Page 20 - E BOOK MICROWAVE DEVICES 2023
P. 20
Typical polar radiation plot. Most antennas
show a pattern of "lobes" or maxima of
radiation. In a directive antenna, shown here,
the largest lobe, in the desired direction of
propagation, is called the "main lobe". The
other lobes are called "sidelobes" and usually
represent radiation in unwanted directions.
The minor lobe in the opposite direction
(180°) from the main lobe is called the "back
lobe".
15
PROPERTIES OF ANTENNA
