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| Number | Title | Issue Date |
| 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 quadrature. A phase training signal is applied to the at least one down-... | 05/08/2012 |
| 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 plurality of ports. The adjustable termination is adjustable based o... | 05/08/2012 |
| 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 providing a modulated signal; a variable gain amplifier (40) f... | 05/01/2012 |
| 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 control for the gain control signal provided to a pre-amplifier and ... | 04/17/2012 |
| 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 to the control signal. A transmitter includes an RF transmitter sectio... | 03/27/2012 |
| 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 transmit source, and mixing the dither modulation at a dither modulati... | 03/20/2012 |
| 8135362 | Symbol stream virtual radio organism method and apparatus A method of communicating using evolutionary synthesis for band-limited voice and data channels. ... | 03/13/2012 |
| 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 measurer, and a delay controller. The signal converters separate a baseband s... | 02/28/2012 |
| 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 signal characteristic in an input signal applied to an input of a switch... | 11/22/2011 |
| 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 invention is applied to reduce the PAP of an OFDM signal. According to an al... | 11/22/2011 |
| 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 amplitude and phase differences between the input and feedback I/Q signal... | 11/15/2011 |
| 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 modulated signal, and outputs to the power amplifier controller. The p... | 11/01/2011 |
| 8023909 | Data conversion using a serial interface clock in a power amplifier module In a mobile wireless telecommunication device, a bidirectional serial interface is used to transfer a digital representation of an analog value from a first chip associated with a power amplifier module to a second chip. In an exemplary embodiment, circuitry on the ... | 09/20/2011 |
| 8019292 | Power amplifier amplitude modulator system and method A system for controlling amplifier power is provided. The system includes a voltage envelope detector receiving a voltage signal and generating an attenuated voltage envelope signal. A current envelope detector receives a current signal and generates an attenuated c... | 09/13/2011 |
| 8014736 | Distortion compensating apparatus, wireless communicating apparatus, and distortion compensating method A distortion compensating apparatus includes following units. An information measuring unit measures a distortion component and an electric power component based on a radiation signal. A compensation coefficient calculating unit calculates a compensation coefficient... | 09/06/2011 |
| 8010065 | Power amplifier system and control method and control device thereof A power amplifier system, a control method thereof, and a control device thereof are provided. The power amplifier system operates in a non-linear switching mode according to an envelope amplitude of an input signal under control of the control device. When the powe... | 08/30/2011 |
| 8005444 | Multiple die integrated circuit assembly An integrated circuit (IC) includes a first die, a second die, a packaging substrate, and coupling circuit. The first die includes first circuitry and the second die includes second circuitry. The packaging substrate supports the first and second dies, wherein the f... | 08/23/2011 |
| 7979039 | Pre-distorting a transmitted signal for offset cancellation In one embodiment, the present invention includes a pre-driver to receive data of a first clock phase and to pre-drive the data, a driver coupled to the pre-driver to drive the data onto a link operable to be coupled to a receiver, and an offset driver to drive an o... | 07/12/2011 |
| 7974596 | Power control scheme for a power amplifier In one embodiment, a method includes detecting a power level of a power amplifier coupled to a transceiver during a current burst of a radio communication and providing the detected power level from the power amplifier to the transceiver and controlling a power leve... | 07/05/2011 |
| 7970362 | RF transmitter with compensation of differential path delay A transmitter has a power amplifier (40) to amplify an input signal having amplitude modulation, a supply voltage controller (10) to control a supply voltage of the power amplifier (40) according to the envelope, a sensor (R1) for sensing... | 06/28/2011 |
| 7949314 | Transmission output control apparatus Provided is a transmission output control apparatus including: a level control circuit operable to adjust a level of an inputted signal; a power amplifying circuit including a plurality of amplifying stages and being operable to amplify the signal whose level has be... | 05/24/2011 |
| 7933567 | Method and apparatus for achieving linear monotonic output power Techniques for achieving linear monotonic output power with piecewise non-linear and/or non-monotonic circuits are described. A coarse gain is selected for a first circuit having non-linear and/or non-monotonic characteristics. A fine gain is selected for a second c... | 04/26/2011 |
| 7933568 | Method and system for mitigating receiver saturation during simultaneous FM transmission and reception Aspects of a method and system for mitigating receiver saturation during simultaneous FM transmission and reception may include detecting a power of an RF signal received at an antenna. A power of one or more baseband signal components corresponding to the RF signal... | 04/26/2011 |
| 7933569 | Timing adjustment method for wireless communication apparatus A wireless communication device including: a transmitter including two DA converter units which convert two digital signals into analog signals; a combiner which combines the analog signals; a distributor which extracts a portion of the combined signal as a feedback... | 04/26/2011 |
| 7917105 | RF power amplifier controller circuit with compensation for output impedance mismatch A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller c... | 03/29/2011 |
| 7912430 | Circuit arrangement for wirelessly exchanging data and RFID chip card device A circuit arrangement for wirelessly exchanging data with a reader device, including an antenna for converting electromagnetic radiation into an antenna voltage, an analogue circuit for demodulating an information signal based on the antenna voltage, and a digital c... | 03/22/2011 |
| 7907920 | 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 control for the gain control signal provided to a pre-amplifier and ... | 03/15/2011 |
| 7890067 | Linear RF amplifier with polar feedback A system for power amplification of an RF signal including polar feedback control. The system may include a feedback-controlled modulator configured to modulate an RF signal based on a feedback-corrected control signal. The modulator is further configured to generat... | 02/15/2011 |
| 7873332 | Method and system for mitigating a voltage standing wave ratio Methods and systems for mitigating a voltage standing wave ratio in a transmitter are disclosed and may comprise calibrating an output power of a power amplifier integrated within a chip using a resistor that models an impedance of an antenna that is externally coup... | 01/18/2011 |
| 7873333 | Transmitter circuits and apparatus of wireless application In conventional polar-loop transmitter circuits, using two feedback circuits intended to control the amplitude in an open loop and phase of a power output in closed loop, respectively, during transmission, causes current consumption to increase during delivery of a ... | 01/18/2011 |
| 7873334 | Power control circuitry for a mobile terminal application The present invention generally relates to the field of automatic power control (APC) circuitries used in the analog front end of a mobile transmitter. It particularly refers to a power control circuitry and a corresponding method for controlling the power level of ... | 01/18/2011 |
| 7840197 | Highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals A highly linear and very low-noise down-conversion mixer for extracting weak signals in the presence of very strong unwanted signals is disclosed. Aspects of an embodiment may include a source follower circuit in a transmitter front end of a mobile terminal. The sou... | 11/23/2010 |
| 7835708 | Radio transmitter front-end with amplitude and phase correction and methods for use therewith A radio transmitter front-end for use in a voice data and RF integrated circuit (IC) includes a phase correction module that produces a phase adjusted signal in response to a phase modulated signal and at least one phase correction signal. An amplitude correction mo... | 11/16/2010 |
| 7817973 | Method and apparatus of Doherty-type power amplifier subsystem for wireless communications systems Method and apparatus for high-efficiency radio frequency (RF) power amplification. A method high-efficiency RF power amplification comprises receiving control and power signals, sampling power output of a main stage amplifier, comparing sampled amplifier output powe... | 10/19/2010 |
| 7792505 | Power amplifier efficiency using error estimate and data rate A method of adjusting a power amplifier may include producing a power measure of an output signal of the power amplifier and estimating an estimated transmission error of the output signal from the power measure. The estimated transmission error may be compared with... | 09/07/2010 |
| 7783269 | 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 modulated signal, and outputs to the power amplifier controller. The p... | 08/24/2010 |
| 7761065 | RF power amplifier controller circuit with compensation for output impedance mismatch A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller c... | 07/20/2010 |
| 7747230 | Transmission modulation apparatus A transmission modulation apparatus capable of dealing with characteristic variations of a high-frequency power amplifier without always forming an amplitude loop. Transmission modulation apparatus 100 is configured with level detector 140 that receive... | 06/29/2010 |
| 7738845 | Electronic parts for high frequency power amplifier and wireless communication device The present invention provides electronic parts for amplifying high frequency power capable of expanding a dynamic range of an output power detection circuit, obtaining a continuous detection output having no inflexion point from a low region of output power to its ... | 06/15/2010 |
| 7711333 | Detector with complementary response slope A measurement signal from a detector may have a complementary polarity. For example, an RF power detector may generate an output signal that decreases in magnitude in response to an increasing input signal. In one embodiment, the RF power detector may include a seri... | 05/04/2010 |
