Experimental verification of the generalized Schelkunoff's horn-gain formulas for sectoral horns

Abstract

Gain measurements are reported on sectoral horns and are used in an examination of the accuracy of the generalized horn-gain formulas proposed recently.

Improved diffraction model and numerical validation for horn antenna gain calculations

“…The authors of [13] claim to have, according to their knowledge, recently published the first ever measurement efforts on the gain of H-plane horns, but even their measurements only spanned very few frequency points. Figure 9a shows a comparison of their measurements to both the numerical and diffraction results.…”

Polynomial-Based Evaluation of the Impact of Aperture Phase Taper on the Gain of Rectangular Horns

“…In [5], Schelkunoff's formula was extended by involving an additional term that accounts for the influence of the edge effect on the on-axis gain and included sectoral horns and open-ended rectangular waveguides. In general, the expressions presented in [2,5] give adequate results and are commonly used in the literature [6][7][8][9][10][11]. Comparisons between calculated results and measured data showed an uncertainty ±0.5 dB for frequencies below 2.6 GHz and ±0.3 dB for higher ones [12].…”

“…However, the accuracy of his method is strictly related to the accuracy of the approximations of (6) and (7).…”

Accurate Design Method for Pyramidal Horns of Any Desired Gain and Aperture Phase Error

“…The realized gain with these dimensions is calculated to be 24.68 dB, and is in good agreement with the goal gain. In the above, it may be noted that the Schelkunoff's horn gain formula has an uncertainty of [7].…”