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The 21-GHz band satellite broadcasting system is studied for transmission channels that can deliver Ultra High Definition TV, 3DTV, etc. We assumed the allocation of two 300-MHz class wideband channels in the 21.4 to 22.0-GHz band and propose an array-fed imaging reflector antenna (array-fed IRA) to supply enough power for a transponder with such a wide band. The array-fed IRA is also an effective...
A study of a UWB array antenna is presented, which is composed of leaf-shaped bowtie radiating elements printed on a dielectric substrate. With the use of a flat reflector, the presented antenna has unidirectional radiation characteristics and higher directivity in comparison with omnidirectional UWB antennas. In the maximum radiation direction of the proposed antenna, the actual gain of 10.3-13.3...
In this paper, we propose a 2-element UWB array antenna using leaf-shaped bowtie elements and a reflector, which has unidirectional radiation characteristics and higher-directivity. Furthermore, the waveform distortions caused by this antenna are evaluated by calculating cross-correlation coefficient between source and received pulses.
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