Band-Rejected Design of the Printed Monopole Antenna for WLAN / WiMAX System
碩士 === 國立臺灣海洋大學 === 電機工程學系 === 99 === This thesis proposes a coplanar waveguide feed of a broadband monopole antenna. The proposed antenna structure can meet the requirement for UWB band operation(3.1 GHz~10.6 GHz),and the same time by including a notch function can eliminate the interference of WL...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/14562775018884533313 |
| Summary: | 碩士 === 國立臺灣海洋大學 === 電機工程學系 === 99 === This thesis proposes a coplanar waveguide feed of a broadband monopole antenna. The proposed antenna structure can meet the requirement for UWB band operation(3.1 GHz~10.6 GHz),and the same time by including a notch function can eliminate the interference of WLAN/WiMAX.
The proposed antenna design can meet the requirement for UWB operation(3.1 GHz~10.6 GHz). Furthermore, the proposed antenna can refrain the compact size by including a notch function to eliminate the interference due to co-existence of WLAN/WiMAX bands.
The first design to be studied is a hexagonal antenna with a co-planar waveguide feed. Different shapes ground planes were implemented to improve the overall impedance matching. The notch function is faciliated by a U-slot on the radiating antenna. At 5.5 GHz, most of the current distribution was found to be surrounding the U-slot resulting in an offsetting situation where the coexisted UWB and WLAN bands(5.15 GHz~5.85 GHz)can be effectively filtered out and hence satisfying the operation requirement for the proposed design. Next, we have analysed a radiating structure with a built-in inverted U-slot. The results showed that the design can filter out the coexisted UWB and WiMAX bands from 3.2 GHz~3.8 GHz.
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