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Third-party Antennas: Difference between revisions
Guadagno
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* '''Input impedance''': 50 Ω | * '''Input impedance''': 50 Ω | ||
* '''Minimum input power''': 2W for 3G/LTE and 1W for WiFi | * '''Minimum input power''': 2W for 3G/LTE and 1W for WiFi | ||
* '''Frequency range''': WiFi – 2400-2500MHz, 3G/LTE – 698-960/1710-2170/2500- | * '''Frequency range''': WiFi – 2400-2500MHz, 3G/LTE – 698-960/1710-2170/2500-27 | ||
* '''Antenna polarization''' is the direction in which electric field oscillates while it propagates through environment. It is important to match broadcasting and receiving antennas polarization: it must be same polarity. In this way the maximum signal is obtained. WiFi antennas are almost always vertically polarized, while mobile antennas are either vertically polarized or cross polarized | * '''Antenna polarization''' is the direction in which electric field oscillates while it propagates through environment. It is important to match broadcasting and receiving antennas polarization: it must be same polarity. In this way the maximum signal is obtained. WiFi antennas are almost always vertically polarized, while mobile antennas are either vertically polarized or cross polarized | ||
* '''Antenna gain''' describes how much power is radiated in the direction of peak radiation compared to isotropic emitter. Different units are used to express antenna gain | * '''Antenna gain''' (guadagno) describes how much power is radiated in the direction of peak radiation compared to isotropic emitter. Different units are used to express antenna gain | ||
** Decibels (dB) – 10 dB means 10 times the energy relative to an isotropic antenna in the peak direction of radiation | ** Decibels (dB) – 10 dB means 10 times the energy relative to an isotropic antenna in the peak direction of radiation | ||
** dBi (decibels relative to an isotropic emitter) is the same as dB because isotropic antenna has gain of 1dB | ** dBi (decibels relative to an isotropic emitter) is the same as dB because isotropic antenna has gain of 1dB | ||