吳瑞北臺灣大學:電信工程學研究所錢鴻億Chien, Hung-YiHung-YiChien2010-07-012018-07-052010-07-012018-07-052008U0001-2907200807163200http://ntur.lib.ntu.edu.tw//handle/246246/188203本篇論文提出了數種利用單/雙折疊式基板合成波導共振器的微小化帶通濾波器。所有濾波器都被設計以及實現在低溫共燒陶瓷的技術上。先設計的是由單折疊式基板合成波導共振器所組成的濾波器。為了縮小面積，共振腔可以往介質厚度的方向堆疊。具柴比雪夫響應的濾波器可以藉由在同層的兩對連通柱跟不同層間的槽線來達成。除此之外，為了實現準橢圓函數濾波器，電耦合可以利用懸在介質當中的連通柱來達成。在多層結構中，適當的排列每個共振腔的位置，可以使得濾波器面積縮小到28%。一種設計是由雙折疊式基板合成波導共振器所組成的濾波器。為了進一步縮小濾波器面積，所有共振腔都作垂直堆疊。在雙折疊共振腔以及多層結構技術的幫助下，跟傳統平面耦合波導濾波器相比，電路面積可以縮小到12%。除此之外，我們也找到類似電耦合的機制去實現準橢圓函數濾波器。This thesis presents several miniaturized bandpass filters composed of single and double-folded SIW resonators. All of them are designed and fabricated in a multilayer low-temerature co-fired ceramic (LTCC) technology.irst, we design filters composed of single-folded SIW resonators. For size reduction, cavities can be stacked into their thickness direction. Filters with Chebyshev response can be achieved by two pairs of vias in the same layers and narrow slots between different ones. Besides, to realize the quasi-elliptic function filter, electric coupling is achieved by vias suspended in the substrate. Compared with planar waveguide filters, the circuit area can be reduced to 28% by an appropriate arrangement.nother type of filters composed of double-folded SIW resonators is designed and fabricated on multilayer structures also. To further reduce the filter size, all the cavities are stacked vertically. By the aid of the double-folded SIW resonators and the multilayer capability, the footprint of filter can be reduced to 12% as compared to a conventional planar direct-coupled waveguide filter. Besides, we also find the equivalent electric coupling to realize the quasi-elliptic filter.Chapter 1 Introduction 1.1 Research Motivation 1.2 Literature Survey 1.3 Organization 3.4 Contributions 3hapter 2 Basic Concepts and Theories of Filters 5.1 Dielectric Rectangular Waveguide 5.1.1 Waveguide Structure 6.1.2 Propagation Modes [14] 7.2 Rectangular waveguide cavities 8.2.1 Resonant Frequencies [16] 9.2.2 Quality Factor 11.3 Chebyshev Function Filters 15.3.1 Lowpass Prototype Design 15.3.2 External Quality Factors and Coupling Coefficients 16.4 Quasi-Elliptic Function Filters 18.4.1 Lowpass Prototype Design 18.4.2 External Quality Factors and Coupling Coefficients 19.5 Basic Theory of Couplings 21.5.1 Electric Couplings 22.5.2 Magnetic Couplings 23.5.3 Mixed Couplings 24.5.4 External Quality Factor 25hapter 3 Miniaturized BPFs with Single-Folded SIW resonators 29.1 Single-Folded SIW Resonators 29.1.1 Structure 29.1.2 Mode Patterns 29.1.3 Quality Factor 30.2 Third-Order Parallel-Coupled Filter 34.2.1 Design Specification 34.2.2 Coupling and Feeding Structures 35.2.3 Filter configuration 36.2.4 Simulation and Measurement 37.3 Fourth-Order Vertically Stacked Filter 41.3.1 Design Specification 41.3.2 Coupling Structure 42.3.3 Filter configuration 42.3.4 Simulation and Measurement 42.4 Fourth-Order Vertically Stacked Cross-Coupled Filter 48.4.1 Design Specification 48.4.2 Coupling Structure 49.4.3 Filter configuration 49.4.4 Simulation and Measurement 50hapter 4 Miniaturized BPFs with Double-Folded SIW resonators 59.1 Double-Folded SIW Resonators 59.1.1 Structure 59.1.2 Mode Patterns 60.1.3 Quality Factor 60.2 Third-Order Vertical-Coupled Chebyshev Filter 64.2.1 Design Specification 64.2.2 Coupling and Feeding Structures 65.2.3 Filter configuration 65.2.4 Simulation 66.3 Fourth-Order Vertically Stacked Quasi-Elliptic Filter 72.3.1 Design Specification 72.3.2 Coupling Structure 73.3.3 Filter configuration 74.3.4 Simulation and Measurement 74hapter 5 Conclusions 83EFERENCES 853500676 bytesapplication/pdfen-US濾波器基板合成波導低溫共燒陶瓷折疊式波導微小化filterSIWLTCCfolded waveguideminiaturizedthesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/188203/1/ntu-97-R95942082-1.pdf