臺灣博碩士論文加值系統

本論文研究以開路殘段加載的微帶線共振腔，內容有兩部分。第一部分研究平行耦合帶通濾波器，每個共振腔施以不同的加載，以得到不同的高階諧振頻率，達到很寬的上截止帶的設計目的。
第二部分研究以殘段加載達到多模共振腔的設計。文中設計及分析三模與五模的共振腔，並將之應用在準橢圓函數濾波器的設計。所製作的電路，模擬結果和實際量測結果相當吻合。

Parallel-coupled line bandpass filters and quasi-elliptic function bandpass filters are synthesized based on stub-loaded resonators. The open stub behaves as a capacitor which can be trimmed to produce resonators with the same fundamental frequency, but different higher order resonant frequencies. The resonators with staggered higher order frequencies are integrated in a single filter to achieve multispurious suppression in upper stupband. The tapped open stubs can also introduce an attenuation pole and a transmission zero to design a tripple-mode resonator and quintuple-mode resonator. The I/O stage is realized by means of a parallel-coupled stage. Bandpass filter is synthesized with a transmission zero on both lower and upper sides of passband. Measured results show good agreement with simulated responses.

中文摘要. .......................................... I
英文摘要.............................................. II
致謝... ............................................. III
目錄.................................................. IV
圖目錄................................................. V
表目錄................................................ IX
第一章 緒論......................................... 1
第二章 利用並聯開路殘段共振腔設計具有抑制多重高階諧波
功能之帶通濾波器............................. 6
2.1 平行耦合微帶線濾波器設計................. 6
2.2 增進高頻止帶及對稱性的平行耦合微帶線濾波器7
2.3 含並聯開路殘段加載之共振腔特性分析....... 7
2.4 電路設計、模擬及量測..................... 10
2.5 利用方形開路迴圈共振腔並聯開路殘段設計準橢
圓函數帶通濾波器......................... 12
第三章 利用單一共振腔設計具準橢圓函數響應的多模帶通濾
波器......................................... 15
3.1具三模(tripple-mode)及二個傳輸零點之共振腔分
析........................................ 15
3.2具五模(quintuple-mode)及二個傳輸零點之共振腔分
析........................................ 17
第四章 結論......................................... 19
參考文獻..................................... 53

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