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Class 455/127.2 - Gain control


Subclass of Class 455 - Telecommunications
Definition: Subject matter including detail of controlling the gain
No. of applications: 113
Last issue date: 05/03/2012


1      
Application No.Application TitleIssue Date
20120108189Transmitter Linearized Using Bias Deviation Gain Adjustment And Method Therefor
A transmitter (50) includes a low power memoryless nonlinear predistorter (58) that inserts predistortion configured to address a nonlinearity (146) corresponding to gain droop and another nonlinearity (148) corresponding to deviations from a...
05/03/2012
20120071119GAIN-CONTROL METHODS OF TRANSMITTER MODULATORS
An apparatus comprising a plurality of switchable full step mixer unit cells, wherein each switchable full step unit cell is configured to, when the full step transceiver mixer unit cell is turned on, increase the gain experienced by an electronic signal by a full step ...
03/22/2012
20120052824Variable gain control transformer and RF transmitter utilizing same
According to one embodiment, a variable gain control transformer comprises a primary winding connected to differential inputs of the variable gain control transformer, a secondary winding for providing a single ended output to a load, and an output control circuit coupl...
03/01/2012
20120052825SELECTABLE PA BIAS TEMPERATURE COMPENSATION CIRCUITRY
Radio frequency (RF) power amplifier (PA) circuitry, which transmits RF signals is disclosed. The RF PA circuitry includes a final stage, a final stage current digital-to-analog converter (IDAC), and a final stage temperature compensation circuit. A final stage current ...
03/01/2012
20120021708METHOD AND APPARATUS FOR ALARMING IN A POWER SUPPLY MODULATED SYSTEM
A communication device is presented that has different processors and a power amplifier. One of the processors receives a signal from a monitor and indicates that an alarm exists to a diagnostics module. The other processor uses the envelope signal of the input signal t...
01/26/2012
20120021704METHOD OF POWER AMPLIFIER SWITCHING POWER CONTROL USING POST POWER AMPLIFIER POWER DETECTION
Various embodiments described herein relate to a power management block and one or more amplification blocks used in the transmitter of a communication subsystem. The power management block provides improved control for the gain control signal provided to a pre-amplifie...
01/26/2012
20120015615DEVICE, SYSTEM AND METHOD OF SELECTIVELY CONNECTING BETWEEN A TRANSMIT CHAIN AND AN ANTENNA
Some demonstrative embodiments include devices, systems and/or methods of selectively connecting between a transmit chain and an antenna. For example, a device may include a transmit chain and a non-active connector module configured to electrically connect the transmit...
01/19/2012
20110300818SAW-LESS TRANSMITTER
A SAW-less transmitter includes an up-conversion mixing module, a frequency translated BPF (FTBPF), an output module, and a power amplifier driver. The up-conversion mixing module converts an outbound symbol stream into an up-converted signal. The FTBPF frequency transl...
12/08/2011
20110294440HIGH POWER AMPLIFIER, WIRELESS TRANSMITTER, WIRELESS TRANSCEIVER, AND METHOD FOR MOUNTING HIGH POWER AMPLIFIER
A high power amplifier that has a high heat dissipation effect and is produced at low cost, a wireless transmitter and a wireless transceiver with the high power amplifier and a method for mounting a high power amplifier are provided. The high power amplifier comprises ...
12/01/2011
20110269404ACTIVE ANTENNA DEVICE, NETWORK DEVICE AND ACCESS POINT OF A WIRELESS NETWORK
An active antenna device, a network device, an access point equipped with the network device and a plurality of distributed active antenna devices form components of a communication system. The active antenna device contains an antenna unit, an amplifier unit and a cont...
11/03/2011
20110269416TRANSMITTER
The present invention provides a transmitter which performs matching between parts, corresponding to switching between bands for transmission signals and performs more suitable matching in response to unintended changes in device characteristics inside the parts due to ...
11/03/2011
20110256838METHODS FOR DETERMINING OPTIMUM POWER SUPPLY VOLTAGES FOR RADIO-FREQUENCY POWER AMPLIFIER CIRCUITRY
Electronic devices with wireless communications capabilities are provided. The electronic device may include storage and processing circuitry, power amplifier circuitry, power supply circuitry, etc. The storage and processing circuitry may direct the power amplifier cir...
10/20/2011
20110256839ADDITION CIRCUIT, POWER AMPLIFIER CIRCUIT USING SAME, AND TRANSMISSION DEVICE AND COMMUNICATION DEVICE USING THE POWER AMPLIFIER CIRCUIT
Disclosed are an addition circuit that makes it possible to add two vector signals in a high-frequency region, a power amplifier circuit using the same, and a transmission device and communication device using the power amplifier circuit. Disclosed is an addition circui...
10/20/2011
20110237210APPARATUS AND METHOD FOR CONTROLLING GAIN OF POLAR TRANSMITTER
Disclosed is an apparatus for transmitting complex signals in a wireless communication system. The present invention, there is provided a method for controlling gain according to a magnitude change of output signals in a polar transmitter including an amplification unit...
09/29/2011
20110217940Radio-Frequency Transmitter and Amplifier
A method is provided for reducing non-linear effects in an electronic circuit including an amplifier. The method may include receiving a modulated signal at an input of the amplifier, the modulated signal comprising a baseband signal modulated by an oscillator frequency...
09/08/2011
20110159826WIRELESS COMMUNICATION UNIT, SEMICONDUCTOR DEVICE AND POWER CONTROL METHOD THEREFOR
A wireless communication unit comprises a transmitter comprising a power amplifier, an inner feedback power control loop having a power control logic module comprising loop priming logic module operably coupled to the power amplifier, and a switchable outer digital loop...
06/30/2011
20110149917Method and Apparatus for Compensating Code Channel Power in a Transmitter
It has now been found that in some transmitter implementations which transmit multiple code channels, for example CDMA transmitters, the observed power for each code channel at the output relative to the other code channels is dependent upon the total transmit power due...
06/23/2011
20110151808System And Method For Power Control For A Surface Acoustic Wave (SAW) Filter-Less Transmitter
A power control system includes a transmitter having a plurality of gain-adjustable elements, a switchable attenuator located at an output of the transmitter, a gain-adjustable power amplifier coupled to the attenuator, and a power control element responsive to a power ...
06/23/2011
20110130106POWER AMPLIFICATION DEVICE, AND TRANSMISSION DEVICE AND COMMUNICATION DEVICE BOTH USING THEREOF
To provide a power amplification device having a function of preventing deviation of the amplitude and phase of an output signal having amplified envelope variation from a predetermined value, and a transmission device and a communication device both using the same. A p...
06/02/2011
20110130105METHOD AND APPARATUS FOR OPTIMIZING TRANSMITTER POWER EFFICIENCY
A transmitter for a mobile device utilizes at least one mapper in order to improve power efficiency while still meeting out of band spurious emissions and waveform quality requirements. An encoder and modulator generates an encoded and modulated transmit signal from an ...
06/02/2011
20110124305FORWARD LINK SIGNALING WITHIN A WIRELESS POWER SYSTEM
Exemplary embodiments are directed to forward link signaling. A method may include modulating an input bias signal of a power amplifier according to data to be transmitted on a wireless power transmit signal. The method may further include modulating an amplitude of the...
05/26/2011
20110124306CURRENT CANCELING VARIABLE GAIN AMPLIFIER AND TRANSMITTER USING SAME
A current canceling CMOS variable gain amplifier includes a first leg and a second leg. The first leg has a first input line, a first output line, a first ON transistor, a first control transistor and a first subtracting transistor. The second leg has a second input lin...
05/26/2011
20110117866TEMPERATURE IMPERVIOUS RADIO DEVICE AMPLIFIER OUTPUT POWER CONTROL
A radio device includes an amplifier and first and second independently operable variable voltage supply inputs to the amplifier, providing a consistent output power range for the radio device across widely varying temperature conditions....
05/19/2011
20110105061Apparatus and method for accurate and efficient transmit power control
A technique to provide accurate and efficient transmit power control by providing offset values to modify a base input gain value for a gain control circuit used to set a transmit power gain in a mobile phone. The modified gain value compensates for a ripple offset and ...
05/05/2011
20110076970TRANSMITTER APPARATUS, SYSTEMS, AND METHODS
Apparatus, systems, and methods are disclosed that operate to drive an output with a data signal and to boost a potential of the output in response to a boost signal. Additional apparatus, systems, and methods are disclosed....
03/31/2011
20110070848Dynamic stability, gain, efficiency and impedance control in a linear/non-linear CMOS power amplifier
A power amplifier (PA) provides dynamic stability and gain control for linear and non-linear operation. The PA operates with a baseband processor and a transmitter, in which the PA receives a signal from the transmitter for power amplification prior to transmission of t...
03/24/2011
20110039505INTEGRATED MULTIMODE RADIO TRANSMITTER AND COMPONENTS THEREOF
An integrated multi-mode radio transmitter includes a multiplexor and a shared front-end. The is operable to select an IF signal of a plurality of IF signals based upon a selection signal that is indicative of a particular operational mode of the one of the plurality of...
02/17/2011
20110003561METHOD AND ARRANGEMENT IN A COMMUNICATION SYSTEM
Methods and arrangements for generating adjustment commands in a node. The adjustment commands adjust the transmission power of radio signals. The radio signals are sent over at least a first channel and a second channel. The adjustment is performed by adjusting a gain ...
01/06/2011
20100323646POWER AMPLIFIER AND SIGNAL TRANSCEIVING SYSTEM
A power amplifier and a signal transmitting system using the power amplifier are disclosed. The power amplifier includes a circuit board, a power amplifier, and a structural component. The circuit board is fixed on the structural component. The power amplifier is fixed ...
12/23/2010
20100317303SELF-CALIBRATING DIRECT CONVERSION TRANSMITTER WITH CONVERTING/STEERING DEVICE
A steering and mixing module comprises a double balanced switch quad and a steering quad. The double balanced switch quad comprises a first output pair, and the first output pair is coupled to a first load stage. The steering quad comprises a second output pair, and the...
12/16/2010
20100311362Gain compensation device over temperature and method thereof
A gain compensation device for adjusting gain of an amplifier over temperature is disclosed. The gain of the amplifier is controlled by signals on a gain control end of the amplifier. The gain compensation device comprises a temperature compensation generator, an adder,...
12/09/2010
20100311366METHOD AND SYSTEM FOR A TRANSMITTER LOFT CANCELLATION SCHEME THAT MAINTAINS IQ BALANCE
Methods and systems for a transmitter LOFT cancellation scheme that maintains IQ balance are disclosed. Aspects of one method may include providing current compensation to both differential inputs of a mixer for each of I and Q channels. An initial current compensation ...
12/09/2010
20100297971ELECTRONIC DEVICE WITH AN IMPROVED ANTENNA ARRANGEMENT
An electronic device comprising an antenna arrangement with first and second antenna groups with first (122, 142) and a second (124, 144) radiation elements. The first and second radiation elements in each group have first and second respective polarizatio...
11/25/2010
20100297970METHOD AND SYSTEM FOR A DYNAMIC TRANSMISSION GAIN CONTROL USING A DEDICATED POWER AMPLIFIER DRIVER IN A RADIO FREQUENCY TRANSMITTER
A transmitter RF front-end integrated on a single substrate is enabled to determine whether associated IF amplification stage provides a required transmission gain for transmitting an output signal of an application. A dedicated power amplifier driver within the transmi...
11/25/2010
20100291975ELECTRONIC DEVICE WITH DATA-RATE-DEPENDENT POWER AMPLIFIER BIAS
Wireless circuitry in an electronic device may contain output power amplifier circuitry for amplifying transmitted radio-frequency signals. The power amplifier circuitry may be powered using a bias voltage. The magnitude of the bias voltage can be selectively reduced to...
11/18/2010
20100279635PLL CALIBRATION
A method for applying a modulation signal to a phase locked loop comprises filtering the modulation signal to provide a low frequency component and a high frequency for application to respectively the feedback and feedforward paths of a phase locked loop. The high frequ...
11/04/2010
20100273431GAIN INDEX BASED RADIO CALIBRATION
A wireless device includes an antenna, Radio Frequency (RF) circuitry, and baseband processing circuitry. The baseband processing circuitry couples to the RF circuitry and is operable to determine operational calibrations settings that may include pre-distortion charact...
10/28/2010
20100233973ANTENNA BEAM FORMING SYSTEMS, METHODS AND DEVICES USING PHASE ADJUSTED LEAST SQUARES BEAM FORMING
Methods of operating a transceiver including an antenna having a plurality of antenna feed elements include providing a plurality of gain constraint values associated with respective ones of the plurality of geographic constraint points within a geographic region, selec...
09/16/2010
20100233978INPUT DRIVE CONTROL FOR 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 the ...
09/16/2010
20100227578 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 the ...
09/09/2010
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