Design of multi-function novel special-shaped UWB microstrip antenna

• Main Authors: Kun-Chih Lin, 林昆志
• Other Authors: Min-Shih Yuan
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/27035922032538982431

碩士 === 中華技術學院 === 飛機系統工程研究所 === 97 === In this thesis, four types of ultra wide-band antenna are designed and implemented, they are special-shaped UWB antenna with circular ground plane , special-shaped UWB antenna with rectangle slot and eight corners type on ground plane, special-shaped UWB antenna with dual elliptic slot on the ground plane, special-shaped UWB antenna with dual function characteristics, respectlly. All of these antennas are feed by taper strip, this way can increase bandwidth and multi-band. Bandwidth the circular ground plane from 2.62GHz to 13.9GHz, impedance bandwidth ratio is 136%, and the peak gain is 7.44dBi. The bandwidth of rectangular with eight corners type from 2.85GHz to 12GHz, impedance bandwidth ratio is 123%, and the peak gain is 7.536dBi. The bandwidth of dual elliptical type from 2.85GHz to 11.2GHz, the impedance bandwidth ratio is 118%, the peak gain is 6.187dBi. The bandwidth of dual-function microstrip antenna from 2.25GHz to 2.59GHz and 3.09GHz to 20.05GHz, impedance bandwidth is 340MHz and 16.96GHz, the ratio of impedance bandwidth is 14% and 146%, antenna gain of peak value is 6.5dBi, this antenna can use in bluetooth、RFID and UWB systems applications.