微帶天線具有低重量、低剖面之特性，可將其安裝於飛機外或包埋於複合層板中使得天線對空氣動力流場造成的影響減至最低。微帶天線的一個最大的特點就是在形成陣列時，天線與饋入網路可以在同一基材上以蝕刻的方式來完成。藉由天線陣列的方式，可以有效的增加天線增益來達到遠距離通訊的要求。本文著重於在印刷電路板與軟性可撓電路板上的天線陣列之設計與分析，並提出設計步驟與考量。
　　　本文提出了在印刷電路板上1×2、1×4、1×8、2×2、2×4及軟性可撓電路板上1×2之微帶天線陣列設計，並分析各天線陣列之輸入匹配損耗、輻射場形以及天線增益。分析結果顯示天線陣列設計需要不同的相對距離使得中心頻率落在給定的頻率，並且天線陣列的性能會受到饋入網路微帶傳輸線的損耗之影響而降低。分析結果並顯示在理想狀況下，使用面形(planar)陣列所增加的增益要比線形(linear)陣列高；然而由於平面形陣列之饋入網路設計較複雜，損耗較大，而縮短了實際上平面形陣列與線形陣列所增加的增益之差距。最後實際做出在印刷電路板上單一的微帶天線及1×2、1×4微帶天線陣列並進行量測，並安裝於無線路由器上來驗證性能之提升。

　　　In high performance aircraft, spacecraft and missile applications, where size, weight, and performance are constraints, low profile microstrip antennas are desirable. One of the most attractive features of the microstrip antennas is that they can be formed into arrays with feed network photo-etched on the same dielectric substrate thereby conformal to the mounting or embedding surface. The antenna gain can be effectively increased by arrays to meet the requirement in communication. This thesis aims at the design and analysis of microstrip antenna arrays on printed circuit board (PCB) and flexible printed circuit (FPC) such that they can be embedded in composite laminates on flight vehicles. The design procedures and considerations of rectangular microstrip antenna arrays operating at 2.4 GHz are presented.
　　　Design and analysis of 1×2, 1×4, and 1×8 linear array and 2×2 and 2×4 planar array on PCB are conducted. Analyses show that the relative distance of the two adjacent microstrip antennas is determined by the array configuration for a given central frequency. The feed network operates similarly to microstrip transmission lines also influences the array performance. The results show that the feed network design composed of power dividers in planar array is more complicated than that in linear array. A single microstrip antenna of 2.4 GHz on PCB substrate has a gain of 3 dB, and the gain in the linear array of 1×2, 1×4, and 1×8 is 5.2, 7.0, and 8.7 dB, respectively. Similarly, the gain of the planar array of 2×2 and 2×4 is increased to 7.6 and 9.7 dB respectively. A single antenna and the 1×2 and 1×4 antenna array are fabricated, measured and connected to a wireless access router to demonstrate their effectiveness in higher gain.

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