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標題Title: Print a Small Size U-Shape-Modified Broadband Slot Antenna on Ceramic Substrate
作者Authors: 鄭建民,C.F. 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: U-shaped,slot antenna,Al2O3 ceramic substrate
摘要Abstract: A microstrip-line-fed U-shaped modified slot antenna is designed and fabricated on Al2O3 ceramic substrate using the printing method. The influences of the length of microstrip-fed line and the thickness of Al2O3 ceramic on the characteristics of designed antennas are well
defined in this study. As compared to other available current designs, the proposed structure of the fabricated antennas would offer the advantages of large bandwidth, large return loss,
low profile and easy fabrication. Due to the larger dielectric constant of Al2O3 ceramic, the fabricated antenna has a small ground plane size of 30 mm × 30mm, and that is smaller than the slot antennas fabricated on a FR4 substrate. The fabricated slot antenna has a broad bandwidth of 275 MHz/8.9%, a high return loss of −28.0 dB and a maximum gain of 2.77 dBi at 3.12 GHz.

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2009_11_47c24d5f.pdf 483Kb pdf 549 595
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