The operation range of a radio modem varies depending on the transmission power, antenna gain and mast height, and environment.
12.
Even if the antennas are not more than a quarter of the wavelength apart, much of the achievable antenna gain is realized.
13.
This gain depends on factors such as carrier frequency, antenna heights and antenna gain, for example due to directional antennas; and
14.
Neglecting electrical inefficiency, the antenna gain is equal to the array of dipoles ) can be considered when more substantial directivity is desired.
15.
Antenna gain can also be measured in dBd, which is gain in Decibels compared to the maximum intensity direction of a half wave dipole.
16.
Cell horizontal radius varies depending on antenna height, antenna gain, and propagation conditions from a couple of hundred meters to several tens of kilometres.
17.
These greatly increase the antenna gain, magnifying the emitted RF energy toward the horizon, which in turn greatly increases a station's broadcast range.
18.
Antenna-related research programs characterize antenna gain characteristics, develop phased array antenna concepts, and develop various kinds of reflector-type and lens antennas.
19.
Beam steering is the most extended application and consists in steering the direction of maximum radiation to maximize the antenna gain in a link with mobile devices.
20.
Large dishes have higher antenna gain, which can be an advantage when used with DBS signals such as Dish Network and DirecTV, virtually eliminating rain fade.
