US Patent 11544517 RFID antenna

A radio-frequency identification (RFID) antenna for a vending machine includes a controller and configured to selectively provide an item stored therein to a user. The RFID antenna includes a pair of short-circuited emitters, an antenna divider disposed between said pair of short-circuited emitters, a pair of cables each comprising a pair of low signal attenuation and feed points and each connecting respective one of said pair of short-circuited emitters to said antenna divider; and a connector coupled to said antenna divider for connecting said antenna divider to the controller of the vending machine.