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A 21-GHz band satellite broadcasting system is being studied as a means of delivering 8K (Super Hi-Vision), 3DTV and other advanced forms of broadcasting. We assumed the use of two 300-MHz wideband channels in the 21.4 to 22.0- GHz band and devised 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 effectively exploits...
The 21-GHz band is expected to be used to transmit next-generation broadcasting services. We previously proposed a wide band transponder configured with an array-fed imaging reflector antenna that enables to combine enough power for large capacity signal transmission and that can also alter its radiation pattern to mitigate fading. We evaluate here the electrical performance of a prototype beam forming...
A 21-GHz band satellite broadcasting system is being studied as a means of delivering 8K (Super Hi-Vision), 3DTV, and other advanced forms of broadcasting. We assumed the use of two 300-MHz class wideband channels in the 21.4 to 22.0-GHz band and devised 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 an effective...
NHK is developing Super Hi-Vision, a form of ultra-high-definition TV. In order to transmit multiple SHV programs and other advanced forms of broadcasting, satellite broadcasting in the 21-GHz band is expected. We have proposed an array-fed reflector antenna as part of a wide band and high power transponder combining outputs of the each element through high power amplifiers that are close to the elements...
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