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How would you evaluate the trade-off between the main lobe beamwidth and the power in the...

How would you evaluate the trade-off between the main lobe beamwidth and the power in the side lobes of an antenna’s radiation pattern?

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Answer #1
  • When a uniform excitation is applied on a linear array, the number of elements increases.
  • Here the trade-off between main beamwidth and sidelobe level is increased.
  • In order to obtain a radiation pattern with the sidelobe values below the threshold value, there should be a considerable increase in beamwidth.
  • When comparing with uniform spacing, in the case of nonuniform spacing the tradeoff between the main beam with the sidelobe is improved.
  • That is non uniformly spaced linear has a better performance than the uniformly spaced.



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