本研究的目的是評估市場上的微波介電粉料NPO37M，應用在GPS天線設計。利用市售的粉料設計尋找最佳的燒結溫度，溫度從1060℃~1200℃加以分析其微波特性，介電常數、品質因子、共振頻率溫度係數，及材料組成。經由最佳化的製程條件溫度1150℃獲得燒結後結構其介電常數為37。利用厚膜印刷製程、電極二次燒結技術設計及此條件製作平板型GPS天線，在50×50mm的Ground上量測其天線基本特性，得到δ值為0.65的穩定頻率範圍，及接近4dBic的天線增益。

The goal of this research was to evaluate the feasibility of utilizing a commercial microwave dielectric powder to fabricate a GPS antenna. The best combination of dielectric properties, i.e., a high dielectric constant, a high quality factor, and a low coefficient of temperature of resonance frequency, was identified by varying the sintering temperature ranging between 1060 and 1200 oC. After optimization of manufactory conditions, the optimal sintering temperature was 1150 oC and dielectric constant of the sintered specimen was 37. A patch type GPS antenna was designed based on this dielectric constant and the conducting circuit was thick-film- printed and fired on the pre-fired dielectric substrate. The GPS antenna, with a ground area of 50 mm X 50 mm, yielded a stable band width range 12.3MHz stable frequency range, d = 0.65 and a gain of 4 dBic.

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