Beverage antenna

A Beverage antenna ( also wave antenna ), named after its developer Harold Henry Beverage, is a long- wire antenna in a relatively low altitude, which is fed from one side and the end of which is grounded via a resistor. Thus, the symmetrical radiation pattern of the dipole shifts toward the grounded antenna end while reducing the backward radiation. In the diagram, the arrowhead marks the grounded side. At a length that is five to ten times as large as the wavelength, a reverse attenuation of about 10 dB can be achieved. The one-sided power the antenna is high impedance and requires a transformer ( balun ) for impedance matching.

The overall efficiency of a Beverage antenna is 1% as bad as the symmetrical design.

In radio amateurs it is usually used only for reception purposes, the 160 m band is preferred. Through its broadband it is also very suitable for the 80 - m and 40 - m band.