Abstract: Methods and systems for estimating a distance to an object are described. In an example, a device can receive a reflected signal of a modulated signal being used in a wireless transmission of data. The reflected signal can be a reflection of the modulated signal from at least one object. The device can estimate a distance to the at least one object based on the modulated signal and the reflected signal. Further, the device can use the estimated distance to image a scenery including the at least one object.

Abstract: Systems and methods for operating a beamforming circuit are described. A processor can activate a transmitting element among a plurality of transmitting elements of a beamforming circuit. The processor can activate a receiving element among a plurality of receiving elements of a beamforming circuit. The processor can receive a direct current (DC) signal that represents phase and amplitude of the activated transmitting element and the activated receiving element. The processor can adjust a setting of the beamforming circuit to receive additional DC signals that represent phases and amplitudes of the activated transmitting element and the activated receiving element under the adjusted setting. The processor can determine calibration values for the beamforming circuit based on the DC signal and the additional DC signals.

Abstract: A processor may calibrate a first actuator electrically coupled to a transconductance stage of the frequency conversion circuit. The transconductance stage may be configured to receive a differential signal input. Calibrating a first actuator may adjust a first basis vector associated with a differential direct current (DC) output of the transconductance stage. A processor may calibrate a second actuator electrically coupled to receive the differential current output of the transconductance stage and electrically coupled to a set of commutating devices of the frequency conversion circuit. The commutating devices may be configured to receive differential LO inputs. Calibrating a second actuator may adjust a second basis vector associated with a differential impedance of the set of commutating devices. A processor may offset responsive to adjusting the first basis vector and the second basis vector, the first leakage basis vector and second leakage basis vector of the LO leakage signal.

Abstract: A circuit comprises a set of ports of a first type arranged symmetrically about an axis of symmetry of the circuit, and a digital reassigner configured to reassign an original port of the set of ports to a reassigned port of the set of ports located on an opposite side of the axis of symmetry.

Abstract: A phased array antenna includes an antenna array substrate having a plurality of antenna elements. At least two beamformers are coupled to the plurality of antenna elements. At least two filters support different frequency bands and are respectively coupled to the at least two beamformers. A frequency converter is coupled to the at least two filters, the frequency converter including one intermediate frequency (IF) port and at least two radio frequency (RF) ports. The one IF port of the frequency converter is configured to support the at least two beamformers via the at least two RF ports. A first beamformer of the at least two beamformers is coupled to a first filter of the at least two filters to form a first beam in a direction different than a second beamformer of the first two beamformers coupled to a second filter of the at least two filters.

Abstract: Systems and methods for operating a phased array are described. In an example, a system may convert a desired beam direction of a desired beam into at least one phase slope parameter. The phased array may include a plurality of antennas connected to a plurality of front-end circuits of a beam forming circuit, and each antenna may be connected to a respective front-end circuit. For each antenna among the plurality of antennas, the system may determine a phase shift parameter of the antenna based on the at least one phase slope parameter and a physical location of the antenna. For each antenna among the plurality of antennas, the system may map the determined phase shift parameter of the antenna to control settings for a front-end circuit connected to the antenna.

Abstract: A phased array antenna includes an antenna array substrate having a plurality of antenna elements. At least two beamformers are coupled to the plurality of antenna elements. At least two filters support different frequency bands and are respectively coupled to the at least two beamformers. A frequency converter is coupled to the at least two filters, the frequency converter including one intermediate frequency (IF) port and at least two radio frequency (RF) ports. The one IF port of the frequency converter is configured to support the at least two beamformers via the at least two RF ports. A first beamformer of the at least two beamformers is coupled to a first filter of the at least two filters to form a first beam in a direction different than a second beamformer of the first two beamformers coupled to a second filter of the at least two filters.

Abstract: An example operation may include one or more of receiving, via a network, tag data that is read from a tag associated with a physical object and signed with a key assigned to the tag, determining, via a blockchain peer, that the signed tag data is validly signed based on a corresponding key pair of the tag which is accessible to the blockchain peer, determining, via the blockchain peer, whether the tag data satisfies of one or more predefined conditions of the physical object, and storing the determination via a blockchain database.

Abstract: Methods and system for shaping radiation patterns are described. Given a plurality of radiation patterns corresponding to spatial combinations of a plurality of signals, a system can perform beam switching between the given plurality of radiation patterns within a configured time. The beam switching within the configured time can create a beam having a new radiation pattern within the signal modulation bandwidth.

Abstract: A processor may calibrate a first actuator electrically coupled to a transconductance stage of the frequency conversion circuit. The transconductance stage may be configured to receive a differential signal input. Calibrating a first actuator may adjust a first basis vector associated with a differential direct current (DC) output of the transconductance stage. A processor may calibrate a second actuator electrically coupled to receive the differential current output of the transconductance stage and electrically coupled to a set of commutating devices of the frequency conversion circuit. The commutating devices may be configured to receive differential LO inputs. Calibrating a second actuator may adjust a second basis vector associated with a differential impedance of the set of commutating devices. A processor may offset responsive to adjusting the first basis vector and the second basis vector, the first leakage basis vector and second leakage basis vector of the LO leakage signal.

Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.

Abstract: An antenna that can be embedded in a computer system or device is described. In an example, the antenna includes a feed operable to transmit and receive power. The antenna includes a first arm being extended from the feed towards a first direction to form a first partial loop. The antenna further includes a second arm being extended from the feed towards a second direction to form a second partial loop. The second direction is different from the first direction.

Abstract: Devices, computer-implemented methods, and systems that can facilitate radio frequency identification components are provided. According to an embodiment, a device can comprise a memory that can be coupled to an integrated circuit device that can have a processor and an accelerator component that can execute a cryptographic module. The device can further comprise a radio frequency identification device that can be coupled to the integrated circuit device that can communicate with a radio frequency identification reader device based on the cryptographic module.

Abstract: A device includes a transmitter. A main antenna is coupled to the transmitter. A matching network coupled to the transmitter and configured to match an impedance of the main antenna, wherein one or more components of the matching network provide a desired radiation.

Abstract: An example operation may include one or more of receiving, via a network, tag data that is read from a tag associated with a physical object and signed with a key assigned to the tag, determining, via a blockchain peer, that the signed tag data is validly signed based on a corresponding key pair of the tag which is accessible to the blockchain peer, determining, via the blockchain peer, whether the tag data satisfies of one or more predefined conditions of the physical object, and storing the determination via a blockchain database.

Abstract: Methods and systems for estimating a distance to an object are described. In an example, a device can receive a reflected signal of a modulated signal being used in a wireless transmission of data. The reflected signal can be a reflection of the modulated signal from at least one object. The device can estimate a distance to the at least one object based on the modulated signal and the reflected signal. Further, the device can use the estimated distance to image a scenery including the at least one object.

Abstract: Methods and system for shaping radiation patterns are described. Given a plurality of radiation patterns corresponding to spatial combinations of a plurality of signals, a system can perform beam switching between the given plurality of radiation patterns within a configured time. The beam switching within the configured time can create a beam having a new radiation pattern within the signal modulation bandwidth.

Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.

Abstract: A radio frequency identification (RFID) system may include a plurality of RFID readers and RFID tags. A RFID reader may include an antenna configured to operate at a first frequency and transmit a first beam of a first beam width to the plurality of RFID tags. The RFID antenna may further include an antenna array including a plurality of antennas configured to operate at a second frequency. The antenna array may be configured to transmit a second beam of a second beam width to the plurality of RFID tags. The RFID reader may receive backscatter signals and tag data from the plurality of RFID tags. The RFID reader may locate the plurality of RFID tags based on the backscatter signals and a direction of the second beam. The RFID reader may generate a 3D map of the tag data based on the locations of the plurality of RFID tags.

Abstract: A radio frequency identification (RFID) system. An RFID tag may include multiple antennas connected with associated circuitry. An RFID tag's multiple antennas and associated circuitry are connected in parallel, and output power of the multiple associated circuitry can be combined. Each of the multiple antennas can be tuned for a different operating property or region. An RFID reader can include multiple antennas connected with associated circuitry. RFID reader's multiple antenna interfaces connect with a baseband processor, which can integrate resources of the reader's multiple antennas and associated circuitry. RFID tag and/or reader can be configured to support wireless channel diversity in enhancing at least one of power delivery and communication link budget.