A passive antenna is an antenna that is not powered by an amplifier.
An active antenna is an antenna which has an amplifier attached very closely to it. The antenna/amplifier system is called an active antenna. It is used for receiving signals only. The idea is to set the signal-to-noise ratio (SNR) before the signal travels along a transmission line where it is susceptible to interference and loss.
it depends on existing amplifier or not , if after antenna there's an amplifier it called active else it called passive which less sensitive that active .
By using an antenna
An active antenna is powered antenna, this includes a RF amplifier and a power supply so it must be "plugged in" somewhere. A standard "passive" antenna has no amplifier.
A satellite radio antenna is typically considered a passive device. It receives signals transmitted from satellites but does not amplify or generate its own signals. The antenna captures the radio waves and sends them to a receiver, which processes the signals for audio output.
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
In electronics any device that just pass along a signal by its characteristics is defined as passive.
You don't.
unplug the electrical from the antenna. replace antenna.
"to be called" is passive, but "what do you prefer" is active. To make "to be called" active, you could say "what do you prefer that others call you?" To make "what do you prefer" passive, you would say "what is preferred by you..."
If you do not see an external antenna, then it is in either the front or rear windshield. Look closely and you will see the tiny wires that make up the antenna.