Abstract: An antenna for a communication device is disclosed. The antenna has a structure including a ground plane and a lid component. The lid component is conductive, substantially planar and has a planform shape which is lesser in a first lid component dimension (L1) than it is in a second lid component dimension (L2) perpendicular to the first lid component dimension (L1). The ground plane is conductive and substantially planar, and the size of the ground plane is greater than the size of the lid component. The lid component is conductively connected to the ground plane but also spaced apart from the ground plane, such that there is a space between the lid component and the ground plane, and the antenna is center fed.

Abstract: An antenna for a communication device, and also an RFID reader incorporating the antenna, are disclosed. The antenna has a structure including a ground portion and a radiating component. The radiating component has a first side, and a second side that is spaced apart from the first side. The first side has a ground edge portion which is in contact with the ground portion, and the first side extends, from its ground edge portion, away from a surface on one side of the ground portion. The second side also has a ground edge portion which is in contact with the ground portion, and the second side also extends, from its ground edge portion, away from a surface on said one side of the ground portion.

Abstract: An apparatus is disclosed which is operable to detect and identify vehicles, where individual vehicles each have at least one RFID communication device mounted thereon close to the surface on which the vehicle travels, and a vehicle's RFID communication device(s) is/are operable to transmit to the apparatus a signal indicating that vehicle's identity, the apparatus including an RFID reader, the RFID reader having an antenna which is operable to be positioned on or in the surface on which the vehicles travel, and the antenna (which may be an “adapted dipole” antenna) is operable to transmit a signal to a vehicle's RFID communication device(s) and to receive a backscattered modulated signal from a RFID communication device on that vehicle indicating that vehicle's identity, such that that vehicle is thereby detected and identified by the apparatus.

Abstract: An apparatus is disclosed which is operable to detect and identify vehicles, where individual vehicles each have at least one RFID communication device mounted thereon close to the surface on which the vehicle travels, and a vehicle's RFID communication device(s) is/are operable to transmit to the apparatus a signal indicating that vehicle's identity, the apparatus including an RFID reader, the RFID reader having an antenna which is operable to be positioned on or in the surface on which the vehicles travel, and the antenna (which may be an “adapted dipole” antenna) is operable to transmit a signal to a vehicle's RFID communication device(s) and to receive a backscattered modulated signal from a RFID communication device on that vehicle indicating that vehicle's identity, such that that vehicle is thereby detected and identified by the apparatus.