UK
RFID-UHF-Antennas
19
USA: EIRP power is limited according to FCC Part 15 to 4 W (36 dBm)�
1� Antenna gain smaller or equal to 6 dBi
Antenna input power is equal to 30 dBm (1 W)
2� Antenna gain larger than 6 dBi (e�g� 7 dBi)
Antenna input power must be reduced: 36 dBm – 7 dBi = 29 dBm (0.794 W)
10 Abbreviations
Abbreviations used in this application notes:
DIN
German Institute for Standardisation
EIFF
Effective Isotropic Field Factor, shows the field isolation of far-field to near-field standard-
ised to an isotropic radiator�
EIRP
Equivalent Isotropically radiated power
EN
European Standard
ERP
Effective Radiated Power
RFID
Radio Frequency Identification
SAR
Specific Absorption Rate
UHF
Ultra High Frequency