So, basically it is equivalent area that is what will be the area that what will be the effective received signal power or the gain of your antenna divided by A iso this like saying you know what is your gain relative to the gain of a isotropic antenna and if you were to express it in dB you will also see a dB I represented there and it that says it is dB with respect to an isotropic radiator.
तो, मूल रूप से , जहाँ dBi का मतलब है आइसोट्रोपिक रेडिएटर के संबंध में dB।