Implementation of Multi-Band Antenna By Using the Frequency Band-Notched Techniques

• Main Authors: Yu-Chieh Wei, 魏于傑
• Other Authors: 林丁丙
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/p958da

碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 95 === The aim of this paper is to design the multi-band slot antenna by introducing the band-notched technology in the wide-band antenna for the expected applications. First, through controlling the coupling of capacitively-fed with the wideband characteristic and considering the impact of geometrical parameters on the slot antenna, we design the antenna with bandwidth from 2GHz to 6GHz in the rectangular slot antenna for the WiMax application. Further, we excite out the higher resonant mode in order to increase the impedance bandwidth by increasing the inductance of the feeding line and the resonance route. After tuning properly the impedance matching, the impedance bandwidth can cover from 2GHz to 11GHz. In order to avoid the interference from overlapping of the frequency band with other wireless network system, we introduce the different band-notched mechanisms on the wideband antenna designed previously. Then we can gain the antenna with multi-band that we expected. Finally, we show the simulated and measured result of antenna’s performance have in good agreement.