光子晶体天线

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1、全平面的增益加強及縮小化貼片天線研究生:蔡昌毅指導教授:莊晴光博士國立交通大學電信工程研究所摘要本論文應用最近發展可增加慢波因子(Slow-wavefactor)及寬截止帶(Stopband)的週期結構作了兩個應用。一是使用其慢波結構(Sloe-wavestructure),並以印刷電路板(PCB)的製程來縮小貼片天線的大小。與傳統的貼片天線相比較,應用此結構的貼片天線的邊長及面積可縮小至76%和57%。第二個應用則以壓抑表面波的來增強貼片天線的增益。根據實驗的結果,設計天線的增益比傳統的高了1.03

2、dBi。貼片天線的製作說明及量測結果均敘述於本文之中。1All-planarGain-enhancedandMinimizedPatchAntennaStudent:Chang-YiTsaiAdvisor:Dr.Ching-KuangC.TzuangInstitudeofCommunicationEngineeringNationalChiaoTungUniversityABSTRACTUtilizingtherecentlydevelopedElectric-Magnetic-Electric(EM

3、E)compositemetalstrips,whichcanincreasetheslow-wavefactorandhaveabroadstopband,twoapplicationsareintroducedinthisthesis.Firstoneusesslow-wavestructurestominimizethepatchantennaemployingPCB(printed-circuit-board)fabricationprocess.Theresonantlengthandare

4、aoftheslow-wavepatchantennaarereducedtobe76%and58%whencomparedwiththeconventionalone.Gainenhancementofthepatchantennabysuppressingsurfacewavesistheotherapplicationinourstudies.Accordingtotheexperimentalresults,thepeakgainofthedesignpatchantennais1.03dBi

5、higherthantheconventionalone.Statementsandmeasurementresultsofbothpatchantennasarealsoincludedinthisthesis.2TableofContentsAbstract(Chinese)…………..……………………………….……..……iAbstract(English)…………….…………………………………..…….iiAcknowledgments……………………………………………………...iiiTab

6、leofContents…………………………………………………….…ivListofFigures…………………………………………………………..viListofTables…………………………………………….………………xCHAPTER1Introduction………..………………………………….11.1Introduction…………………………………………….11.2OrganizationofThisThesis……………………….…...3CHAPTER2GuidingCharacteri

7、sticsofPeriodicStructure..….....42.1Introduction……………………………….……………42.2Electric-Magnetic-Electric(EME)Microstrip…….….102.3GuidingCharacteristicsofElectric-Magnetic-Electric(EME)Microstrip……………………..………………12CHAPTER3SizeReductionofMicrostripPatchAntennasUsi

8、ngPeriodicStructures…………………………….....….173.1Introduction…………………………………………...1733.2PatchAntennaDesign……………..……………….....223.3StatementsofSlow-waveMicrostripPatchAntenna…273.4MeasurementResults…………………………………32CHAPTER4PatchAntennaGainEn