Abstract: The present application discusses, among other things, apparatus and methods for detecting and using a excess capacity on a wireless network medium. A method embodiment includes calculating a differential metric based on a first metric and a second metric for a primary network. The primary network can have a medium shared with a secondary network. The first metric can be based on a first distribution of traffic on the primary network and can correspond to absence of a perturbation of the medium. The second metric can be based on a second distribution of traffic on the primary network and can correspond to a perturbation of the medium from a node of the secondary network. The method can include selecting a transmission power for the node based on the differential metric.

Abstract: In one implementation, a power amplifier may include a gain device to receive an input signal and to output an amplified signal, and a compensation device coupled to the gain device to compensate for a change in a capacitance of the gain device occurring due to a change in the input signal. The power amplifier may be formed using a complementary metal oxide semiconductor (CMOS) process.

Abstract: A near-field communication (NFC) system may include a plurality of NFC devices each including a housing, a power source carried by the housing, at least one input device carried by the housing and assigned to a designated device function, an NFC circuit configured to wirelessly communicate using an NFC communications protocol, and a processor. The processor may be configured to initiate the designated device function based upon a first input pattern of the at least one input device, switch the NFC circuit between a higher power state and a lower power state at a first frequency, the NFC circuit in the higher power state being configured to generate an RF field to initiate NFC communications, and switch the NFC circuit between the higher and lower power states at a second frequency based upon a second input pattern of the input device(s) different from the first input pattern.

Abstract: A technique for a reconditioning equalizer filter for non-constant envelope signals is described. The input to a transmitter chain is modified by a reconditioning equalizer filter, prior to being applied to the transmitter. The reconditioning equalizer filter modifies and smoothens the amplitude of the signal. The modified and smoothened signal has its peaks reduced which results in lower Crest Factor. The input to the reconditioning equalizer filter could be a baseband, intermediate frequency (IF) or radio frequency (RF) signal. When the signal is an IF or RF signal, it needs to be down-converted to baseband before being applied to the reconditioning equalizer filter. The reconditioning equalizer filter could be performed in a digital or analog domain.

Abstract: An adapter for coupling to a process control transmitter of the type used to monitor a process variable in an industrial process includes a first connection configured to couple to a first side of a two wire process control loop, a second connection configured to couple to a second side of the two wire process control loop and in series with a first connection to a process control transmitter, and a third connection configured to couple to a second connection of the process control transmitter. Wireless communication circuitry is coupled to at least the third connection and is configured to provide wireless communication for the process control transmitter. Intrinsic safety circuitry coupled to at least one of the first, second and third connections is configured to limit transfer of electrical energy to a value which is less than an intrinsic safety value.

Abstract: An apparatus is provided that comprises a test circuit; a first receiver unit arranged to receive test commands and to provide the test commands to the test circuit; a power supply unit arranged to supply power to the test circuit and to the first receiver unit; a second receiver unit arranged to receive power commands. The second receiver is arranged to control the operation of the power supply unit in response to the power commands received by the second receiver unit.

Abstract: Methods and systems for receiving signals via a multi-port distributed antenna are disclosed and may include selectively enabling one or more low noise amplifiers (LNAs) coupled to the antenna. The selective enabling may be based on a desired gain level applied to a signal received from the antenna. The LNAs may be coupled to ports on the antenna based on an input impedance of the LNAs and an impedance of the ports. Each of the LNAs may be configured for optimum linearity in different gain ranges, which may be proportional to the input impedance of the LNAs. The antenna may be integrated on a chip with the LNAs, or may be located external to the chip. The antenna may include a microstrip antenna. The LNAs may include variable gain and may be enabled utilizing a processor. Linearity on demand may be enabled via the selective enabling of the LNAs.

Abstract: Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

Abstract: A method for controlling output signal power in a communication terminal includes accepting, from first and second measurement points along a transmission chain in a transmitter of the terminal, respective first and second signal representations of a communication signal to be transmitted by the communication terminal. A cross-correlation is computed between the first and second signal representations accepted from the first and second measurement points. An actual gain between the first and second measurement points is computed using the cross-correlation. An output power of the communication signal is adjusted by setting a gain of the transmitter responsively to the actual gain.

Abstract: According to various embodiments, a radio device may be provided. The radio device may include a configurable component, a configuration information transmitter configured to transmit information identifying the radio device and an identifier of a configuration of the configurable component to a regulation server; and a permission information receiver configured to receive from the regulation server information indicating as to whether the radio device is permitted to use the configuration of the configurable component or as to whether a pre-determined configuration of the configurable component is to be used by the radio device.

Abstract: The present invention relates to a method for reducing power consumption when performing the cooperative transmission in a cooperative transmission system, the method comprising: defining a cooperative transmission participation rate or a cooperative transmission non-participation rate to adjust the participation rate of at least one terminal capable of cooperative transmission within at least one cooperative cluster, the participation rate adjustment being carried out in the at least one terminal capable of cooperative transmission by generating a random value having a preset range; comparing the generated random value with a threshold as a reference indicating whether a corresponding terminal is participating in cooperative transmission; and determining whether the corresponding terminal has participated in cooperative transmission, on the basis of the comparison result.

Abstract: Aspects of a system for improving efficiency over power control for linear and class AB power amplifiers may include a current source circuit that enables determination of a bias current level for a PA circuit within an IC die based on an amplitude of an input modulation signal. The PA circuit may enable generation of an output signal based on a differential input signal and the input modulation signal to the current source circuit. A generated bias voltage may be applied to a transformer external to the IC die, but internal to an IC package containing the IC die and/or a circuit board containing the IC package. One or more amplifier bias voltage levels may be applied to the PA circuit wherein the amplifier bias voltage levels may be derived from the generated bias voltage level and/or the determined bias current level.

Abstract: A transmission module including a power supply voltage control unit that sets a power supply voltage to the high frequency amplifier in a variable manner, and a control circuit that controls an amplitude control unit, a phase control unit and the power supply voltage control unit. The control circuit and the power supply voltage control unit control the power supply voltage in accordance with an output power of the high frequency amplifier. The transmission module can carry out not only phase control but also amplitude control in a continuous manner, while suppressing amplitude and phase variation, and a high frequency amplifier in the transmission module is made highly efficient. In addition, a large directional gain, a low side lobe level and a low power consumption are achieved, as a phased array antenna apparatus using a transmission module.

Abstract: A radio frequency (RF) power amplification system in which a combination of a linear voltage regulator having a PFET pass device and a DC-DC converter having an NFET pass device is used to supply power to an RF power amplifier. The RF power amplifier receives power from either the linear voltage regular and its associated PFET pass device or the DC-DC converter and its NFET pass device, depending upon the condition of a mode signal.

Abstract: A transmission signal power control device includes: at least one low-power attenuator configured to attenuate amplitude of a transmission signal when an absolute value of the amplitude of the transmission signal is smaller than or equal to a clipping threshold; a power amplifier configured to amplify the transmission signal output from the at least one low-power attenuator; and a control unit configured to stop operation of the power amplifier when the absolute value of the amplitude of the transmission signal is smaller than or equal to a value and operate the power amplifier when the absolute value of the amplitude of the transmission signal is larger than the value.

Abstract: A method and arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which substantially comprises one receive signal branch and one transmit signal branch. Mixing frequencies of the different systems are generated by a single common by use of an output frequency divider in combination with the synthesizer, and by use of filtering corresponding to a system channel bandwidth by means of a controllable low-pass filter operating at baseband frequency.

Abstract: Disclosed is a weight factor matrix determining method for beamforming in a base station in order for inter-cell interference to be removed. The weight factor matrix determining method for beamforming which includes: determining a first transmission power for a first terminal being a target terminal and a second transmission power for a plurality of second terminals other than the target terminal; calculating an Eigen vector with an Eigen value for a ratio of the first and second transmission powers; and determining a weight factor matrix in a serving base station, with the calculated Eigen vector.

Abstract: A wireless communication device is configured for performing uplink transmission power control. The wireless communication device includes a processor and instructions stored in memory. The wireless communication device performs uplink transmission power control for multiple regulated frequency bands or component carriers. The wireless communication device determines a total transmission power for at least one component carrier and allocates transmission power to at least one antenna.

Abstract: A method for power control includes: if a downlink serving Access Point (AP) of a User Equipment (UE) is different from an uplink serving AP of the UE, sending, by a base station, downlink signaling to the UE so that the UE adjusts uplink transmitting power according to the downlink signaling. In addition, the present invention discloses an apparatus and a network device for power control.

Abstract: Systems and methods are provided for detecting forward power sent to an antenna and reflected power reflected back from the antenna. Embodiments of the present invention provide systems and methods for measuring forward and reflected power and controlling the amount of power supplied to the antenna responsive to these measurements. Embodiments of the present invention enable the power sent to the antenna to be dynamically altered when antenna impendence changes (e.g., when the antenna gets too close to another object).

Abstract: A monolithic integrated circuit (IC), and method of manufacturing same, that includes all RF front end or transceiver elements for a portable communication device, including a power amplifier (PA), a matching, coupling and filtering network, and an antenna switch to couple the conditioned PA signal to an antenna. An output signal sensor senses at least a voltage amplitude of the signal switched by the antenna switch, and signals a PA control circuit to limit PA output power in response to excessive values of sensed output. Stacks of multiple FETs in series to operate as a switching device may be used for implementation of the RF front end, and the method and apparatus of such stacks are claimed as subcombinations. An iClass PA architecture is described that dissipatively terminates unwanted harmonics of the PA output signal.

Abstract: A transmit circuit includes a power amplifier configured to amplify an RF input signal to obtain an RF output signal, and an antenna tuner configured to transform an antenna impedance to an impedance at an input of the antenna tuner, wherein the input of the antenna tuner is coupled to an output of the power amplifier. The transmit circuit further includes a bias controller configured to control a bias of the power amplifier, wherein the bias controller is configured to provide a bias control signal to adjust the bias of the power amplifier based on a determination of a measure of a load impedance provided to the power amplifier by the antenna tuner.

Abstract: Devices, methods, and systems are provided that allow for acquiring and/or communicating data associated with a location. Embodiments of the present invention allow a mobile communication device to detect a sensor associated with a particular location, and information about that location is provided to the mobile communication device. Other embodiments allow data to be detected and processed in order to characterize a location and objects contained therein.

Abstract: Some embodiments of the present disclosure relate to transmission techniques that result in power savings relative to previous solutions. These techniques often transmit a signal-of-interest by using two paths, namely, a transmission path (which includes a power amplifier) and a control path. The signal-of-interest is evaluated in “fast-track” fashion on the control path, such that the control path can “tune” a DC supply signal provided to the power amplifier. Thus, when a delayed version of the signal-of-interest is provided over the transmission path to the power amplifier, the DC supply signal provided to the power amplifier helps ensure that the power amplifier has “just enough” DC supply to ensure reliable operation without dissipating excess power. In this way, the techniques disclosed herein help to reduce power consumption in transmitters, thereby potentially helping to extend battery life and reduce undesired heating for users.

Abstract: Exemplary embodiments are directed to a transmitter with a power amplifier and a switched output matching circuit implementing a plurality of output paths for a plurality of operating modes is described. The power amplifier receives an input RF signal and provides an amplified RF signal. An output matching network performs impedance transformation from low impedance at the power amplifier output to higher impedance at the matching network output. The plurality of output paths are coupled to the output matching network. Each output path provides a different target output impedance for the power amplifier and routes the amplified RF signal from the power amplifier to an antenna when that output path is selected. Each output path may include a matching network coupled in series with a switch. The matching network provides the target output impedance for the power amplifier when the output path is selected. The switch couples or decouples the output path to/from the power amplifier.

Abstract: A power amplification device is disclosed that includes a power amplification circuit operable to amplify a radio frequency (RF) signal in accordance with an amplification gain, and a voltage regulation circuit operable to generate a regulated voltage. A regulated voltage level of the regulated voltage sets the amplification gain. To help prevent the voltage regulation circuit from saturating, the voltage regulation circuit is configured to reduce a voltage adjustment gain when the regulated voltage level reaches a threshold voltage level. In one embodiment, the threshold voltage level is set to be higher when a band-select signal indicates that the RF signal is being transmitted within a first frequency band, and is set to be lower when the band-select signal indicates that the RF signal is being transmitted within a second frequency band. The spectral performance of the power amplification device thus improves with regard to the second frequency band.

Abstract: A beam power source transmits a signal indicating power availability, receives a request for power in response, and beams power in response to the request.

Abstract: An analog radio frequency input and an analog feedback from an output of a radio frequency amplifier are digitized and down-converted. Pre-distortion coefficients are calculated based on the down-converted input and down-converted feedback and the down-converted input is filtered using the pre-distortion coefficients. The filter output is then up-converted to a carrier frequency and converted to analog to be provided to the radio frequency amplifier.

Abstract: A configurable transceiver may include a configurable receiver, a configurable transmitter, and a digital signal processor (DSP). One or more components of the configurable receiver and/or the configurable transmitter may be a block that includes an array of components, such as an array of amplifiers, an array of filters, etc. The DSP may determine a configuration of the configurable receiver that satisfies a bit error rate threshold and minimizes power consumption. The DSP may configure the blocks of the configurable receiver in accordance with the determined configuration of the configurable receiver. The DSP may receive an indication of a modulation scheme being used for transmitted data and may determine a configuration of the configurable transmitter for the modulation scheme that satisfies an error vector magnitude threshold and minimizes power consumption. The DSP may configure the blocks of the configurable transmitter in accordance with the determined configuration of the configurable transmitter.

Abstract: Methods and apparatus for active and passive dynamic electromagnetic radiation emission control in wireless devices by limiting transmit power in individual devices is disclosed. In various embodiments, electromagnetic radiation emissions from wireless devices are dynamically controlled using variable transmit power limits acquired through the use of RF ID/NFC tags that indicate transmit power limits, where such power limiting tags are embedded in clothing, furniture, etc., communication of transmit power limits over Bluetooth or other short range technologies, location-based transmit power limits, user input transmit power limits. Controlling the transmit power of mobiles as well as femtocells/access points for the purpose of minimizing SAR using variable transmit power limits is detailed.

Abstract: A fast tracking power supply device, a fast tracking power supply control method, and communication equipment are provided. The fast tracking power supply device includes: a basic voltage output unit, configured to output a basic voltage; a basic current unit, configured to output a basic current; a linear amplifier, configured to output a compensation current and a compensation voltage, the linear amplifier is connected in parallel with the basic current output unit, and then is connected in series with the basic voltage output unit. The device can output signal with high efficiency and bandwidth.

Abstract: A system, such as a transceiver, for controlling an adjustable power level includes first and second power detectors, a network of attenuators, a compensator, a comparator, and a controller. The first power detector measures the power of a signal. The network of attenuators receives the signal and generates an attenuated signal. The compensator receives the attenuated signal and generates a compensated signal. The second power detector measures the power of the compensated signal. The comparator receives the respective outputs from the first and second power detectors and generates a first error signal. The controller enables the fixed attenuation, correspondingly adjusts the variable attenuation, receives a second error signal, and provides a control signal to the network of attenuators to nullify an attenuation mismatch introduced between the fixed attenuation and the variable attenuation. A corresponding method for controlling an adjustable power level is also disclosed.

Abstract: A method for calibrating a supply voltage of an envelope tracking PA (power amplifier) is provided. The method includes obtaining a plurality of calibrated PA supply voltage values using a PA output power sequence having a plurality of different PA output power values. Thereby, an order of the PA output power values of the PA output power sequence is chosen such that a junction temperature of the PA is maintained during calibration within a temperature range that occurs during non-calibration envelope tracking operation.

Abstract: A User Equipment Apparatus is described, which include a Load Factor Determining Device and a Calculating Device. The Load Factor Determining Device is adapted for determining at least one load factor value of a neighbor sector. The Calculating Device is adapted for calculating a transmit power of the User Equipment Apparatus such that the at least one load factor value of a sector is considered.

Abstract: A measurement signal, the measurement signal indicative of a bias in a signal received via a communication channel, is generated. A detection signal, the detection signal indicative of presence of an unmodulated radio frequency (RF) carrier prior to a communication frame in the signal received via the communication channel, is generated using the measurement signal.

Abstract: A 0-to-90-degree phase shifter (13) includes a voltage-variable power supply (16), a transistor (17), a 90-degree divider (18), gain-variable amplifiers (19) (19-1 and 19-2), and a combiner (20). The 90-degree divider (18) divides an input signal into a signal to which a 90-degree phase is given and a signal to which no phase is given, and outputs the divided signals to the gain-variable amplifiers (19). The gain-variable amplifiers (19) (19-1 and 19-2) output signals whose amplitudes are changed according to a phase control amount to the combiner (20). The combiner (20) combines the signals input from the two gain-variable amplifiers (19) and outputs the combined signal. The impedance between the source and the drain of the transistor connected to the isolation port of the 90-degree divider (18) can be changed as appropriate.

Abstract: A method and apparatus for controlling the transmit power of a mobile BS in a wireless communication system are provided. The method includes determining a measurement value for determining if a noise power level is higher than an interference power level, when the measurement value is higher than a threshold value, determining that the noise power level is higher than the interference power level, and, when it is determined that the noise power level is higher than the interference power level, increasing transmit power.

Abstract: An electronic device may contain a transceiver that transmits and receives radio-frequency signals through antenna structures. Power amplifier circuitry may amplify the radio-frequency signals that are being transmitted. An adjustable voltage supply may supply an adjustable power amplifier bias voltage to the power amplifier circuitry. The power amplifier circuitry may include multiple power amplifiers each of which may handle signals transmitted using a different cellular telephone standard. For each cellular telephone standard, multiple modulation schemes may be supported. A power detector may provide real time measurements of output power. Control circuitry can adjust the transceiver circuitry based on the measurements of output power and can adjust the adjustable power amplifier bias voltage in real time to select an optimum power amplifier bias voltage based on the current cellular telephone standard, modulation scheme, power amplifier gain state, and operating frequency in use.

Abstract: Embodiments for at least one method and apparatus of transmitting a transmission signal through a plurality of antennas are disclosed. One method includes generating at least one dynamically adjustable phase shifted signal from the transmission signal. The transmission signal and the at least one dynamically adjustable phase shifted signal are separately amplified. The amplified transmission signal and the amplified at least one dynamically adjustable phase shifted signal are combined within a multiport network. An output signal for each of the plurality of antennas is generated by the multiport network.

Abstract: A method for controlling data transmission in a station in a wireless communication network is discussed. The method includes: receiving feedback information including error information including a signal to noise ratio (SNR) from a target station, the error information being measured by the target station; and controlling transmission parameters of the transmit data in a transmitting station based on the error information, wherein controlling the transmission parameters includes: increasing the transmit power when the SNR is lower than a predetermined value; initiating a beam-tracking process when the SNR is still lower than the predetermined value after increasing the transmit power; and decreasing a data transmission rate when the SNR is still lower than the predetermined value after initiating the beam-tracking process.

Abstract: A programmable controller and software that monitors periods an RF transmitter is active and a output power level during those periods of activity. These two values are multiplied together and accumulated over time to provide a value for the RF emissions for some period. A limit is set for the RF emissions for any period and if the RF emissions exceeds (or is expected to exceed given the current rate) the set limit, the system limits the subsequent emissions to not exceed the set limit. This reduction in emissions rate come at the cost of a small performance reduction.

Abstract: A wireless communication device includes: an amplifier configured to amplify a transmission signal to a given power level, the transmission signal being transmitted in wireless communication; and a processor coupled to the amplifier and configured to: select a communication protocol that is used for the wireless communication, from among a plurality of communication protocols including a first communication protocol and a second communication protocol of a lower communication speed than the first communication protocol, in accordance with a condition of the wireless communication, and control power source voltage of the amplifier by a control scheme determined in accordance with a communication speed of the selected communication protocol.

Abstract: A system for monitoring and controlling the power of a Radio Frequency (RF) signal in a short-range RF transmitter. An RF signal-generation unit generates the RF signal. A power amplifier amplifies the RF signal. An impedance-matching network matches the output impedance of the power amplifier to input impedance of an antenna. One or more RF power monitors monitor the voltage amplitude of the RF signal at the output of at least one of the RF signal-generation unit, the power amplifier and the impedance-matching network. The one or more RF power monitors further generate at least one alarm signal, based on the voltage amplitude of the RF signal. A control unit modifies at least one operating parameter of at least one of the RF signal-generation unit and the power amplifier, based on the at least one alarm signal generated by the one or more RF power monitors.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of detecting transmitter power. For example, a device may include a power detection circuit, coupled by a first coupler to a transmit chain, to provide a first output representing a measured non-calibrated transmission power over the transmit chain; a reference circuit, coupled to a reference voltage by a second coupler, to provide a second output representing a measured reference coupling factor; and a calibrator to determine a calibrated transmission power over the transmit chain based on the first and second outputs.

Abstract: Methods for use in a mobile device configured to communicate in a wireless network is described. The mobile device detects whether a a temperature condition exists. When the temperature condition exists, the mobile device presents a visual indication which indicates that the mobile device is in an emergency communication state. The mobile device further operates to prohibit user-initiated communication requests for non-emergency telephone calls via the wireless network, but allows a user-initiated communication request for an emergency telephone call via the wireless network. When the temperature condition fails to exist, the mobile device operates to allow user-initiated communication requests for emergency and non-emergency telephone calls via the wireless network.

Abstract: A voice data and RF integrated circuit (IC) includes a memory module that stores a least one application as a plurality of operational instructions, the at least one application having a plurality of power modes that each correspond to one of a plurality of use characteristics. A processing module executes the plurality of operational instructions and that determines a selected one of the plurality of power modes based on current use characteristics of the at least one application, and generates a power mode signal based on the selected one of the plurality of power modes. An on-chip power management circuit receives the power mode signal and that generates a plurality of power supply signals based on the power mode signal.

Abstract: A direct current (DC)-DC converter and radio frequency (RF) power amplifier (PA) circuitry are disclosed. The DC-DC converter provides an envelope power supply signal to the RF PA circuitry based on a first power supply output control signal. As a temperature of the RF PA circuitry changes, the envelope power supply signal may need to be adjusted to meet temperature compensation requirements of the RF PA circuitry. With adequate thermal coupling between the DC-DC converter and the RF PA circuitry, adjustments to the envelope power supply signal may be based on temperature measurements of the DC-DC converter. A desired correction of the first power supply output control signal is determined based on a measured temperature of the DC-DC converter and the temperature compensation requirements of the RF PA circuitry. The first power supply output control signal is adjusted based on the desired correction.

Abstract: Method and arrangement in a first carrier controller, associated with a network node. The method aims at providing distributed power management of a plurality of power amplifiers within a sector. The first carrier controller, the network node and the power amplifiers are comprised within a communication system. Also, at least one further carrier controller is comprised within the communication system. The first carrier controller is arranged for scheduling power allocation at each power amplifier of the radio frequency power estimated to be used by at least one carrier controlled by the first carrier controller. The method comprises allocating the estimated power usage to be used by the at least one carrier controlled by the first carrier controller during a predetermined time frame on one or more power amplifiers within the same sector. The allocation is based on a priority value of each carrier, dedicated to that sector or to a power amplifier within that sector.

Abstract: An energy saving (ES) management method for a base station includes: An integration reference point manager (IRPManager) initiates an ES enable/disable procedure or an ES activation/resumption procedure to an integration reference point agent (IRPAgent), where the ES enable/disable procedure is used to allow or prohibit an ES operation on the base station or a cell, and the ES activation/resumption procedure is used to cause the base station or the cell to go into or go out of an ES state. The technical solutions according to the embodiments of the present invention enable operators to perform unified management on an ES procedure for a base station at a base station level or a cell level.

Abstract: A power amplifier power controller in the power amplifier system monitors various operating conditions of the power amplifier, and controls the output transmit power of the power amplifier by coordinated control of both the input drive level to the power amplifier and the gain of the power amplifier. The power amplifier power controller controls the input drive level to the power amplifier so that the input drive level does not change substantially while adjusting the gain of the power amplifier to maximize the transmit power. The power amplifier power controller may also adjust the input drive level by some portion of the overall change required to the power of the power amplifier, while adjusting the gain of the power amplifier by the remaining portion of such overall change.