Abstract: A wireless multimode system includes: an array of N antenna elements that includes a first portion of M antenna elements and a second portion of L antenna elements; M transmission amplifiers configured to transmit, via the M antenna elements, frames of transmit data, where the frames of transmit data include transmit radar signals and transmit communication signals; M reception amplifiers configured to receive, via the M antenna elements, frames of receive data, where the frames of receive data includes receive communication signals; and L reception amplifiers configured to receive, via the L antenna elements, receive radar signals; and a resource scheduler configured to allocate bandwidth for transmit radar signals and transmit communication signals within the frames of transmit data based on one or more predetermined parameters.

Abstract: A wireless multimode system includes: an array of N antenna elements that includes a first portion of M antenna elements and a second portion of L antenna elements; M transmission amplifiers configured to transmit, via the M antenna elements, frames of transmit data, where the frames of transmit data include transmit radar signals and transmit communication signals; M reception amplifiers configured to receive, via the M antenna elements, frames of receive data, where the frames of receive data includes receive communication signals; and L reception amplifiers configured to receive, via the L antenna elements, receive radar signals; and a resource scheduler configured to allocate bandwidth for transmit radar signals and transmit communication signals within the frames of transmit data based on one or more predetermined parameters.

Abstract: In an embodiment, a millimeter-wave system includes a first circuit having M channels, one or more antennas coupled to the first circuit, and a controller that includes a resource scheduler module. The controller is configured to operate the millimeter-wave system as a radar device and as a communication device based on an output of the resource scheduler module.

Abstract: A calibration method for a phased array system comprises sequentially injecting a tone into a first plurality of antenna elements of an antenna array, receiving the tone by a second plurality of antenna elements of the antenna array through parasitic coupling between the first plurality of antenna elements and the second plurality of antenna elements, measuring a plurality of phase errors between the first plurality of antenna elements and the second plurality of antenna elements, populating a lookup table with the plurality of phase errors, and calibrating a plurality of phase shifters associated with a plurality of channels in the phased array system using the plurality of phase errors in the lookup table.

Abstract: A calibration method for a phased array system comprises sequentially injecting a tone into a first plurality of antenna elements of an antenna array, receiving the tone by a second plurality of antenna elements of the antenna array through parasitic coupling between the first plurality of antenna elements and the second plurality of antenna elements, measuring a plurality of phase errors between the first plurality of antenna elements and the second plurality of antenna elements, populating a lookup table with the plurality of phase errors, and calibrating a plurality of phase shifters associated with a plurality of channels in the phased array system using the plurality of phase errors in the lookup table.

Abstract: A wireless multimode system includes: an array of N antenna elements that includes a first portion of M antenna elements and a second portion of L antenna elements; M transmission amplifiers configured to transmit, via the M antenna elements, frames of transmit data, where the frames of transmit data include transmit radar signals and transmit communication signals; M reception amplifiers configured to receive, via the M antenna elements, frames of receive data, where the frames of receive data includes receive communication signals; and L reception amplifiers configured to receive, via the L antenna elements, receive radar signals; and a resource scheduler configured to allocate bandwidth for transmit radar signals and transmit communication signals within the frames of transmit data based on one or more predetermined parameters.

Abstract: A method for calibration in a phased array antenna includes generating, by a master clock, a reference clock signal and generating an output signal corresponding to the reference clock signal by a phase-locked loop. The method further includes generating, by a local oscillator (LO), an LO signal corresponding to the output signal and generating a transmit calibration tone corresponding to a leakage of the LO signal and a direct current signal by an in-phase and quadrature (IQ) modulator. The method further includes receiving, by a phase detector in each of a plurality of RF devices in the phased array antenna, the transmit calibration tone and determining a relative phase shift between the transmit calibration tone and the reference clock signal received at an input of each of the plurality of RF devices by the phase detector.

Abstract: Devices, methods and systems are disclosed relating to RF signals. A device may comprise a clock input terminal, a variable delay circuit coupled to the clock input terminal and a test terminal as well as a reference signal generator coupled to the variable delay circuit.

Abstract: In an embodiment, a millimeter-wave system includes a first circuit having M channels, one or more antennas coupled to the first circuit, and a controller that includes a resource scheduler module. The controller is configured to operate the millimeter-wave system as a radar device and as a communication device based on an output of the resource scheduler module.

Abstract: A method for calibration in a phased array antenna includes generating, by a master clock, a reference clock signal and generating an output signal corresponding to the reference clock signal by a phase-locked loop. The method further includes generating, by a local oscillator (LO), an LO signal corresponding to the output signal and generating a transmit calibration tone corresponding to a leakage of the LO signal and a direct current signal by an in-phase and quadrature (IQ) modulator. The method further includes receiving, by a phase detector in each of a plurality of RF devices in the phased array antenna, the transmit calibration tone and determining a relative phase shift between the transmit calibration tone and the reference clock signal received at an input of each of the plurality of RF devices by the phase detector.

Abstract: A method of operating a radio frequency (RF) module includes filtering, by a substrate integrated waveguide (SIW) band-pass filter, an RF signal propagating between an antenna and an interface structure. The antenna is disposed at a first side of a substrate. The interface structure is disposed at a second side of the substrate opposite the first side The SIW band-pass filter is disposed within the substrate between the antenna and the interface structure. The method of operating the RF module further includes transferring, by the interface structure, the RF signal between the SIW band-pass filter and an RF front end circuit.

Abstract: Devices, methods and systems are disclosed relating to RF signals. A device may comprise a clock input terminal, a variable delay circuit coupled to the clock input terminal and a test terminal as well as a reference signal generator coupled to the variable delay circuit.

Abstract: According to some embodiments, a receiving device: receives a radio frequency (RF) signal from a transmitting device over a wireless channel; performs a channel estimation of the wireless channel based on the RF signal; obtains a direct current (DC) bin measurement based on the channel estimation; determines a direct current (DC) offset correction based on the DC bin measurement; and sending the DC offset correction to the transmitting device via a local transmitter. The transmitting device: receives the DC offset correction information from the receiving device over a first wireless channel; receives data to be transmitted to the receiving device, where the DC offset correction information describing the DC offset correction; applies the DC offset correction to a transient signal that is based on the data; converts the transient signal to an RF signal; and transmits the RF signal to the receiving device over a second wireless channel.

Abstract: According to some embodiments, a receiving device: receives a radio frequency (RF) signal from a transmitting device over a wireless channel; performs a channel estimation of the wireless channel based on the RF signal; obtains a direct current (DC) bin measurement based on the channel estimation; determines a direct current (DC) offset correction based on the DC bin measurement; and sending the DC offset correction to the transmitting device via a local transmitter. The transmitting device: receives the DC offset correction information from the receiving device over a first wireless channel; receives data to be transmitted to the receiving device, where the DC offset correction information describing the DC offset correction; applies the DC offset correction to a transient signal that is based on the data; converts the transient signal to an RF signal; and transmits the RF signal to the receiving device over a second wireless channel.