How can I increase the sensitivity of my antenna?
To double the range, total antenna gain must increase to 16 dB. This can be achieved by removing one 2 dB antenna and installing a 14 dB high-gain directional antenna at one end of the wireless link. A Yagi-style antenna is an effective solution for achieving 14 dB of gain when transmitting in the 902 to 928 MHz band.
What is Tx gain?
In a transmitting antenna, the gain describes how well the antenna converts input power into radio waves headed in a specified direction. A plot of the gain as a function of direction is called the gain pattern or radiation pattern.
What is the significance of gain of an antenna?
Antenna gain indicates how strong a signal an antenna can send or receive in a specified direction. Gain is calculated by comparing the measured power transmitted or received by the antenna in a specific direction to the power transmitted or received by a hypothetical ideal antenna in the same situation.
Can you add Antenna gain to RX and TX?
If I then attach an antenna with a gain of -2dBi do I then have an RF output power of 8dBm If the same antenna is at both ends of the link (or it’s a transceiver using the antenna for RX and Tx) then yes.
Why do you need 2 dB of gain in an antenna?
Yes it’s a bit confusing but an antenna with -2 dB of gain compared to the (i)sotropic “standard” means you need 2 dB more power into your receiver’s antenna because you have degraded the signal with the bad antenna. And, because you have degraded the power output by 2 dB, your effective power out is 2 dB lower at 8 dBm
Which is better an isotropic antenna or a loss antenna?
In practice, an antenna with loss compared to an isotropic antenna is a pretty crappy antenna and a receiver with a sensitivity of only -10 dBm is also pretty crappy. Thanks for contributing an answer to Electrical Engineering Stack Exchange!