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If a multibeam array has ____, it may not be feasible to assign a complete frequency-reuse plan to each beam.

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If a multibeam array has ____, it may not be feasible to assign a complete frequency-reuse plan to each beam.

(a) a single beam

(b) two beams

(c) less than five beams

(d) more than ten beams

The question was asked in my homework.

This question is from Smart Antenna in section Smart Antenna & Software Component Characteristics of Cognitive Radio

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Right answer is (d) more than ten beams

The explanation: If a multibeam array has more than ten beams, it may not be feasible to assign a complete frequency-reuse plan to each beam. This is due to the interference with adjoining sectorized antennas.

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