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LTCC substrate integrated waveguide filter research

Author: ZengQiYuan
Tutor: LiaoJiaXuan
School: University of Electronic Science and Technology
Course: Materials Science and Engineering
Keywords: SIW filters LTCC technology across coupling multi-layer filter
CLC: TN713
Type: Master's thesis
Year: 2011
Downloads: 123
Quote: 0
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Abstract


As an important component of electronic systems, its performance and volume are key parameters of high performance and compact systems, especially in microwave and millimeter-wave systems. How to design high-performance, low insertion loss and compact filters is the research focus and difficulty in the world.This paper focuses on microwave and millimeter-wave filters performance and volume. Combining LTCC technology and SIW technology, high performance and compact millimeter filters are implemented. Base on research on LTCC SIW filters structures, the best structures which have high performance are established.Firstly, LTCC SIW filters’structures are studied, and three main structures: resonator, stimulating structure and coupling structure are analyzed. Suitable X band and Ka band structures are chosen, dimensions of these structures are calculated. Second, according to the design requirements, optimized LTCC SIW filters are designed using HFSS software. Different stimulation, coupling structures in the same band are simulated, and same structure at different frequency is also simulated. Resonator, stimulation mode and coupling structure are analyzed respectively to achieve the best structures.In addition, an X-band double layer across coupling filter is designed, and LTCC SIW filter is extended from planar to 3D structure. The elements of the filter are increased and the volume of the filter is further reduced by adding the thickness of the substrate. The filter performance tolerance is analyzed according to actual process conditions, providing reference for final tests and analysis.Finally, vector network analyzer is used to test the performance of filters. LTCC SIW design is verified by comparing test results and simulation results. High performance at high frequency can be achieved with LTCC SIW design methods. Combining with tolerance analysis mentioned above, design improvements with LTCC SIW filters are provided.Finally, the design of the project is summarized, and shortness is analyzed.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Filtering techniques,the filter
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