ratio of transmitted power and received power
EIRP (Dbm)= Output Power(Dbm)-Losses(from cables & adapters)+Antenna Gain(Db)
microstip patch array antenna is basically ,thecollection of antenna that give the double directive gain
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A simplified explanation is that the antenna does for radio waves what a lens does for light because of physics.
Some advantages of the Yagi- Uda Antenna include that this is a widely used design and low cost. The construction also is simple. Some disadvantages are that the receiver of the Yagi-Uda Antenna may have problem receiving signal.
Gain in antenna propagation refers to the measure of the directionality and efficiency of an antenna in transmitting or receiving electromagnetic waves. It represents the ability of the antenna to focus its radiated power in a specific direction, usually compared to an isotropic radiator. A higher gain indicates a more focused radiation pattern and improved performance in that direction.
It depends upon the type of antenna. For example, a Yagi antenna's gain can be increased by adding elements. A parabolic antenna's gain can be increased by increasing the diameter of the antenna. All antennas can have their gain increased by lowering the loss of the feed line. By replacing regular coaxial cable with nitrogen pressurized coax, the overall gain at the receiving end can be increased. Gain can also be increased by inserting an amplifier between the antenna and the receiver. Another method of increasing gain is to reduce the VSWR, or voltage standing wave ratio.
an antenna with 0 gain. What you hear and transmit is what you get from your 2-way radio.
increases by 6 dB
The size of an antenna depends upon the frequecny of the RF signal and the gain.
EIRP (Dbm)= Output Power(Dbm)-Losses(from cables & adapters)+Antenna Gain(Db)
microstip patch array antenna is basically ,thecollection of antenna that give the double directive gain
Antennas provide so called passive gain, which means it comes from particular shape of the antennaThe gain of an antenna is a passive phenomenon - power is not added by the antenna, but simply redistributed to provide more radiated power in a certain direction than would be transmitted by an isotropic antenna. If an antenna has a gain greater than one in some directions, it must have a gain less than one in other directions, since energy is conserved by the antenna.SOURCE: wikipedia.com
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The off-axis gain of a Cassegrain antenna refers to the antenna's ability to receive or transmit signals effectively when the signal source is not aligned with the main axis of the antenna. This gain is typically lower than the maximum gain achieved when the source is directly in line with the antenna's focus. The design of the Cassegrain antenna, which includes a parabolic reflector and a secondary hyperbolic reflector, helps maintain reasonable performance off-axis, but the gain will vary based on the angle and distance from the boresight. Off-axis gain is an important consideration in applications like satellite communication, where signals may come from various directions.
Antenna gain of base station for a specific user depends on antenna pattern, antenna orientation (azimuth and tilt) and user's coordinates with respect to base station.
A simplified explanation is that the antenna does for radio waves what a lens does for light because of physics.