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Antenna Beam Width
Nov 19, 2016

Patterns usually have two or more flaps, flap called the main lobe of the radiation intensity, the rest of the disc called the side-lobe or side-lobe. See fig 1.3.4 a, on the sides of the main direction of maximum radiation, the radiation intensity is reduced by 3 dB (halving the power density) between two points is defined as the angle of beam width (also known as half power beam width or the width of the main lobe, or corner). Narrower beam width, direction better, farther away, the stronger anti-interference ability.