Scan the skyline of New York City and it’s almost everywhere you look. Same thing with Chicago and Philadelphia and just about any big city where the buildings poke into the sky. Everyone knows ...

The photonic based technology boom of the late 1990s was driven by the need to replace expensive, lag-prone and limited satellite telecom links. These links were based on high frequency radio waves ...

First, the payload requirements and problems faced by traditional multi-beam antenna are described. The user beam of the VHTS payload system mainly uses Ka-band multi-beam antenna for a large range of ...