Abstract
This paper presents the comparative study of printed dipole antenna with step-shaped feed gap for DTV applications. By proper adjusting the length of arm strips, the additional resonant mode is excited close to the fundamental resonant mode which can form wide operating band. With the equal length of the strip arms of dipole antennas but different step-shaped feed gap (single, double and triple step-shaped feed gap), the single and double step-shaped feed gap can cover the 470-806 MHz band for DTV reception. The dipole antenna with triple step-shaped feed gap can cover the 470-862 MHz band. The simulated and measured results such as return loss, VSWR, radiation pattern and gain for proposed antenna are investigated.
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