博碩士論文 101521039 完整後設資料紀錄

DC 欄位 語言
DC.contributor電機工程學系zh_TW
DC.creator韓羽zh_TW
DC.creatorYu Hanen_US
dc.date.accessioned2014-7-25T07:39:07Z
dc.date.available2014-7-25T07:39:07Z
dc.date.issued2014
dc.identifier.urihttp://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=101521039
dc.contributor.department電機工程學系zh_TW
DC.description國立中央大學zh_TW
DC.descriptionNational Central Universityen_US
dc.description.abstract本論文以雙層頻率選擇表面方式在一寬頻吸波器上實現阻抗倒轉器,設計目標為自由空間對負載器進行匹配,選擇兩階之頻率選擇表面進行等效電路設計並以全波模擬軟體與量測實驗驗證電路設計理論。針對吸波器的特性進行分析,根據吸波材質進行基板的選用,並設計一組兩階頻率選擇表面,其兩端阻抗比值與中心頻率與頻寬的變化關係決定等效電路架構後,以雙層頻率選擇表面為架構,使用FR4基板實現等效為金屬細環形狀。本論文製作之雙層頻率選擇表面阻抗倒轉器量測結果所涵蓋的-10dB頻帶為7.66 GHz至13.22 GHz,於X頻帶之中心頻率10 GHz的頻寬為55.6%,並於頻帶內之9.02 GHz與12.38 GHz具有90度之相位差,量測結果可驗證全波模擬。本論文所設計應用於X頻帶的衛星通訊系統。zh_TW
dc.description.abstractIn this thesis, an impedance inverter using double layers frequency selective surface (FSS) on a broadband absorber will be implemented. The purpose of design is to match arbitrary loads to free space. The equivalent circuit model of the second order frequency selective surface can be verified on ADS results software and full-wave EM simulations. Select the suitable substrate according to the property of the broadband absorber and design a second-order frequency selective surface. Based on the relationship of bandwidth between two ports impedance ratio and center frequency, the circuit scheme is established. The metal ring on FR4 is used to realize the unit cell layout of frequency selective surface. The measured -10-dB reflection bandwidth of the proposed impedance inverter can cover 7.66 to 13.22GHz.The bandwidth of center frequency of X-band is 55.6%.And the phase delay is at 9.02GHz and 12.38GHz with respect to X-band. The proposed impedance inverter can be used in X-band satellite communications systems.en_US
DC.subject斜向入射zh_TW
DC.subject吸波體zh_TW
DC.subject頻率選擇面zh_TW
DC.subject阻抗匹配zh_TW
DC.subject阻抗倒轉器zh_TW
DC.subject正向入射zh_TW
DC.subject垂直偏極化zh_TW
DC.subject平行偏極化zh_TW
DC.subjectOblique incidenceen_US
DC.subjectAbsorberen_US
DC.subjectFrequency selective surface,FSSen_US
DC.subjectImpedance matchingen_US
DC.subjectImpedance inverteren_US
DC.subjectNormal incidenceen_US
DC.subjectPerpendicular Polarization,TEen_US
DC.subjectParallel Polarization,TMen_US
DC.title應用於X-band平面吸波器之阻抗倒轉器設計zh_TW
dc.language.isozh-TWzh-TW
DC.titleDesign of Impedance Inverters for X-band Planar Absorbersen_US
DC.type博碩士論文zh_TW
DC.typethesisen_US
DC.publisherNational Central Universityen_US

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