Abstract: Some embodiments relate to systems and methods for communication of electronic signals using a communication device. The communication device includes a first transmitter, a second transmitter, a first antenna, coupled to the first transmitter, a second antenna, coupled to the second transmitter, a memory, and a processor, coupled to the memory, the first transmitter, and the second transmitter. The memory includes instructions that, when executed by the processor cause the processor to generate a long-range communication signal, generate a short-range communication signal, transmit the long-range communication signal from the first transmitter over the first antenna, transmit the short-range communication signal from a second transmitter over the second antenna, generate a charging signal, and transmit the charging signal from at least one of the first transmitter over the first antenna and the second transmitter over the second antenna.

Abstract: The present disclosure relates to a method for installation of a phased array antenna receiving a signal, the method comprising: determining that a higher directivity of the phased array antenna is achievable; determining an orientation of the phased array antenna at which the higher directivity is achievable; and providing instructions for adjusting the orientation of the phased array antenna from an initial orientation to the determined orientation.

Abstract: Disclosed herein is a phased array antenna system that includes: a first array of antenna elements having a first and second antenna element; a second array of antenna elements having a third and fourth antenna element; a beamforming integrated circuit (IC) coupled to the first and second arrays; and a set of transmission lines coupling the beamforming IC to the first and second arrays. The first and second arrays are parallel to and facing in opposite directions of each other. The set of transmission lines is configured to delay radio frequency (RF) signals from the beamforming IC to first and third antenna elements.

Abstract: Disclosed herein is a phased array antenna system that includes: a first array of antenna elements having a first and second antenna element; a second array of antenna elements having a third and fourth antenna element; a beamforming integrated circuit (IC) coupled to the first and second arrays; and a set of transmission lines coupling the beamforming IC to the first and second arrays. The first and second arrays are parallel to and facing in opposite directions of each other. The set of transmission lines is configured to delay radio frequency (RF) signals from the beamforming IC to first and third antenna elements.

Abstract: The present disclosure relates to a method for installation of a phased array antenna receiving a signal, the method comprising: determining that a higher directivity of the phased array antenna is achievable; determining an orientation of the phased array antenna at which the higher directivity is achievable; and providing instructions for adjusting the orientation of the phased array antenna from an initial orientation to the determined orientation.

Abstract: The present disclosure relates to an antenna element arrangement configured for use with a plurality of phase shifters, the antenna element arrangement comprising: a first group of elements comprising a first plurality of elements aligned in a first direction, each element in the first plurality of elements arranged to accept, in a transmit mode, a first electrical signal from a first phase shifter or to supply, in a receive mode, a first electrical signal to the first phase shifter; and a second group of elements comprising a second plurality of elements aligned in a second direction, each element in the second plurality of elements arranged to accept, in the transmit mode, a second electrical signal from a second phase shifter or to supply, in the receive mode, a second electrical signal to the second phase shifter; wherein the first and second directions are nonparallel.

Abstract: A crystal driving circuit comprising a circuit input node and a circuit output node, a high power amplifier having a power consumption of more than 100 ?W, a low power amplifier comprising a power consumption less than 10 ?W, the circuit being arranged to selectively isolate the high power amplifier and associated load capacitance from the circuit input node and the circuit output node.

Abstract: A method of selecting an intermediate frequency, IF, for use with a low-IF receiver, the method comprising determining a first frequency as the central frequency of the system bandwidth of the communication scheme used by the low-IF receiver, determining a second frequency as the central frequency of the bandwidth of the wanted signal to be received, selecting the sign of the IF to be used based on the first and second frequencies.

Abstract: A method of transmitting a signal using carrier aggregation, the method comprising providing at least two component carriers, combining the at least two component carriers in the digital domain, converting the combined component carriers to the analog domain with a DAC, passing the combined component carriers through an up conversion mixer to convert each combined component carrier to within a predetermined bandwidth centred on a conversion intermediate frequency to provide a signal for transmission comprising the combined component carriers, transmitting the signal.

Abstract: A method of selecting an intermediate frequency, IF, for use with a low-IF receiver, the method comprising determining a first frequency as the central frequency of the system bandwidth of the communication scheme used by the low-IF receiver, determining a second frequency as the central frequency of the bandwidth of the wanted signal to be received, selecting the sign of the IF to be used based on the first and second frequencies.

Abstract: A computer implemented method of calibrating a device comprising the steps of: deriving an analytic expression for a variable to be optimized of the device in terms of at least one parameter of the device, transforming the analytic expression into polynomial form of the at least one parameter of the device, the polynomial form comprising N coefficients, capturing at least N samples of a value of the variable from the device under calibration, each sample being a result of a different independent pre-determined value of the at least one parameter, applying the captured variable values and the corresponding at least one parameter values to the polynomial form, obtaining optimal values of the at least one parameter from the applying step to calibrate the device.

Abstract: An envelope tracking amplifier for a transmitter has a voltage mapping linearly related to the square of the amplitude of the baseband signal.

Abstract: A method of providing a power supply of an amplifier of a wireless transmission system comprising, determining the power at an antenna when transmitting a signal to be transmitted by the amplifier, determining the modulation scheme for transmitting the signal, determining the frequency allocation of the signal to be transmitted, determining a transmit channel characteristic, and adjusting a parameter of the power supply of the amplifier based on the determining steps to maintain amplifier linearity.

Abstract: A computer implemented method of calibrating a device comprising the steps of: deriving an analytic expression for a variable to be optimised of the device in terms of at least one parameter of the device, transforming the analytic expression into polynomial form of the at least one parameter of the device, the polynomial form comprising N coefficients, capturing at least N samples of a value of the variable from the device under calibration, each sample being a result of a different independent pre-determined value of the at least one parameter, applying the captured variable values and the corresponding at least one parameter values to the polynomial form, obtaining optimal values of the at least one parameter from the applying step to calibrate the device.

Abstract: An apparatus and method for reducing unwanted spectral emissions of a complex signal to be transmitted comprising calculating the nth power of the complex signal to be transmitted, calculating the complex conjugate of the nth power of the complex signal to be transmitted, applying a scaling factor to the complex conjugate to form a scaled correction signal, and adding the scaled correction signal to the signal to be transmitted.

Abstract: A switching circuit is linearized by using a capacitor to apply a drive voltage to an FET, wherein the drive voltage is independent of the signal switched by the switching circuit.

Abstract: An apparatus and method for reducing unwanted spectral emissions of a complex signal to be transmitted comprising calculating the nth power of the complex signal to be transmitted, calculating the complex conjugate of the nth power of the complex signal to be transmitted, applying a scaling factor to the complex conjugate to form a scaled correction signal, and adding the scaled correction signal to the signal to be transmitted.

Abstract: A method of providing a power supply of an amplifier of a wireless transmission system comprising, determining the power at an antenna when transmitting a signal to be transmitted by the amplifier, determining the modulation scheme for transmitting the signal, determining the frequency allocation of the signal to be transmitted, determining a transmit channel characteristic, and adjusting a parameter of the power supply of the amplifier based on the determining steps to maintain amplifier linearity.

Abstract: An arrangement for a transmitter and/or receiver which is adapted to allow carrier aggregation in a wireless communication system, comprising a plurality of radio frequency (RF) blocks, each of which is inherently adapted to operate substantially across (in the region of) one of the particular groups of frequency ranges. The number of groups may be 5 or less.

Abstract: A switching circuit is linearized by using a capacitor to apply a drive voltage to an FET, wherein the drive voltage is independent of the signal switched by the switching circuit.