Page 31 - E BOOK MICROWAVE DEVICES 2023
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PARABOLI C ANTENNA
A parabolic antenna is an antenna that uses a
parabolic reflector, a curved surface with the
cross-sectional shape of a parabola, to direct
the radio waves. The most common form is
shaped like a dish and is popularly called a
dish antenna or parabolic dish. The main
advantage of a parabolic antenna is that it
has high directivity. It functions similarly to
a searchlight or flashlight reflector to direct
radio waves in a narrow beam, or receive
radio waves from one particular direction
only. Parabolic antennas have some of the
highest gains, meaning that they can produce
the narrowest beamwidths, of any antenna
type. 26
TYPES OF MICROWAVE ANTENNA
