User`s guide

BreezeNET DS.11 Series User’s Guide
C-4
R is the distance between the transmitting and receiving
antennas (expressed in Km).
At 2.4 GHz, this formula is: 100+20xLog(R
Km
)
Antenna Characteristics
Isotropic Antenna
A hypothetical antenna having equal radiation intensity in all
directions. Used as a zero dB gain reference in directivity
calculation (gain).
Antenna Gain
A measure of directivity. It is defined as the ratio of the
radiation intensity in a given direction to the radiation
intensity that would be obtained if the power accepted by the
antenna was radiated equally in all directions (isotropically).
Antenna gain is expressed in dBi.
Radiation Pattern
A graphical representation in either polar or rectangular
coordinates of the spatial energy distribution of an antenna.
Side Lobes
The radiation lobes in any direction other than that of the
main lobe.