摘要:
In one embodiment, an integrated circuit antenna array includes: a substrate, a plurality of antennas adjacent the substrate; and an RF network adjacent the substrate, the RF feed network coupling to a distributed plurality of amplifiers integrated with the substrate, wherein the RF feed network and the distributed plurality of amplifiers are configured to form a resonant network such that if a timing signal is injected into an input port of the RF network, the resonant network oscillates to provide a globally synchronized RF signal to each of the antennas.
摘要:
In one embodiment, an integrated phase shifter includes: a plurality of stages, wherein each stage comprises: a transistor amplifier configured to amplify a voltage signal received at an input node into an amplified voltage signal at an output node according to a gain, wherein the transistor amplifier is configured such that the gain is proportional to a bias signal; an integrated inductor loading the output node, wherein the gain of the transistor amplifier is also proportional to an inductance of the integrated inductor; and a varactor diode loading the output node, wherein the varactor diode has a variable capacitance responsive to a control voltage.
摘要:
In one embodiment, an RF disturbance detection system is provided that includes: an RF interrogator configured to transmit an RF interrogation signal; and a plurality of RF transceiver modules configured to respond to the RF interrogation signal by transmitting unique RF response signals, wherein the RF interrogator is further configured to periodically interrogate the RF transceiver modules to detect the power of the corresponding response signals so as to detect any changes in the response signal powers over time.
摘要:
In one embodiment, an RFID reader and active tag (RAT) includes: a first antenna; a second antenna orthogonally aligned with the first antenna; an RFID interface operable to generate RF transmissions to the interrogate RFID tags; a fixed phase variable gain beam forming interface coupled to the first and second antennas and to the RFID interface, the variable gain beam forming interface being operable to independently adjust a set of gains for the RF transmissions from the RFID interface to the antennas so as to steer an interrogating RF transmission throughout the space to obtain RFID data from the RFID tags within the space; a third antenna; and a wireless interface configured to communicate through the third antenna with an access point, the wireless interface being operable to transmit the RFID data to the access point.
摘要:
In one embodiment, wafer-scale antenna module is provided that includes: a substrate having a first surface and an opposing second surface; a plurality of conductive contact regions extending from the first surface into the substrate towards the second surface; active circuitry formed in the substrate adjacent the second surface, the active circuitry electrically coupled to the conductive contact regions; an insulating layer adjacent the first surface, the insulating layer forming a plurality of vias arranged corresponding to the plurality of conductive contact regions, each via forming an opening at the corresponding conductive contact region; and a plurality of antennas formed on the insulating layer corresponding to the plurality of vias; wherein each via contains an electrical conductor to electrically couple the corresponding contact region to the antenna corresponding to the via, whereby a resulting separation between the driving circuitry and the antennas aids an electrical isolation of the driving circuitry from the antennas.
摘要:
In accordance with an embodiment, an integrated circuit is provided that includes a substrate, a plurality of dipoles adjacent the substrate; an RF feed network adjacent the substrate and coupled to drive a plurality of output nodes with an RF signal; and a plurality of tuning circuits corresponding to the plurality of dipoles, each tuning circuit configured to load an RF signal from a corresponding one of the output nodes with a variable capacitance responsive to a control signal, the loaded RF signal driving the dipole antenna corresponding to the tuning circuit.
摘要:
In one embodiment, a wafer scale radar antenna module (WSAM) is provided that includes: a substrate; a plurality of antennas adjacent the substrate; an RF feed network adjacent the substrate, the RF feed network coupling to a distributed plurality of amplifiers integrated with the substrate, wherein the RF feed network and the distributed plurality of amplifiers are configured to form a resonant network such that if a timing signal is injected into an input port of the RF feed network, the resonant network oscillates to provide a globally synchronized RF signal to a plurality of integrated antenna circuits, wherein each integrated antenna circuits includes a corresponding subset of antennas from the plurality of antennas, and wherein each integrated antenna circuit includes a pulse shaping circuit having a plurality of selectable delay paths, each pulse shaping circuit being configured to rectify and level shift a version of the globally synchronized signal through selected ones of the selectable delay paths to provide an pulse train output signal; and a controller operable to control each integrated antenna circuit such that only selected pulses from the pulse train output signal are transmitted through the integrated antenna circuit's subset of antennas to form transmitted pulses.
摘要:
In one embodiment, an RFID reader and active tag (RAT) includes: a first beam forming means for interrogating a plurality of RFID tags using at least a first set of two antennas coupled to a first fixed phase feed network, the beam forming means being configured to adjust gains in the first fixed phase feed network to scan with respect to the plurality of RFID tags; and a second beam forming means for uploading RFID data from the interrogated plurality of RFID tags to an external access point using at least a second set of two antennas coupled to a second fixed phase feed network, the beam forming means being configured to adjust gains in the second fixed phase feed network to direct its RF beam at the external access point.
摘要:
In one embodiment, an integrated circuit antenna array is provided that includes: a low-voltage substrate; a high-voltage substrate; a digital-to-analog converter (DAC) integrated with the low-voltage substrate, the DAC being operable to receive a digital command and convert it into an analog voltage; a voltage-controlled oscillator (VCO) integrated with the low-voltage substrate, the VCO providing an RF signal having an output frequency responsive to the analog voltage; a plurality of switching power amplifiers integrated with the high-voltage substrate, each switching power amplifier receiving an RF signal from the low-voltage substrate and providing an amplified RF output signal; and a plurality of antennas adjacent the high-power substrate, each antenna associating with a corresponding one of the switching power amplifier so as to transmit the amplified RF output signal from the corresponding switching power amplifier.
摘要:
In one embodiment, an impulse radio is provided that includes: a signal source operable to provide a sinusoidal source signal; a pulse shaping circuit having a plurality of selectable delay paths, the pulse shaping circuit being configured to rectify and level shift the sinusoidal source signal through selected ones of the selectable delay paths to provide an impulse signal output; a substrate; a plurality of antennas adjacent the substrate; an RF feed network adjacent the substrate and coupled to the pulse shaping circuit, the RF feed network being configured to transmit the impulse signal output to the plurality of antennas, and a distributed plurality of amplifiers integrated with the substrate and operable to amplify the impulse signal output propagated through RF feed network.