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A folded pillbox antenna is used in which of the following feeding system?

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A folded pillbox antenna is used in which of the following feeding system?

(a) Parallel plate feed

(b) Space feed

(c) Optical feed system

(d) Constrained feed system

The question was asked in semester exam.

Asked question is from Phased Array in chapter Phased, Adaptive and Binomial Arrays of Antennas

1 Answer

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The correct option is (a) Parallel plate feed

To explain I would say: Folded pillbox antenna is used to provide the power distribution to antenna elements. So this is used in the parallel plate feed system. Lens and reflect array used in the space/optical feed systems. Constrained feed provides a series and parallel feed combination.

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