曲折型天線具有重量輕、體積小之特性，符合高性能飛行體之要求。曲折型天線使用曲折區域，可在頻率不變的條件下降低偶極和單極天線的長度，也可在長度不變下降低天線的使用頻率，使其可安裝於機艙外側、尾翼或是主翼當中，將天線對空氣動力流場造成的影響減至最低，進而減少耗油量。雖然曲折型天線是將單極或是偶極天線加上曲折區域所發展而來，可是曲折型天線的一些特徵，像是幅射場型、指向性或是增益值等，與原來的天線並無太大的差異。本文中將曲折型天線分成曲折區域以及輻射區域兩部份進行分析，前者的作用與電感相同，後者則可看成是幅射特徵與線型天線相似的類單極天線，由類單極天線所引起的負輻射電抗被曲折區域所提供的正電抗值所抵消，也就形成的共振的曲折型天線。本論文計畫使用電感模式量化曲折區域對天線的影響，並建立一種有效的曲折型天線設計方式。
本文於驗證方面，利用所建立的曲折型天線設計方式，於印刷電路板上設計多組共振頻率為900MHz的印刷曲折型天線，並進行共振頻率分析，所得之共振頻率皆在900MHz附近。分析結果同時顯示，雖然天線的幅射場型、指向性與增益值有稍微變化，不過相對於長度的變化來說，仍是相當理想。

In high performance aircraft, spacecraft and missile applications, where size, weight, and performance are of major constraints, shorter length of antennas are desirable. A meander line antenna has several meander line sections so as to shorten the length from the corresponding dipole and monopole antennas. Such design can be installed in wings, tail and fuselage to completely eliminate the drag problem or minimize the aerodynamic disturbances. This thesis employs inductor model to quantify the influence of the meander line sections for efficient and effective design process. A meander line antenna can be modeled by the combination of several meander line sections and radiation elements. The former are similar to inductors while the latter constitutes a quasi-monopole antenna whose radiation characteristics are similar to a wire antenna. The negative radiation reactance induced by the quasi-printed monopole antenna can be compensated by the positive input reactance from the multiple meander line sections so as to facilitate a resonating printed meander line antenna. Analysis and Experiment show that the inductor model provides an efficient design of the printed meander line antennas.

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