摘要:
A multi-mode RFID tag includes a power generating and signal detection module, a baseband processing module, a transmit section, a configurable coupling circuit, and an antenna section. In near field mode, the configurable coupling circuit is operable to couple the transmit section to a coil or inductor in the configurable coupling circuit to transmit an outbound transmit signal using electromagnetic or inductive coupling to an RFID reader. In far field mode, the configurable coupling circuit is operable to couple the transmit section to the antenna section, and the multi-mode RFID tag then utilizes a back-scattering RF technology to transmit the outbound transmit signal to RFID readers.
摘要:
A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要:
An integrated circuit (IC) includes an RF section, a DSP, and a plurality of processors. The RF section and the DSP process an inbound RF signal to produce inbound data and process outbound data to produce an outbound RF signal. In addition, the DSP converts an outbound analog audio signal into an outbound digital audio signal and converts an inbound digital audio signal into an inbound analog audio signal. A first processor converts the inbound data into the inbound digital audio signal and converts the outbound digital audio signal into the outbound data. A second processor performs a user application that includes at least one of generation of the inbound analog audio signal and generation of the outbound analog audio signal and performs an operating system algorithm to coordinate operation of the user application.
摘要:
A configurable antenna assembly includes an antenna structure and a configurable antenna interface. The antenna structure is operable, in a first mode, to provide a first antenna structure and a second antenna structure, wherein the first antenna structure receives an inbound radio frequency (RF) signal and the second antenna structure transmits an outbound RF signal. The configurable antenna interface is operable in the first mode to provide a first antenna interface and a second antenna interface, wherein the first antenna interface is configured in accordance with a receive adjust signal to adjust at least one of phase and amplitude of the inbound RF signal, and wherein the second antenna interface is configured in accordance with a transmit adjust signal to adjust at least one of phase and amplitude of the outbound RF signal.
摘要:
An RFIC includes an RF section, a memory interface, a display interface, an audio codec, a bus matrix, and a processing unit. The RF section converts a first inbound RF signal into a first inbound symbol stream and converts a second inbound RF signal into a second inbound symbol stream. The memory interface is operably coupled to retrieve a video file from memory and the display interface is operable to provide video data to a display. The audio codec converts an output digital signal into an output voice signal. The processing unit converts the first inbound symbol stream into streaming video data; converts the second inbound symbol stream into the output digital signal; and facilitates providing, via the bus matrix, at least one of: the video file to the display interface as the video data; the streaming video data to the display interface as the video data; and the digital output signal to the audio codec.
摘要:
A communication device includes a voice data and RF integrated circuit (IC) that includes a memory module that stores a least one application as a plurality of operational instructions, the at least one application having a plurality of power modes that each correspond to one of a plurality of use characteristics. A processing module executes the plurality of operational instructions and determines a selected one of the plurality of power modes based on current use characteristics of the at least one application, and the generates a power mode signal based on the selected one of the plurality of power modes. An off-chip power management circuit receives the power mode signal and that generates a plurality of power supply signals to the voice data and RF IC based on the power mode signal.
摘要:
A wireless communication device includes an integrated circuit (IC) and an antenna system. The IC includes a processing module and a transceiver section. The processing module establishes a wireless communication protocol, converts outbound data into an outbound symbol stream, converts an inbound symbol stream into inbound data, and establishes operational parameters. The transceiver section converts an inbound RF signal into the inbound symbol stream and converts the outbound symbol stream into an outbound RF signal. The antenna system provides a plurality of antenna structures corresponding to the plurality of operational modes of the wireless communication device, wherein the antenna system provides one of the plurality of antenna structures in accordance with the operational parameters to transceive the inbound and outbound RF signals.
摘要:
A programmable antenna assembly includes a configurable antenna structure, a configurable antenna interface, and a control module. The configurable antenna structure includes a plurality of antenna elements that, in response to an antenna configuration signal, are configured elements into at least one antenna. The configurable antenna interface module is coupled to the at least one antenna and, based on an antenna interface control signal, provides at least one of an impedance matching circuit and a bandpass filter. The control module is coupled to generate the antenna configuration signal and the antenna interface control signal in accordance with a first frequency band and a second frequency band such that the at least one antenna facilitates at least one of transmitting and receiving a first RF signal within the first frequency band and facilitates at least one of transmitting and receiving a second RF signal within the second frequency band.
摘要:
A radio frequency (RF) integrated circuit (IC) operable to support wireless communications is provided. In one embodiment, the RF IC includes an advanced high-performance (AHB) bus matrix, a microprocessor core coupled to the AHB bus matrix, a plurality of processing modules wherein each processing module is operable to support one or more functions of the RF IC, and a plurality of power islands. Each power island is associated with one or more functions of the RF IC. This arrangement allows power islands coupled to the processing modules associated with the one or more functions associated with the power island to supply power for the processing modules associated with the one or more functions associated with the power island. Power from the power island(s) to the processing module(s) may be reduced or secured when the one or more functions associated with the power island is not required.
摘要:
The position of a mobile gaming object within a video gaming environment is determined using at least one combined Radio Frequency (RF) signal. Each combined RF signal includes at least a pair of RF signals that have a known relationship therebetween. Based on signal information representative of properties of the combined RF signal as received and the known relationship, respective distances between the mobile gaming object and a plurality of transmitter/receivers can be determined. The position of the mobile gaming object within the video gaming environment is then determined from the distances.