Abstract: The present disclosure discloses a local oscillator feedthrough signal correction apparatus, including a microprocessor control unit, a first digital-to-analog converter, a second digital-to-analog converter, a mixer, a local oscillator, a signal output line, a signal splitter, and a detector tube. The signal splitter is disposed in the signal output line, and the first digital-to-analog converter and the second digital-to-analog converter are configured to provide the mixer with quadrature direct current components VI and VQ used for local oscillator feedthrough signal correction. The mixer outputs a local oscillator feedthrough signal to the signal output line. The signal splitter obtains the local oscillator feedthrough signal by means of splitting, and the detector tube detects the local oscillator feedthrough signal.

Abstract: Devices, systems, and methods for coupling with an implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body are disclosed herein. A device, such as a charger, can include: a power source for storing electrical energy; a resonant circuit that can have a plurality of selectable natural frequencies; a driver coupled to the power source and the resonant circuit; and a processor coupled to the resonant circuit to control the natural frequency of the resonant circuit. The processor can control the natural frequency of the resonant circuit according to stored data associated with the implantable neurostimulator.

Abstract: A method includes providing a radio frequency front end (RFFE) switch including a single pole input terminal and a number (N) of output terminals. Each of the N output terminals is a component of a respective one of N throws of the RFFE switch, with N being greater than one. The N output terminals include a first output terminal corresponding to a first throw of the N throws and at least one additional output terminal not connected to any radio frequency (RF) band path. The at least one additional output terminal includes a second output terminal corresponding to a second throw of the N throws. The method includes connecting the first output terminal to a single RF band path. The method includes forming a parallel connection between the single pole input terminal and the single RF band path. The parallel connection provides at least two parallel branches for routing RF signals being transceived between the single pole input terminal and the single RF band path.

Abstract: This disclosure relates to energy budgeted cellular service recovery techniques. A wireless device may determine one or more energy budgets for service recovery. It may be determined that cellular service loss is currently occurring. Cellular service recovery may be attempted, where service recovery scan timing for the attempt to recover cellular service is determined based at least in part on the one or more energy budgets for service recovery.

Abstract: Systems, devices, and methods associated with interference aware sounding reference signals are provided. A method for wireless communication includes receiving, at a wireless communication device in communication with a first base station, an interfering signal from a second base station (or other base stations); determining, at the wireless communication device, a spatial direction of the interfering signal; and transmitting, with the wireless communication device, a signal to the first base station based on the spatial direction of the interfering signal.

Abstract: A method and a system of setting up a reference signal in a radio communication system are disclosed. The radio communication system includes a serving cell and a neighboring cell, and a mobile terminal of the serving cell uses the same temporal frequency resource to receive a serving resource block from the serving cell and an interference resource block from the neighboring cell. The method includes setting up a user-specific reference signal in the interference resource block and puncturing at the same temporal frequency position as the temporal frequency position at which the user-specific reference signal is set up on the interference resource block of the serving resource block to prevent any signal from being transmitted at the punctured temporal frequency position. When the method and the system are used and the interference power between cells is measured, it is possible to effectively reduce feedback overhead in a coordinated beamforming.

Abstract: Methods, tests systems and computers for controlling power delivered to a test volume are provided. According to one aspect, an electromagnetic test system has at least one operational path having a channel emulator output, an amplifier, an attenuator and an antenna. A method includes, for a given desired output power level, C, setting a channel emulator output power to a power level B, and setting the attenuator to a setting A, such that C is a function of B and A. In such embodiments, the attenuation A is calculated based on an upper limit output power of the channel emulator and the desired output power C.

Abstract: A portable device includes one or more memories and travel mode control circuitry coupled to the one or more memories. The travel mode control circuitry, in operation, monitors motion data and temperature data to detect a first travel state of the device. When the first travel state of the device is detected, motion data and pressure data are monitored to detect a transition from the first travel state to a second travel state of the device. When the transition to the second travel state of the device is detected, one or more control signals are generated to cause the device to enter a first travel mode of operation.

Abstract: A transmitter for providing channel equalization that includes a first driver and second driver having a high pass filter. The first driver generates a first output signal representing a digital input signal. The second driver generates a second output signal representing a high pass filtered version of the digital input signal. The first and second output signals are summed to provide a third output signal that is channel equalized for transmission over a channel.

Abstract: A wireless communication apparatus includes an oscillator circuit configured to generate an oscillation signal corresponding to an oscillation frequency determined by an antenna, and a bias generator circuit configured to reconfigure an operation region mode of a transistor included in the oscillator circuit by adjusting a bias signal in response to an enable signal.

Abstract: A circuit module includes a power amplifier, a switch, and a bypass capacitor. The power amplifier has a signal input node coupled to an input signal, a signal output node to generate an output signal, and a power input node coupled to a supply output signal of a supply modulator. The switch is coupled between the power input node of the power amplifier and the bypass capacitor. The bypass capacitor is an equivalently removable bypass capacitor coupled between the switch and a ground level.

Abstract: Power amplifier module with power supply control. A power amplification control system can include an interface configured to receive a transceiver control signal from a transceiver. The power amplification control system can include a power amplifier control component configured to generate a power amplifier control signal based on the transceiver control signal from the transceiver and a power supply control component configured to generate a power supply control signal based on the transceiver control signal from the transceiver and to generate the power supply control signal based on a local control signal from the power amplifier control component.

Abstract: The present disclosure provides a network interface device, including an active downstream radio-frequency (RF) signal path connecting an entry port and an active port. The network interface device also includes a passive downstream RF signal path connecting the entry port and a passive port. The network interface device further includes an active upstream RF signal path connecting the entry port and the active port. Additionally, network interface device includes a passive upstream RF signal path connecting the entry port and the passive port. Moreover, the network interface device includes a downstream directional coupler having an input port, a through port, and a coupled port. The passive downstream RF signal path comprises the input port of the downstream directional coupler and the coupled port of the downstream directional coupler.

Abstract: A method for reducing the peak factor of a signal transmitted in a frequency band comprising several channels, the signal using a plurality of channels in the band comprises: a step of clipping the signal, a step of subtracting the clipped signal from the signal, so as to obtain a peak signal, a step of filtering the peak signal with the aid of a multichannel filter configured to comply with a predetermined spectral mask for each of the channels used by the signal, and a step of subtracting the filtered peak signal from the signal. A device for emitting a multichannel signal implementing the method for reducing the peak factor is also provided.

Abstract: A current mirror circuit connectible to an amplifier circuit to set a bias point thereof includes a current mirror circuit, and a bias resistor connected thereto. The bias resistor is connectible to the amplifier circuit. A first helper circuit is connected in parallel with the bias resistor, and is selectively activated for a first predetermined duration by a first control signal. The activated first helper circuit defines a lower resistance path relative to the bias resistor to shorten a rising transient response of the amplifier circuit as the current mirror circuit is activated.

Abstract: Aspects of this disclosure relate to compensating for dynamic error vector magnitude. A compensation circuit can generate a compensation signal based at least partly on an amount of time that an amplifier, such as a power amplifier, is turned off between successive transmission bursts of the amplifier. For example, the compensation circuit can charge a capacitor based at least partly on an amount of time that the amplifier is turned off between successive transmission bursts and generate the compensation signal based at least partly on an amount of charge stored on the capacitor. A bias circuit can receive the compensation signal, generate a bias signal based at least partly on the compensation signal, and provide the bias signal to the amplifier to bias the amplifier.

Abstract: A system for a controller area network (CAN) transceiver of a motor vehicle including a main power supply, the main power supply being unregulated, a secondary power supply set above a minimum operating voltage of the CAN transceiver, the secondary power supply being regulated, a first diode, the first diode allowing the main power supply to power the CAN transceiver, a second diode, the second diode allowing the secondary power supply to power the CAN transceiver, wherein when the main power supply has a low cranking voltage below a normal operating voltage range, the first diode is reverse bias and the second diode is forward bias at the low cranking voltage, the secondary power supply powers the CAN transceivers at the low cranking voltage, thereby allowing the CAN transceiver to remain ON at the low cranking voltage.

Abstract: A power amplifier includes a distributor distributing an input first signal to a second signal and a third signal delayed by about 2? degrees (45<?<90) from the second signal, a first amplifier amplifying the second signal and outputting a fourth signal when a first-signal power level is not lower than a first level, a second amplifier amplifying the third signal and outputting a fifth signal when the first-signal power level is not lower than a second level that is greater than the first level, a first phase shifter receiving the fourth signal and outputting a sixth signal delayed by about ? degrees from the fourth signal, a second phase shifter receiving the fifth signal and outputting a seventh signal advanced by about ? degrees from the fifth signal, and a combiner combining the sixth and seventh signals and outputting an amplified signal of the first signal.

Abstract: A base station signal matching device configured to receive a base station signal from a base transceiver station (BTS), the base station signal matching device is embedded in a relay device, and the base station signal matching device includes a signal attenuation unit configured to receive the base station signal and attenuate the input power level of the base station signal; and a signal matching unit configured to receive the base station signal passing through the signal attenuation unit to match the base station signal suitable for signal processing of the relay device.

Abstract: An integrated circuit comprising a transceiver including a transformer. The transformer includes an input coupled to one or more primary windings. The transformer also includes a first differential output coupled to a first set of one or more secondary windings. The transformer further includes a second differential output coupled to a second, different set of one or more secondary windings. A method of making an integrated circuit comprising a transceiver. The method includes forming a plurality of components on and/or in a semiconductor substrate. At least one of the components comprises a transformer. The method includes forming the transformer by forming one or more primary windings coupled to an input, forming a first set of one or more secondary windings coupled to a first differential output, and forming a second, different set of one or more secondary windings coupled to a second differential output.

Abstract: An excessive voltage rise of load voltage, caused by an impedance mismatching on a transmission path, is prevented, and high-frequency power is regenerated. A parallel impedance is connected to the transmission path during the voltage rise, thereby regenerating voltage caused by a standing wave and preventing excessive load voltage, together with enhancing energy usage efficiency. Establishing the parallel impedance for the load impedance, on the transmission path between the high-frequency amplifier circuit of the high-frequency power supply device and the high-frequency load, reduces impedance at the connecting position to prevent generation of excessive voltage on the transmission path, and high-frequency power is regenerated from the transmission path by the parallel impedance.

Abstract: Novel tools and techniques are provided for implementing wireless radio functionality in a home or building. In some embodiments, a device may comprise a light socket attachment configured to be inserted into a corresponding light socket, a communications system comprising a non-wired communications device (e.g., a wireless radio, a LiFi device, etc.), a light bulb receptacle configured to receive a light bulb, and/or circuitry configured to receive electric power through the light socket attachment, to direct a specified current to the communications system, and to direct remaining current to the light bulb receptacle. In an additional aspect, the device might be configured to implement a two-terminal or a three-terminal power connection light socket to power the communications system. In some cases, Power-Line Communications (“PLC”) may be used to transmit data over the three-terminal power connection to and from the communications system.

Abstract: An inductive power supply system includes a non-contact power supply for energizing a device. The inductive power supply system includes a communication system for enabling communication between a device and the system. The device transmits an identifier to the system. If the device does not have a transmitter, the system attempts to determine the type of device from a characterization of the power consumption by the device. If the device cannot be characterized, the inductive power supply system can be operated manually.

Abstract: During the contactless transfer of the data from PICC (1) to PCD (4) with the load modulation within PICC (1) the analog signal between the transmitting antenna (3) and the output of the driver (2) is demodulated. From the demodulated output the digital data are generated for the direction of the subsequent modification of the signal led to the PICC (1) antenna set. The digital data gather from the demodulated signal are used for the amplification and/or attenuation of the signal received on the side of the PCD (4) and/or for synchronization or other modification of the signal on the side of the PICC (1), whereby no further modification of the driver (2) is needed. The connection on the LA, LB outputs appears to the driver (2) by its characteristics, mainly by its impedance, in the same way as the connected antenna (3) of the original connection according to the prior state of the art.

Abstract: Described herein is a smart battery unit capable of assessing its suitability to support a particular load. In some embodiments, the battery unit may receive an indication of power requirements for the particular load with respect to a period of time and may evaluate a total electrical capacity that would be required to support such a load based on those power requirements. The battery backup unit may monitor and dynamically update a full-charge capacity value related to its battery cells as well as the capacity requirement related to the load. The two values may then be compared to determine whether the battery backup unit is capable of supporting the load. If the full-charge capacity value is less than the capacity requirement for the load, then the battery unit may determine that it is not suitable for that load.

Abstract: First and second higher layer parameters for uplink power control adjustment associated with a respective first transmit time interval duration and second transmit time interval duration can be received. A first and second transmit power control commands for power control adjustment can be received.

Abstract: Methods and apparatus relating to Based Priority Application Event Control (PAEC) to reduce application events are described. In one embodiment, PAEC may determine which applications (and their corresponding sub-system(s)) may cause a processor or platform to exit a low power consumption state. In an embodiment, PAEC may determine which applications (and their corresponding sub-system(s)) may resume operations after a processor or platform exit a low power consumption state. Other embodiments are also claimed and disclosed.

Abstract: Apparatus and methods for providing variable regulated voltages are disclosed. Variable voltage control elements can adjust a regulated voltage provided by a single voltage regulator, thereby providing a variable regulated voltage. The regulated voltage can be used in a variety of applications, for example, as a bias voltage for a power amplifier.

Abstract: This disclosure relates to energy budgeted cellular service recovery techniques. A wireless device may determine one or more energy budgets for service recovery. It may be determined that cellular service loss is currently occurring. Cellular service recovery may be attempted, where service recovery scan timing for the attempt to recover cellular service is determined based at least in part on the one or more energy budgets for service recovery.

Abstract: A base station is provided for receiving an acknowledgement or negative acknowledgement (ACK/NACK) signal, including a transmitting unit configured to transmit a control signal using one or a plurality of CCE(s). The base station also includes a receiving unit configured to receive an ACK/NACK signal, the ACK/NACK signal being multiplied by an orthogonal sequence, by a sequence defined by a cyclic shift, and by either a first value or a second value, wherein the first value rotates a constellation of the ACK/NACK signal by 0 degrees and the second value rotates the constellation of the ACK/NACK signal by N degrees, which is different from 0 degrees.

Abstract: An apparatus operable to provide a communication link between a passive entry and passive (PEPS) start system of a target vehicle and a user device operable to control the PEPS system, the apparatus comprising: i) a first wireless transceiver adapted to be installed in a first vehicle and configured to communicate with the user device and with a second wireless transceiver associated with a second vehicle; and ii) a master controller module configured in a blind rebroadcast mode: a) to receive via the first wireless transceiver a control message sent from a transmitting source and to transmit the control message via the first wireless transceiver to the second wireless transceiver associated with the second vehicle; and b) to receive via the first wireless transceiver a response message originated by the PEPS system of the target vehicle and to transmit the response message via the first wireless transceiver to the transmitting source.

Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.

Abstract: A communication module includes a power amplifier that amplifies a transmission signal having a first communication system or a second communication system and outputs an amplified signal to a signal path, a switch circuit that switches between a signal path for the first communication system and a signal path for the second communication system and outputs the amplified signal to one of the signal paths for the first communication system and the second communication system in accordance with a control signal supplied in accordance with the communication system of the transmission signal, and an impedance-matching network disposed between the power amplifier and the switch circuit, the impedance-matching network including a first variable capacitance element. The first variable capacitance element has a capacitance value that is controlled in accordance with the communication system of the transmission signal.

Abstract: The present application relates to a baseband communications transceiver and a method of operating the baseband communications transceiver. The transceiver comprises an analog front end transmitter section, AFE TX, with a digital to analog converter, DAC, and a transmission, TX, driver; an analog front end receiver section, AFE RX, with an analog-to-digital converter, ADC; at least one equalizer arranged downstream of the AFE RX and implemented on the basis of an adaptive filter; at least one loss encode and a channel monitoring block. The at least one loss encode is configured to determine loss value data indicative of a signal loss on the communication channel based on filter coefficients of the adaptive filter. The channel monitoring block is configured to determine an amplitude control signal, which is provided to control the amplitude of analog signals generated by the TX driver of the AFE TX.

Abstract: An incoming call indicator for a telephone is structured to detect light emitted from a light source that is already present on the telephone, and that is illuminated in response to an incoming telephone call and/or waiting message. If the telephone utilizes different on/off cadences for the light to indicate external calls, internal calls, and/or waiting messages, then the cadence is detected, and an audio or visual output device is used to emit a signal corresponding to the specific detected event.

Abstract: A multi-mode power management circuit is provided. The multi-mode power management circuit includes a second generation (2G) amplifier circuit(s) configured to amplify a 2G radio frequency (RF) signal for transmission in a 2G RF band(s). The multi-mode power management circuit includes a pair of tracker circuitries coupled to the 2G amplifier circuit. Each tracker circuitry includes a charge pump circuitry configured to generate a voltage and a current. When the 2G amplifier circuit amplifies the 2G RF signal for transmission in the 2G RF band(s), both charge pump circuitries are controlled to provide two currents to the 2G amplifier circuit. As a result, the 2G amplifier circuit is able to amplify the 2G RF signal to a higher power corresponding to a sum of the two currents for transmission in the 2G RF band(s).

Abstract: Determining whether to operate in a single radio access technology (RAT) mode or a dual RAT mode for a user equipment (UE) having a radio capable of communicating using at least a first RAT and a second RAT. The UE may determine whether current path loss for the first RAT exceeds a maximum path loss. Based on the results of determining whether the current path loss for the first RAT exceeds the maximum path loss, the UE may determine whether to operate in the single RAT mode or the dual RAT mode. Accordingly, based on this determination, the UE may operate in the single RAT mode or the dual RAT mode based on the determination.

Abstract: An unlicensed carrier power control method is provided. Multiple transmitted power constraint parameters are acquired, and a minimum value in the multiple transmitted power constraint parameters is determined. Power control is performed according to the minimum value in the multiple transmitted power constraint parameters. An unlicensed carrier power control device and a storage medium are also provided.

Abstract: Mobile phones, phone systems, and emergency location systems are described with features that assist rescue teams in locating survivors in a disaster situation where a phone user and their mobile phone are buried under rubble. To enable the phone's battery charge to last longer, an emergency power conservation mode (E-mode) is activated by either receiving a command from an external source via RF transmission, or by noticing a rapid reduction in signal strength from a tower without changing the phone's physical location. Transmissions are also made by the phone from time to time indicating the user's health condition including providing an indication of life. Portable RF devices may be deployed at grid positions to locate mobile phones by triangulation based on signals received from mobile phones while battery charge still exists for the mobile phones immediately following the disaster.

Abstract: An audio signal amplification device includes: a clock generation circuit that generates a clock for use in amplifying an audio signal; and a power supply circuit that generates direct current power, which is supplied to the clock generation circuit, from input power. The power supply circuit includes: a constant voltage generation circuit that generates direct current power of a constant voltage from the input power; a first capacitor; a first charging circuit that charges the first capacitor by using the input power; and a selection circuit. The selection circuit selects one direct current power of the direct current power generated in the constant voltage generation circuit and of direct current power charged to the first capacitor, and supplies the selected direct current power to the clock generation circuit.

Abstract: A method for monitoring power delivered to a powered device over communication cabling, the method comprising: enabling a first supply power; enabling a second supply power; for the enabled first supply power, providing a first maintain power signature (MPS) functionality arranged to disable the enabled first supply power in the event that the current drawn from the enabled first supply power is less than the first undercurrent threshold; for the enabled second supply power, providing a second maintain power signature (MPS) functionality arranged to disable the enabled second supply power in the event that the current drawn from the enabled second supply power is less than the second undercurrent threshold; receiving an indication that the powered device presents a single powered device interface to both the first and the second PSE; and controlling one of the provided first and second MPS functionality responsive to the received indication.

Abstract: A system and method for decoding an intended transmission includes a user device that receives a downlink transmission containing a user signal intended for the user device and one or more interfering user signals directed to one or more other user devices. The user device obtains power stacking information that includes a power level for each of the user signals contained in the received downlink transmission. A channel is estimated using pilot signals in the downlink transmission. Each interfering user signal contained in the downlink transmission is demodulated and decoded using the power stacking information. The user device removes all interfering user signals from the received downlink transmission to obtain the user signal intended for the user device.

Abstract: There is disclosed a method of predicting an ambient temperature around a mobile device, wherein: a primary temperature sensor comprised in said mobile device measures a first temperature value; at least one secondary temperature sensor comprised in said mobile device measures a second temperature value; a processing unit comprised in said mobile device calculates a first prediction of an ambient temperature around the mobile device in dependence on the first temperature value and at least one parameter which is indicative of a thermal influence of one or more mobile device components on the measurements; the processing unit calculates a second prediction of said ambient temperature in dependence on the second temperature value and said parameter; the processing unit compares the first prediction with the second prediction and adjusts said parameter if the difference between the first prediction and the second prediction exceeds a predefined maximum.

Abstract: The invention relates to a method for sending messages in an energy self-sufficient radio system, wherein an electric power for the radio system is provided by an energy converter that converts nonelectrical primary energy from the environment into electric power. The method comprises the steps of storage of at least two transmission channels in the radio system, presetting of a transmission unit of the radio system to a preferred stored transmission channel, checking of a use of the preferred transmission channel by other radio systems and if necessary changing from the preferred transmission channel to another stored transmission channel if the preferred transmission channel is in use, and sending of a predetermined radio message by the transmission unit on the preferred or the other transmission channel.

Abstract: Systems, methods, and computer program products to perform an operation comprising establishing a telephone call between a local mobile telephone and a remote telephone via an audio system in a vehicle, wherein the telephone call is audible through a set of speakers connected to the audio system in the vehicle, and responsive to the telephone call, determining that more than one person is present in the vehicle, and sending, to the remote telephone, an indication that more than one person is present in the vehicle.

Abstract: The invention relates to an apparatus (1) for powering an electrical consumer (3, 4, 5) via a data connection (6, 7, 8). The apparatus comprises a power supply (2) for supplying power to the electrical consumer via the data connection, a data receiving unit (9) for receiving data to be sent to the electrical consumer, and a controller (10) for activating the supply of power to the electrical consumer via the data connection, if data to be sent to the electrical consumer have been received and the supply of power to the electrical consumer is deactivated. The electrical consumer itself does therefore not need to receive power from the apparatus, in order to stay alert to be able to react on data connection activity, thereby reducing the power consumption.

Abstract: A network of nodes includes data nodes and at least one sink node to exchange packets between the sink node and the data nodes in a multi-hop manner. The data nodes include a battery powered node (BPN) having a transceiver, a memory, and a battery to provide energy to components of the BPN. The BPN includes a processor to determine a sleep schedule of the BPN independently from the sleep schedules of other data nodes and independently from commands transmitted by the sink node. The processor of the BPN switches the transceiver ON and OFF according to the sleep schedule to form an active period and a sleep period of the BPN. Also, the processor partitions at least part of the active period into a receiving (RX) period and a transmission (TX) period and causes the transceiver to transmit the data packets only during the TX period.

Abstract: Systems, devices, and methods associated with interference aware sounding reference signals are provided. A method for wireless communication includes receiving, at a wireless communication device in communication with a first base station, an interfering signal from a second base station (or other base stations); determining, at the wireless communication device, a spatial direction of the interfering signal; and transmitting, with the wireless communication device, a signal to the first base station based on the spatial direction of the interfering signal.

Abstract: Circuits and operating methods thereof for correcting phase errors introduced by amplifiers employing gallium nitride (GaN) transistors are described. The phase errors are caused by trapping effects exhibited by the GaN transistors. The circuits described herein pre-distort the phase of the input signal to compensate for the phase error introduced by the amplifier. Thereby, the phase of the output signal of the amplifier has a reduced phase error. For example, the output signal may have a near zero (or zero) phase error.

Abstract: A secure remote actuation system may comprise a remote input receptor and a central signal switch. The remote input receptor may comprise a user interface for receiving user inputs from a user. The central signal switch may comprise acceptable inputs. The central signal switch may further comprise a microcontroller for obtaining and comparing the user inputs to the acceptable inputs. In the present invention, the microcontroller obtains the user inputs from the remote input receptor while the user is using the user interface.