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Satellite systems can utilize the Rotman lens MBFN in order to achieve high-performance features such as high-directivity, RF steering coverage, and frequency-invariant RF beam directions.
The array ports have been spaced in such a way that elements of the array can be directly attached to the MBFN.
As long as the path lengths exhibit constant time-delay behavior over the system bandwidth, the lens is insensitive to the beam squint problems exhibited by constant phase MBFNs [5].