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 dynamic radio frequency (RF) front end includes an antenna array, a power amplifier structure, and a low noise amplifier structure. The power amplifier structure generates a plurality of outbound RF signals from an outbound RF signal and provides the plurality of outbound RF signals to the antenna array. Each of the plurality of outbound RF signals has a different transmit phase rotation. The low noise amplifier structure receives a plurality of inbound RF signals from the antenna array and outputs one of the plurality of inbound RF signals based on a favorable phase relationship with respect to the outbound RF signal. Each of the plurality of inbound RF signals has a different receive phase rotation.
摘要:
An RFID reader is operable to receive an inbound RF signal from an RFID tag during transmission of an outbound RF signal. The inbound RF signal from the RFID tag is a modulated, backscattered signal that includes a desired RF signal component and a blocking RF signal component. The receiver section of the RFID reader includes a preprocessing module operable to process the inbound RF signal. The preprocessing module includes an adjustable attenuation module operable to attenuate the inbound RF signal to produce an attenuated inbound RF signal and an active blocking rejection module operable to increase a ratio of the desired RF signal component to blocking RF signal component in the attenuated inbound RF signal.
摘要:
Aspects of a method and system for using a Bluetooth® PLL/LO to drive FM Transmit, FM Receive, Bluetooth, and NFC functions. A Bluetooth® PLL/LO may be utilized to generate Bluetooth® signal that comprise I and Q components for use in Bluetooth® communication. The Bluetooth® signals may then be utilized by a DDFS to generate FM radio I and Q signals for FM radio reception and/or transmission. The Bluetooth® signals may also be utilized by a second DDFS to generate signals for near field communication (NFC) transmission and/or reception. The Bluetooth® signals may be kept at the same frequency, or reduced in frequency, for use in clocking the DDFS. A frequency word may also be utilized to clock the DDFS. The outputs of each DDFS may be a constant frequency while the inputs to each DDFS may vary in frequency.
摘要:
A gaming object includes an orientation sensor that generates orientation data in response to the orientation of the gaming object. An actuator that generates interaction data in response to an action of a user. A transceiver sends an RF signal to a game device that indicates the orientation data and the interaction data. The game device generates display data for display on a display device that contains at least one interactive item, and wherein the at least one interactive item is interactive in response to the orientation data and the interaction data.
摘要:
A near field RFID system includes an RFID reader and an RFID tag. The RFID reader includes a transmit path and a receive path, wherein the transmit path includes: an encoding section coupled to convert data into encoded data; a digital to analog conversion module coupled to convert the encoded data into an analog encoded signal; a power amplifier coupled to amplify the analog encoded signal; and a plurality of coils coupled to generate a plurality of electromagnetic fields from the analog encoded signal. The RFID tag that includes: a coil coupled to generate a current and a recovered signal from at least one of the plurality of electromagnetic fields; a power recovery circuit coupled to generate a voltage from the current; and a data processing section coupled to process the recovered signal, wherein the data processing section is powered via the voltage.
摘要:
A voice data and RF integrated circuit (IC) 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 that determines a selected one of the plurality of power modes based on current use characteristics of the at least one application, and generates a power mode signal based on the selected one of the plurality of power modes. An on-chip power management circuit receives the power mode signal and that generates a plurality of power supply signals based on the power mode signal.
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 mobile communication device includes a motion sensor for generating motion signals in response to motion of the mobile communication device. A motion data generation module generates motion data based on the motion signals. At least one transceiver sends the motion data to a game device in a gaming mode of operation and transceives wireless telephony data with a wireless telephony network in a telephony mode of operation.
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.