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Ultra-wideband tapered slot antenna with band cutoff characteristic

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5 Author(s)
Yoon, I.-J. ; Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea ; Kim, H. ; Yoon, H.K. ; Yoon, Y.J.
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A novel ultra-wideband (UWB) tapered slot antenna (TSA) is proposed that has both enhanced impedance bandwidth enough to cover UWB systems and band cutoff characteristic of 5 GHz WLAN band limited by IEEE802.11a and HIPERLAN/2. To achieve these two characteristics of wide bandwidth and partial band cutoff at the TSA, a broadband microstrip-slotline transition with multi-arm stubs and λ/4 short stubs, respectively, is used. From measured results, it is observed that wide bandwidth of about 2 octaves from 2.8 to 11.09 GHz for the VSWR<2 is achieved, while 5.05-5.93 GHz is cutoff with the radiated power of this cutoff band effectively suppressed as about -9 dB for the peak power level of other bands.

Published in:

Electronics Letters  (Volume:41 ,  Issue: 11 )

Date of Publication:

26 May 2005

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