User`s guide

Appendix
BreezeNET PRO.11
9-21 User’s
Guide
Figure 9-10. Radiation Pattern of Directional Antenna
Antenna Beamwidth
The directiveness of a directional antenna. Defined as the angle between two half-
power (-3 dB) points on either side of the main lobe of radiation.
6\VWHP&KDUDFWHULVWLFV
Receiver Sensitivity
The minimum RF signal power level required at the input of a receiver for certain
performance (e.g. BER).
EIRP (Effective Isotropic Radiated Power)
The antenna transmitted power. Equal to the transmitted output power minus cable
loss plus the transmitting antenna gain.
P
out
Output power of transmitted in dBm
Ct Transmitter cable attenuation in dB
Gt Transmitting antenna gain in dBi
Gr Receiving antenna gain in dBi
Pl Path loss in dB
Cr Receiver cable attenuation is dB
Si Received power level at receiver input in dBm
Ps Receiver sensitivity is dBm
Si = P
out
- Ct + Gt - Pl + Gr - Cr
EIRP = P
out
- Ct + Gt