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8180302 |
Polar modulator with signed amplitude reducing phase transitions
A polar modulator including a signal converter configured to provide a phase signal and an amplitude signal based on at least one received signal is disclosed. A digital-to-analog converter is...
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8175553 |
Wireless communication unit, linearised transmitter circuit and method of linearising therein
A wireless communication unit includes a linearised transmitter having a forward path and a feedback path, respectively comprising at least one up-mixer and down-mixer, and forming two loops in...
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8175549 |
Closed loop transmitter IQ calibration
A novel and useful apparatus for and method of closed loop IQ calibration for use in a transmitter. The IQ calibration mechanism functions to provide calibration of IQ imbalance in the presence of...
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8175554 |
Radio frequency communication devices and methods
One embodiment relates to a radio frequency (RF) communication device. The RF communication device includes a coupler having a plurality of ports and an adjustable termination coupled to one of the...
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8170511 |
Equalizer system for emitting a quasi-constant power output RF signal in a frequency band
The invention refers to an equalizer system for emitting a quasi-constant power output RF signal in a first frequency band, the system comprising a programmable RF signal generator (10) for...
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8160121 |
System and method for distributed input-distributed output wireless communications
A system and method are described for dynamically adapting the communication characteristics of a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”). For example, a met...
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8160519 |
Compensating for variations in the response of a power supply
Apparatus includes an equalizer having a signal input, a control input and an output; a controllable power supply having a control input and an output, the input of the controllable power supply...
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8160515 |
Negative amplitude polar transmitter
A polar transmitter includes a phase monitoring unit for monitoring input modulating data. When a phase transition exceeds a phase transition threshold, the phase monitor unit can signal an...
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8160517 |
Control of switcher regulated power amplifier modules
Various embodiments described herein relate to a power management block and an amplification block used in the transmitter of a communication subsystem. The power management block provides improved...
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8155235 |
Modulation device and demodulation device
Provided is a modulation device which generates a phase modulation signal and an amplitude modulation signal and can correct an I/Q orthogonal shift and reduce degradation of the ON/OFF ratio. In...
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8150341 |
Apparatus for transmitting a signal below a standard transmit power in a network
A transmitter includes a detection element to determine when a current power requirement of a communication link is less than the standard transmit power. The current power requirement may be...
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8145156 |
Configuration controller for receiver and transmitter
A configuration controller generates one or more control signals based on channel data. A receiver includes an RF receiver section and a receiver processing module that are configured in response...
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8145159 |
Method and apparatus for optimizing output power levels in power amplifiers
Some embodiments discussed relate to an apparatus comprising a power amplifier module. The power amplifier module includes a plurality of sensors, and a first digital communication port configured...
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8140034 |
Frequency locked feedback loop for wireless communications
A method and systems for a frequency locked feedback loop for wireless communications are provided. The method includes applying dither modulation from a harmonic modulator to modulated data at a...
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8140005 |
Modular satellite transceiver
A modular satellite transceiver is provided according to some embodiments of the disclosure. The modular transceiver may include an RF module and a back end module. The RF module may operate in a...
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8140031 |
Transmitter built-in production line testing utilizing digital gain calibration
A novel and useful self-calibration based production line testing mechanism utilizing built-in closed loop measurements in the radio to calibrate the output power of an external power amplifier...
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8135430 |
Method and system for WCDMA power amplifier closed loop power control
Methods and systems for WCDMA power amplifier closed loop power control are disclosed and may include determining a magnitude of an output RF signal generated by a power amplifier (PA), and...
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8135362 |
Symbol stream virtual radio organism method and apparatus
A method of communicating using evolutionary synthesis for band-limited voice and data channels.
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8126411 |
Apparatus and method for power amplification with delay control in wireless communication system
A transmitting apparatus and method for power amplification with delay control in a wireless communication system are provided. The apparatus includes signal converters, a delay difference...
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8116701 |
Circuit arrangement and method for setting an analog output signal
A circuit arrangement includes a signal processing unit and a regulation unit. The signal processing unit processes an input signal to form an analog output signal. The regulation unit is coupled...
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8112044 |
Transceiver system and method of using same
A transceiver is provided for wireless communication. The transceiver can include a bias source, a transformer including a primary side and a secondary side, and a switching device. During a...
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8107902 |
Method and apparatus for optimizing current consumption of amplifiers with power control
Apparatus and method for reducing the current consumption and increasing the efficiency of an RF power amplifier (PA), according to which the load, connected to the output stage of the PA, tuned...
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8107901 |
Feedback loop with adjustable bandwidth
A feedback loop with an adjustable closed loop frequency response. The feedback loop contains adjustable pole (212, 213) and adjustable zero elements (220,221) for changing the pole and/or zero...
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8098758 |
Digital baseband transmitter with digital RF/IF support in GSM/GPRS/EDGE compliant handsets
Certain aspects of a digital baseband transmitter with digital RF/IF support in GSM/GPRS/EDGE compliant devices may comprise receiving digitized data within a chip. A control signal may be...
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8099066 |
System and method for controlling true output power of a transmitter
A transmitter power control system includes a voltage detector that generates a voltage signal that is proportional to an output voltage of a power amplifier of a transmitter. A voltage scaler...
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8099058 |
Enhanced wideband transceiver
A method for operating an integrated transceiver, comprising coupling an operating transmitter and an operating receiver within the integrated wideband receiver, inputting a signal into the...
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8095088 |
Compact wide dynamic range transmitter for point to point radio
A radio frequency transmitter comprising a modem which receives one or more input data signals and an adaptive predistortion signal and provides a baseband in-phase signal and a baseband quadrature...
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8095085 |
Automatic antenna tuning unit for software-defined and cognitive radio
A closed-loop controlled antenna tuning unit (ATU) system includes a return loss detector connected to sample an RF signal generated by a signal source to provide a return loss signal. A matching...
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8095094 |
Communication semiconductor integrated circuit, communication electronic component and wireless communication system
A communication semiconductor integrated circuit includes a phase control loop and an amplitude control loop. A gain of a variable gain amplifier when it is detected from an output of the...
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8095091 |
Transmit power amplification control for wireless device
A system and method are disclosed for controlling transmit power amplification in a wireless transmitting device. A processor receives data to determine whether a communication channel from a...
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8090320 |
Strong signal tolerant OFDM receiver and receiving methods
Circuits and methods are disclosed for compensating for received signal distortion caused by non-linearities in wideband receivers. An exemplary receiver includes a distortion waveform generator...
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8090036 |
Transmitter and carrier leak detection method
A carrier leak compensating device (2) for adding compensation values to a received transmission signal, an analog quadrature modulator (4), a feedback device (5-7) for receiving and...
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8085175 |
Linearizer
The present invention provides an advanced adaptive predistortion linearization technique to dramatically reduce nonlinear distortion in power amplifiers over a very wide instantaneous bandwidth...
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8085107 |
Transmission module
The invention relates to a transmission module for transmitting data in the form of useful digital signals by modulation of a carrier, determined by the useful signals, by means of frequency shift...
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8073407 |
Radio communication device and power supplying method for radio communication device
A radio communication device in which the output transmission signal of a high-frequency power amplifying part is sent out to an antenna via a circulator, a high-frequency signal reflected from the...
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8068797 |
Gain control methods for wireless devices and transmitters
A gain control process (1102) executed at a transmitter (500) generates (1314) a gain ramp signal (1206) having a delay component (1224) and a gain component (1226). The process (1102) further...
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8068556 |
Flexible, reconfigurable, power efficient transmitter and method
A flexible, reconfigurable, power efficient transmitter device and method is provided. In one embodiment, the method includes receiving outbound data and determining a mode of operation. When...
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8068557 |
IQ-modulator pre-distortion
An IQ-modulator pre-distorter includes an iteratively updated digital filter (gQ0, gQ1) for filtering one of the branches of an IQ-signal to compensate for IQ-modulator generated amplitude errors....
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8064853 |
Method and system for reduction of peak-to-average power ratio of transmission signals comprising overlapping waveforms
The present invention provides a method and system for reducing the peak to average power ratio (PAP) of a signal with low computational complexity. According to one embodiment, the present...
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8064852 |
Methods and apparatus for dynamically compensating for DC offset drift and other PVT-related signal variations in polar transmitters
Methods and apparatus for dynamically compensating for signal variations in communications transmitters employing switch-mode PAs. An exemplary method includes first identifying a predetermined...
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8064855 |
Transmission power controller
A transmission apparatus has two modes of power amplifier operation, in which mode 1 is inherently accurate, mode 2 is inherently less accurate, and measurement of a power amplifier output from...
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8060038 |
Radio transmitter using Cartesian loop
A radio transmitter including a combiner which combines input I/Q signals with feedback I/Q signals, a power amplifier which amplifies the quadrature modulated signal, a detector which detects...
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8059777 |
Method and apparatus for generating phase shifted local oscillator signals for a feedback loop on a transmitter
A transmitter is provided with a local oscillator (LO) processing unit to maintain stability in the transmitter's feedback loop. The LO processing unit includes at least one delay locked loop (DLL)...
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8055215 |
Transmission circuit and communication device
Provided is a transmission circuit capable of operating with high linearity and with low noise. An AM variable fc filter uses an AM cutoff frequency to remove a high frequency component from an...
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8055217 |
Adaptive complex gain predistorter for a transmitter
Symbols are transmitted in a Cartesian transmitter by pre-distorting an input signal X having in-phase and quadrature components using a first compensation lookup table operable to hold complex...
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8055212 |
Transmitter phase shift determination and compensation
A wireless communication transmitter is configured to determine transmitter phase shift, and correspondingly includes a derivation circuit, one or more slope polarity tracking circuits, and a phase...
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8050637 |
Polar modulation transmitter, adaptive distortion compensation processing system, polar modulation transmission method, and adaptive distortion compensation processing method
An object of the invention is to provide a polar modulation transmitter that can perform adaptive distortion compensation processing without the need for a synchronization adjustment circuit for...
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8050638 |
Power amplifier controller with polar transmitter
A power amplifier controller controls a power amplifier and is coupled to a polar modulator. The polar modulator generates an amplitude component and a phase-modulated component of the desired RF...
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8045939 |
Method for controlling a linear amplifier and power amplifier arrangement
The present invention relates to a method for controlling an amplifier unit having at least one drive signal input connection 1, at least one power supply voltage input connection 2 and an output...
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8041381 |
Radio network controller and transmission power control method
A radio network controller includes a block error detection unit configured to receive a data block from the base station and to detect a block error, and a target SIR calculation unit configured...
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