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IEEE Transactions on Antennas and Propagation
Volume 48 Number 11, November 2000

Derivation of a Condition for the Normal Gain Behavior of Pyramidal Horns

Page 1782.

Abstract:

The pyramidal horn exhibits a normal monotonically increasing gain versus frequency characteristic, only when its axial length is more than a certain minimum value for given aperture dimensions. In this letter, approximate equations are derived for estimating this minimum axial length.

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