The lift car cellular repeater coverage solution. I was designed to to provide cellular mobile coverage into the lift car system. The solution is based on employing an active bi-directional repeater modules to receive off-air cellular signals, amplify them and transmit the signal/s into the lift car. The system provides an innovative step by employing approved cellular repeaters designed to operate in a mobile environment to re-relay signals from a server antenna in the lift shaft into the lift car.

摘要

#$%^&*AU2020101259A420201022.pdf#####ABSTRACT The present invention proposes a wireless repeater system, which include a lift/elevator cart server antenna, a lift shaft server antenna and a lift car donor antenna. The lift/elevator cart server antenna is installed inside the lift car, the lift shaft server antenna is installed external to the lift car but disposed within the lift tower structure, which is wirelessly connected with the lift cart serer donor antenna installed on the outside of the lift cart, and the lift car donor antenna is configured to receive RF signals from the lift shaft server antenna which is connected to the operator(s) via coaxial cable. The lift cart server antenna is directly connected with the lift cart serer donor antenna for enhancing the RF signal coverage within the lift cart. The wireless repeater system also includes a RF signal combiner combining RF signals transmitted by the wireless network operators.