Abstract
Japanese terrestrial broadcasting was completely con- verted to digital television (DTV) broadcasting on 470{710MHz as of July 2011. However, fading phenomenon resulting from standing waves is a factor in quality deterioration in TV and mobile commu- nication technologies. Suppression of this is needed for many kinds of technologies. A broadband single-feed planar antenna composed of two antenna components, a Broadband Planar Monopole Antenna (B- PMA) and a Broadband Planar Slot Antenna (B-PSA), is proposed for reducing deterioration of reception due to the fading across the DTV band. Re∞ection coe-cients and radiation patterns analyzed by the Finite Difierence Time Domain (FDTD) method and compared with measured results indicate that the proposed antenna is broad- band compared with a conventional antenna studied previously. A fleld experiment is conducted in the DTV band. The results of the fleld experiment indicate clearly that the proposed antenna e-ciently suppresses fading resulting from standing waves across the band.
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