本研究之目的，在於研製主動電路與天線彼此之間的整合與微小化。由於近年來微波單晶積體電路之技術日趨成熟，並且主流市場針對手持式裝置之通訊品質與外觀大小皆越來越講究。天線在通訊系統中扮演一輻射元件，因此其特性勢必主宰通訊的品質之優劣;此外，從外觀的角度而言，天線又通常是佔據了大多數通訊硬體的面積，因此，相較於通訊前端電路之諸多電路元件而言，其微型化之挑戰會來得比其他微波單晶積體電路嚴刻。因此，若能設計出符合具有高整合且具有良好頻寬之天線將會具有高度的價值。
本研究基於主動式電路與天線之間的整合，分別提出具諧波抑制之槽孔耦合主動式天線與寬頻雙饋入圓極化天線設計。藉由設計具有折彎式的槽孔以及在輻射貼片之激發邊緣處植入矩形窄槽孔，以改變由主動電路產生在天線饋入端的高次諧波成份，進而達到高次諧波抑制的效果。寬頻雙饋入圓極化天線採用空間式功率結合式的架構來達成。藉由不同的激發天線之貼片構造進行分析，並且將傳統的具週期特性饋入線以兩個主動級電路作取代以作為主要的特性探討目標。而饋入機制相較於傳統的50歐姆饋入方式而言，則在不改變訊號等效行進波長的條件下，以步級式阻抗與殘段的方式來達到天線整合至主動電路的概念。本天線在有效的頻內皆可達到不錯的主動級特性，以及小型化的效果。

This study is focus on the integration and miniaturess of the active circuit and antennas. Recently, the monolithic microwave integrated circuits have been mature in communication markets and the associated handsets are interesting in the quality and profile. The antenna plays a role as a radiator in wireless system. Therefore, the performance dominates the quality of communication. The aspect of the antenna usually occupies the majority communication hardware’s area. Comparing many front end circuit elements, the challenges in the antennas will be more crucial. Therefore, it has well merits in designing high integration and bandwidth antennas.
Based on the integration of the active circuits stage and antennas, this work presents the aperture coupled active antenna with harmonic suppression and broadband dual feeds circularly polarized patch antenna. Utilizing the bented aperture and insertion of narrow rectangular slots on excitation edge for shifting the high order harmonic components from the active stage, the harmonic suppression characterization is implemented by the above approach. The other active antenna, braodband dual feeds circularly polarized antenna, is achieved with spatial power combining. The subject aims the different excitated patch structures and replacing the periodic feeding lines as active circuits in the discussion. Relative to the conventional 50 Ohm feeds, the mechanics of the feeds are modified with stepped impedance resonators and stubs at the same physical wave length condition for achieving the integration of the antenna and the circuit. Besides, this antenna can exhibit excellent behavior and compact the size in the effective frequency range.

目錄--------------------------------------------------------------------------I
圖目錄----------------------------------------------------------------------III
表目錄--------------------------------------------------------------------VIII
第一章、序論
(Introduction)
1-1 前言-------------------------------------------------------------------1
1-2 研究動機-------------------------------------------------------------2
1-3 章節內容提要-------------------------------------------------------3
第二章、放大型天線設計與考量
(Designing and Deliberating in Amplifier Antenna)
2-1 簡介-----------------------------------------------------------------6
2-2 天線原理-----------------------------------------------------------6
2-3 空腔理論與諧振特性------------------------------------------10
2-4 功率放大器設計------------------------------------------------13
2-5 主動式天線拉移方法與匹配---------------------------------18
第三章、 具諧波抑制之主動式天線設計
(Active Integrated Antenna with Harmonic Suppression)
3-1 簡介---------------------------------------------------------------24
3-1-1 諧波抑制天線之相關設計-------------------------------24
3-2 天線設計--------------------------------------------------------- 28
3-2-1 天線架構設計------------------------------------------------28
3-2-2 主動式天線之設計------------------------------------------34
3-2-3 實驗與模擬結果---------------------------------------------37
3-3 討論---------------------------------------------------------------51
第四章、圓極化雙饋入寬頻主動式天線設計
(Dual Feeds Broadband Circularly Polarized Active Integrate Antenna)
4-1 簡介---------------------------------------------------------------54
4-1-1 圓型極化天線相關設計----------------------------------56
4-2 天線設計---------------------------------------------------------57
4-2-1 天線架構設計----------------------------------------------57
4-2-2 主動式天線佈局與架構----------------------------------62
4-2-3 實驗與模擬結果-------------------------------------------67
4-3討論----------------------------------------------------------------83
第五章、結論---------------------------------------------------------------85
(Conclusion)
參考文獻------------------------------------------------------------------------------86

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