Method and apparatus augmenting functionality of antenna-in-module of user equipment to proximity detection besides wireless communication

A method augmenting functionality of an antenna-in-module (AiM) of a user equipment (UE) to proximity detection besides wireless communication;

• the method being executing by the UE, the AiM comprising a radiator set and a channel circuit set;
• the radiator set including one or more radiators, the channel circuit set including one or more channel circuits, each said channel circuit coupled to an associated said radiator in the radiator set, and the method comprising:
• causing a first subset of the channel circuit set to transmit outgoing electromagnetic (EM) waves by circular polarization of a first rotation sense;
• causing a second subset of the channel circuit set to receive incoming EM waves by circular polarization of a second rotation sense, and accordingly obtaining one or more received detection signals;
• and
• executing the proximity detection according to the one or more received detection signals;
• wherein:
• the first rotation sense and the second rotation sense are different.