Advantech EKI-6322AG Bedienungsanleitung PDF herunterladen (Seite 54)

Appendix

Antenna concepts and Installations

I.1. Basic Terminology

- Transmit Power

The RF power coming out of the antenna port of a transmitter. It excludes the signal loss of the

coaxial cable or the gain of the antenna, and is measured in dBm, Watts or milli-Watts

- Receiver Sensitivity

The weakest RF signal level (usually in negative dBm) that a radio needs to receive in order to

demodulate and decode a data packet without errors.

- Antenna Gain

The ratio of how much an antenna increases the RF signal over a specified low-gain radiator.

Antennas achieve gain by focusing RF energy.

- EIRP

Equivalent Isotropically Radiated Power is the power actually radiated by the antenna element. It

takes into account the antenna gain.

EIRP (dBm), performance of transmitting system

= Total Output Power of device – Cable Loss + Antenna Gain

Free Space Loss (FSL)

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 60

Keine Kommentare

Advantech EKI-6322AG Bedienungsanleitung Seite 54