Abstract: A multi-mode communication system for a mobile phone includes a plurality of antennas, a plurality of matching networks, each matching network connected to a respective one of said plurality of antennas, a plurality of near field devices, each near field device connected to a respective one of said plurality of matching networks, each pair of near field device and its associated matching network operative to either load modulate its antenna or generate an active magnetic field via its antenna, a plurality of switches, with one of said switches positioned between each of said matching networks and its respective antenna, and a controller for controlling the switched state of said plurality of switches such that one or more of said near field devices and their respective matching networks are selectively coupled to their respective antennas.

Abstract: A wireless smart card having a personal area network transceiver, such as a Bluetooth transceiver, to couple the wireless smart card with a mobile communication device, and a near field communication (NFC) and radio-frequency identification (RFID) transceiver to couple the wireless smart card to a wireless transaction device, and a transponder with a secure element to allow secure communications between the mobile communication device with the wireless smart card and the wireless smart card and the wireless transaction device is described. The wireless smart card allows, for example, contactless payment through a Bluetooth-enabled mobile communication device without modification to the mobile communication device.

Abstract: A multi-mode communication system for a mobile phone includes a plurality of antennas, a plurality of matching networks, each matching network connected to a respective one of said plurality of antennas, a plurality of near field devices, each near field device connected to a respective one of said plurality of matching networks, each pair of near field device and its associated matching network operative to either load modulate its antenna or generate an active magnetic field via its antenna, a plurality of switches, with one of said switches positioned between each of said matching networks and its respective antenna, and a controller for controlling the switched state of said plurality of switches such that one or more of said near field devices and their respective matching networks are selectively coupled to their respective antennas.

Abstract: A wireless smart card having a personal area network transceiver, such as a Bluetooth transceiver, to couple the wireless smart card with a mobile communication device, and a near field communication (NFC) and radio-frequency identification (RFID) transceiver to couple the wireless smart card to a wireless transaction device, and a transponder with a secure element to allow secure communications between the mobile communication device with the wireless smart card and the wireless smart card and the wireless transaction device is described. The wireless smart card allows, for example, contactless payment through a Bluetooth-enabled mobile communication device without modification to the mobile communication device.

Abstract: The present invention provides for a wireless radio frequency (“RF”) modem that plugs into a host computer and shares a central processing unit and memory with the host computer, wherein principal modem functions are distributed between the modem and the host computer. In one embodiment, the modem performs RF conversion, and the host computer performs baseband processing and protocol stack control. In another embodiment, the modem performs RF conversion and baseband processing, and the host computer performs protocol stack control.