections of open-loop ring resonators and varactors. For the band-pass filter, the scattering parameters, including the insertion and return losses, has been calculated by means of electric circuit simulation. In addition, we have also carried out the experimental studies. The excellent agreements between simulated and measured results prove the accuracy of the established circuit model. Moreover, the varactor was added to the resonator to adjust its resonant frequency. As expected, the reactance introduced by the varactor indeed affects the net inductance and capacitance obviously. It is noted that, not only the shift with the center frequency, the inductive or capacitive of the reactance can also provide a parameter to switch its frequency toward the two directions away from the one without varactor. As a consequence, a wideband tunable band-pass filter is achieved. Although the bad quality factor with the diode strongly increases the insertion loss, this concept was proved to be available for effectively tuning the center frequency of such a class of band-pass filter.en_US
dc.language.isoen_USen_US
dc.subject帶通濾波器zh_TW
dc.subject開迴路環形共振器zh_TW
dc.subject耦合係數zh_TW
dc.subject外接品質因數zh_TW
dc.subjectband-pass filteren_US
dc.subjectopen loop ring resonatoren_US
dc.subjectcoupling coefficienten_US
dc.subjectexternal quality factoren_US
dc.title應用於無線通訊系統之電子式可調帶通濾波器zh_TW
dc.titleThe Electrically Tunable Band-pass Filter with Compact Size and High Selectivity for Wireless Communicationen_US
dc.typeThesisen_US
dc.contributor.department電信工程研究所zh_TW
Appears in Collections:Thesis


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