coupling factor of the same antenna

wht is the coupling factor between same antenna
(i.e) coupling factor between transmiter1 and receiver of the same antenna

anandhi,

You might have a particular scenario in mind when you ask this question, but many of us out here do not know that scenario!

Can you add a little more information, such as, what this pertains to, it is WiFi or LTE or 2-way radio or about theoretical radio propagation between two antennas, as where a transmitter is connected to one antenna and another antenna is connected to a receiver capable of measuring received signal strength?

Jim

it comes under the category of Wi-Fi
transmiter has two antennas and receiver has two antennas
let me give our system model pls find us a solution