Below roof DECT BS and NLOS UMTS BS 1 Interference to NLOS UMTS base 250 mW (24 dBm) terminal power 9 -12 dBi antenna Dipole antenna The total emitted.

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Presentation transcript:

Below roof DECT BS and NLOS UMTS BS 1 Interference to NLOS UMTS base 250 mW (24 dBm) terminal power dBi antenna Dipole antenna The total emitted power and the total reflected power is the same for any antenna, 250 mW, but the power that is directed towards the roof top and will reach the UMTS base station is higher from a dipole or an isotropic antenna, than from the horizontal lobe of the directional antenna Thus typical DECT outdoor enterprise below roof top 6-12 dBi antennas, do not increase the probability to interfere with NLOS UMTS base stations compared to an isotropic antenna

Below roof DECT BS and NLOS UMTS BS 2 Interference to NLOS UMTS base dBi antenna Dipole antenna The total emitted power and the total reflected power is the same for any antenna, 250 mW, but the power that is directed towards the roof top and will reach the UMTS base station is higher from a dipole or an isotropic antenna, than from the horizontal lobe of the directional antenna Thus typical DECT outdoor enterprise below roof top 6-12 dBi antennas, do not increase the probability to interfere with NLOS UMTS base stations compared to an isotropic antenna 250 mW (24 dBm) terminal power 2-4 W terminal power into a dipole

Below roof DECT BS and NLOS UMTS BS 3 Interference to NLOS UMTS base dBi antenna Isotropic antenna The total emitted power and the total reflected power is the same for any antenna, 250 mW, but the power that is directed towards the roof top and will reach the UMTS base station is higher from a dipole or an isotropic antenna, than from the horizontal lobe of the directional antenna Thus typical DECT outdoor enterprise below roof top 6-12 dBi antennas, do not increase the probability to interfere with NLOS UMTS base stations compared to an isotropic antenna 250 mW (24 dBm) terminal power 2-4 W terminal power

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