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      • Department of Electrical and Electronics Engineering
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      Parasitic effects of the metallic towers on the characteristics of the broadcast antennas

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      Embargo Lift Date: 2019-04-20
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      Author(s)
      Ali, A.
      Colantonio, P.
      Altintas, A.
      Date
      2018
      Source Title
      International Journal of RF and Microwave Computer-Aided Engineering
      Print ISSN
      1096-4290
      Publisher
      John Wiley and Sons
      Volume
      28
      Issue
      4
      Language
      English
      Type
      Article
      Item Usage Stats
      173
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      150
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      Abstract
      In this article, we use a tool NEC (Numerical Electromagnetic Code) to model antenna on top of a tower structure. Simulation results for the parasitic effect of the tower on characteristics of broadcast DVB-T (Digital Video Broadcasting Terrestrial) antenna such as input impedance, return loss, gain, front-to-back ratio and radiation patterns are reported. In addition, the effect of a nearby tower on antenna characteristics is studied. A 3D tower and broadband antenna in the UHF (470-862) MHz band are constructed. The antenna works for both digital and analog TV with return loss (RL) ≥ 10 dB, fractional bandwidth of 87% and gain of 12.3 dBi at center frequency. The effective radiated power is calculated by mounting the antenna at each face of the tower to give a satisfactory coverage to a region around the antenna.
      Keywords
      Broadcast
      DVB-T
      ERP
      NEC
      Parasitic tower
      UHF
      Permalink
      http://hdl.handle.net/11693/49940
      Published Version (Please cite this version)
      https://doi.org/10.1002/mmce.21203
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      • Department of Electrical and Electronics Engineering 3863
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