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標題Title: Designed Wide-Band Microstrip Line-Fed T-shaped Antenna on the Al2O3 Substrate
作者Authors: 鄭建民,Cheng-Fu Yang..等
上傳單位Department: 電子工程系
上傳時間Date: 2009-11-22
上傳者Author: 鄭建民
審核單位Department: 電子工程系
審核老師Teacher: 鄭建民
檔案類型Categories: 論文Thesis
關鍵詞Keyword: Wide-Band,T-shaped Antenna,Al2O3 Substrate
摘要Abstract: In this study, we are tried to design the wide-band microstrip line antenna on ceramic substrate in order to reduce the size of fabricated antenna. High quality factor Al2O3 ceramic is adopted as the substrate and the influences of the structure (the metal of covering and the length of ground) are also investigated in this thesis. Due to the larger dielectric constant of Al2O3 ceramic (εr=9.8), the size of this antenna is small (25 mm × 20 mm). For the designed antenna, the resonance frequency is near 4.2 GHz, the optimum bandwidth is 760 MHz (18.1%), and the return loss (S11) is −36.77 dB. The gain of fabricated antenna is acceptable for the application in the communication.

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2009_11_5cb11139.pdf 848Kb pdf 634 393
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