<P> Antennas can be designed to transmit and receive radio waves in all horizontal directions equally ( omnidirectional antennas ) , or preferentially in a particular direction ( directional or high gain antennas ) . An antenna may include parasitic elements , parabolic reflectors or horns , which serve to direct the radio waves into a beam or other desired radiation pattern . </P>
<P> Antennas can be designed to transmit and receive radio waves in all horizontal directions equally ( omnidirectional antennas ) , or preferentially in a particular direction ( directional or high gain antennas ) . An antenna may include parasitic elements , parabolic reflectors or horns , which serve to direct the radio waves into a beam or other desired radiation pattern . </P>
antennas that transmit an equal amount of energy in the horizontal direction are called
antennas that transmit an equal amount of energy in the horizontal direction are called
omnidirectional antennas
omnidirectional antennas