Measurement Calibrated Dipole
A calibrated dipole and a spectrum analyzer were used here. The calibrated dipole measures the maximum electromagnetic radiation – straight up (along z-axis). Two distances from the cellular phone have been used. The idea “without protection” means a situation in which the process of measuring radiation was made without the case at the moment of the call.
· The distance between bipolar and cellular phone – 35 cm
In the first measuring the cellular phone put connections on two channels (table 1.) 896.25 MHz and 902.90 MHz; measured field strength was 6.668 V/m and 5.578 V/m. After that the protection was installed and the call was repeated. The channel was on 896.30 MHz, and the field strength was 1.496 V/m.
Distance: 35 cm
· The distance between bipolar and cellular phone – 25 cm
In the second measuring the cellular phone put a connection on the channel (table 2.) 904.45 MHz; measured field strength was 7.516 V/m. Then the protection was installed and the call was repeated. The channel was on 904.45 MHz and the field strength was 2.556 V/m. Distance: 25 cm
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