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An ultrawideband inverted double discone antenna with 150:1 impedance bandwidth
Author(s) -
Shahid Irfan,
Hussain Fawad,
Burki Jehanzeb,
Arif M. Shoaib
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29530
Subject(s) - omnidirectional antenna , standing wave ratio , antenna measurement , acoustics , coaxial antenna , radiation pattern , bandwidth (computing) , tapering , electrical engineering , engineering , antenna (radio) , electronic engineering , microstrip antenna , physics , computer science , telecommunications , computer graphics (images)
In this article, an improved design of ultrawideband (UWB) inverted double discone (IDD) antenna is presented. Conventionally, IDD antennas are designed using tapered cylindrical wires as antenna elements. The tapering makes these antennas very fragile and the antennas suffer frequent damage during installation, transportation or even, due to perching of birds during normal operation. In this work, curved metal sheets are used instead of tapered wires to improve antenna robustness with no compromise on antenna's performance. Using this approach, an IDD antenna with an ultrawide impedance bandwidth is designed, fabricated, and tested. The measurements show good conformance with design and the measured antenna demonstrates an impedance bandwidth (for VSWR < 2) of 150:1 in frequency range of 120 MHz–18 GHz with omnidirectional radiation characteristics. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:181–184, 2016