How to Calculate Beam Width between First Null (BWFN) of Helical Antenna?
Beam Width between First Null (BWFN) of Helical Antenna calculator uses Helical Beam Width of First Null Broadside Array = 115*Helix Circumference^(3/2)/(Operational Circumference*sqrt(Turn Spacing*Number of Turns of Helical Antenna)) to calculate the Helical Beam Width of First Null Broadside Array, The Beam Width between First Null (BWFN) of Helical Antenna formula is similar to the half power beam width, except the first null angle is estimated between the points of the lowest gain around the main lobe (nulls). Helical Beam Width of First Null Broadside Array is denoted by BWfn symbol.
How to calculate Beam Width between First Null (BWFN) of Helical Antenna using this online calculator? To use this online calculator for Beam Width between First Null (BWFN) of Helical Antenna, enter Helix Circumference (Cλ), Operational Circumference (C), Turn Spacing (S) & Number of Turns of Helical Antenna (n) and hit the calculate button. Here is how the Beam Width between First Null (BWFN) of Helical Antenna calculation can be explained with given input values -> 12642.22 = 115*0.8^(3/2)/(1.467*sqrt(35.3*6.01)).