Tapered Slot CPW-fed UWB Antenna
碩士 === 長庚大學 === 電機工程學研究所 === 96 === In this thesis two novel coplanar waveguide (CPW) ultra wideband (UWB) antennas fabricated on FR4 printed circuit board (PCB) are presented. The one is using tapered slot with compact size 43mm×20.8mm to achieve a large impedance bandwidth. Moreover, two different...
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2008
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| Online Access: | http://ndltd.ncl.edu.tw/handle/82969467252143100575 |
| Summary: | 碩士 === 長庚大學 === 電機工程學研究所 === 96 === In this thesis two novel coplanar waveguide (CPW) ultra wideband (UWB) antennas fabricated on FR4 printed circuit board (PCB) are presented. The one is using tapered slot with compact size 43mm×20.8mm to achieve a large impedance bandwidth. Moreover, two different slots in the ground plane can improve the impedance match and obtain the better response at low frequency band to match the FCC regulation. Experimental results show that the return loss of the proposed antenna is lower than – 10 dB from 2.67 to 14.15GHz and the impedance bandwidth is 136.5%. The radiation patterns within this range are also measured. The other is the oval-shaped monopole antenna with compact size 52mm× 49mm, which is using the rectangular ground plane with an oblique angle under the radiating body to achieve a large impedance bandwidth. The operating frequency of the proposed antenna ranges from 3.28 to 11.88 GHz and the impedance bandwidth is 113 %.
Moreover, an elaborate time domain study of the antenna is emphatically addressed by an impulse train signal generated from an optical system. Experimental results show that two monopole UWB antennas demonstrate a good performance in time domain.
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