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| Number | Title | Issue Date |
| 8150342 | Transmitter, RF transmitter signal processor and method for operation of transmitter An internal operation of RF IC is adjusted so that the level of an RF transmitter signal is substantially stopped from rising, or made to descend in course of ramp-up of the RF transmitter signal. This adjustment is enabled by ramp-up adjustment data Last 4 symbols ... | 04/03/2012 |
| 8150343 | Dynamic 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 ... | 04/03/2012 |
| 8121562 | Transmitter and hybrid communication method for capacity optimization and outage minimization Embodiments of a system and method for communicating over a fading channel are generally described herein. A transmitter uses a water-filling technique at lower power levels when the channel is not experiencing fading and uses channel-inversion technique at higher p... | 02/21/2012 |
| 8107904 | Apparatus and method for power transmitter in wireless communication system An apparatus and a method for an Envelope Elimination and Restoration (EER) power transmitter are provided. The apparatus includes a signal separator for splitting a transmit signal to an amplitude component and a phase component, an orthogonal modulator for modulat... | 01/31/2012 |
| 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 comparator that the amplitudes of the reference signal and the feedback signal... | 01/10/2012 |
| 8090331 | Method 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... | 01/03/2012 |
| 8081937 | Gain-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 s... | 12/20/2011 |
| 8041316 | Transmission circuit, transmission method, and use A method for the transmission and use of a power amplifier and transmission circuit of a radio network is provided that includes a power amplifier, which is connectable to an antenna, a counter whose output is connected to a control input of the power amplifier to o... | 10/18/2011 |
| 8019295 | Transmitting power level controller and related method A transmitting power level controller of a communication system includes a radio-frequency unit for generating a communication signal and a power amplifier for amplifying the communication signal to generate a transmitting signal. The transmitting power level contro... | 09/13/2011 |
| 8014739 | Radio terminal and transmission power control method A radio terminal includes a first part that has a first gain switchable between first and second levels, a second part that continuously controls a second gain, and a control part. A first range of the combined gain of the first and second gains obtained by the seco... | 09/06/2011 |
| 8010066 | Digital transmission circuit and interface providing selectable power consumption via multiple weighted driver slices A digital transmission circuit and interface provide selectable power consumption via multiple weighted driver slices, improving the flexibility of an interface while reducing transmitter power consumption, area and complexity when possible. A cascaded series of dri... | 08/30/2011 |
| 7995977 | High frequency power detector circuit and radio communication device First and second envelope detector circuits have, respectively, a resistance row, a capacitative element connected to the resistance row in parallel and a transistor connected between a connection point between the resistance row and the capacitative element and a p... | 08/09/2011 |
| 7983637 | Amplifier, radio transmitting apparatus, and radio receiving apparatus An amplifier includes: an input terminal configured to have an input signal of a center frequency f0 input; a dividing unit that divides the input signal; first through ith blocks configured to have the divided input signal transmitted; a combining unit t... | 07/19/2011 |
| 7970364 | Strategy for using the envelope information within a closed loop power control system A power control system includes a reference path filter used to suppress high frequencies in an input signal and generate a filtered envelope signal, a reference path amplifier to scale the filtered input signal based on a gain signal and generate a reference signal... | 06/28/2011 |
| 7899419 | Method 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... | 03/01/2011 |
| 7894782 | Multi-input multi-output transceiver with transmit power management based on receiver parameter and method for use therewith An RF transceiver includes a plurality of RF receivers for receiving a corresponding one of a plurality of received signals. Each of the plurality of the RF receivers includes an AGC module that generates an automatic gain control (AGC) signal based on the strength ... | 02/22/2011 |
| 7869776 | Method and apparatus for regulating the transmitted power in multi-rate wireless communication systems A method and apparatus for regulating Tx power in a multi-rate mobile device transmitter containing signal dependent gain stages. A data rate and signal format indicator signal corresponding to the transmitted signal, and a desired reference power signal are fed to ... | 01/11/2011 |
| 7860468 | Programmable variable gain amplifier and RF receiver including the same A programmable variable gain amplifier includes at least three amplifiers. A first amplifier is configured to amplify an input signal. A second amplifier, which includes a programmable output load stage, is configured to receive an output signal from the first ampli... | 12/28/2010 |
| 7826810 | Multiband radio with transmitter output power optimization Transmitter (116) designed to automatically reconfigure one or more circuit parameters associated with an RF power amplifier (210) in response to certain user input commands. Specifically, a transmitter circuit configuration is automatically modified u... | 11/02/2010 |
| 7805116 | Gain control methods for wireless devices and transmitters Embodiments of wireless devices and transmitters are provided, which perform embodiments of automatic gain control methods. The embodiments of wireless devices and transmitters include a ramp generator, a digital gain signal generator, a combiner, and a variable gai... | 09/28/2010 |
| 7773961 | Apparatus and method for channel estimation without signaling overhead A base station is disclosed for communicating with a subscriber station in a wireless network without requiring training signaling overhead. The base station is capable of combining a pilot signal with a data symbol and transmitting the combined pilot signal and dat... | 08/10/2010 |
| 7761067 | Iterative filter circuit calibration Apparatus, systems, and methods implementing techniques for calibrating a filter circuit. A comparator generates an output based on a filter output amplitude signal and a reference amplitude signal. A calibration logic unit receives the comparator output and produce... | 07/20/2010 |
| 7706762 | Signal processing circuit and signal processing method An objective of this invention is to obtain a signal processing circuit and a signal processing method that reduce temperature-induced distortion when inputting a signal to a mixer and changing the frequency of the signal to a desired frequency. If a sensing result ... | 04/27/2010 |
| 7706761 | Power amplifying circuit in mobile terminal The present invention relates to a power amplifying circuit of a mobile terminal and, more particularly, to a voltage gain control circuit in a mobile terminal which is capable of acquiring a variable voltage gain. The present invention includes a transceiver contro... | 04/27/2010 |
| 7697907 | System and method for controlling the transmit power of a wireless module A method (600) for controlling a transmit power of an interface module (230) is provided. The method includes generating a transmit power code at a power code generator (240) (610); receiving the transmit power code at the interface modul... | 04/13/2010 |
| 7693499 | Transmission path and method for signal processing in a transmission path In a transmission path, an input signal is amplified in a manner dependent on a digital control word present and is processed by an arrangement for signal processing to form an output signal. A digital setting word is read out from a memory device in a manner depend... | 04/06/2010 |
| 7672648 | System for linear amplitude modulation System for linear amplitude modulation. Apparatus is provided for linear amplitude modulation of an amplifier. The apparatus includes a processing circuit that receives an amplitude modulation signal and produces one or more amplifier control signals that are couple... | 03/02/2010 |
| 7672649 | Controller for a radio-frequency amplifier A controller for an RF amplifier, in particular for a RF amplifier of an MR tomography apparatus, has an IQ control element for adjusting the magnitude and phase an RF signal that is be fed to the RF amplifier. The IQ control element has a signal splitter that split... | 03/02/2010 |
| 7643805 | Peak detector and fixed gain amplifier circuit for automatic gain control and variable gain amplifier circuit A variable gain amplifier (VGA) circuit and an automatic gain control (AGC) method thereof are disclosed. The VGA circuit includes an amplifier circuit and an AGC circuit. The amplifier circuit amplifies an input signal to an output signal according to a predetermin... | 01/05/2010 |
| 7593702 | Open-loop RF transmitter output power control for increased power efficiency Open-Loop RF Transmitter Output Power Control for Increased Power Efficiency (NC #98068) method includes determining a desired RF output power and obtaining a battery voltage value; determining a supply control voltage, a bias control voltage and a highest power eff... | 09/22/2009 |
| 7593703 | Frequency switch for multiband power amplifier applications and multiband/multistandard power amplifier module A frequency switch (1), in particular for use in a multiband/multistandard power amplifier module (11, 17), comprising at least two output ports, a first output port (7) being arranged within a first output path (8) and a second output po... | 09/22/2009 |
| 7593701 | Low noise CMOS transmitter circuit with high range of gain A CMOS automatic gain control (AGC) circuit that receives an analog control voltage and generates a temperature compensated gain voltage to linearly control the gain of a variable gain circuit operating in the sub-threshold region. A PTAT circuit having a resistor n... | 09/22/2009 |
| 7583941 | Apparatus and method to adjust and filter current DAC signals A technique to adjust gain and DC level of current DAC signals with offset to generate a voltage signal that is used to control power level of a power amplifier. One or more current mirrors from a set of current mirrors is programmably selected to set gain of a curr... | 09/01/2009 |
| 7558540 | Method and apparatus for regulating the transmitted power in multi-rate wireless communication systems A method and apparatus for regulating Tx power in a multi-rate mobile device transmitter containing signal dependent gain stages. A data rate and signal format indicator signal corresponding to the transmitted signal, and a desired reference power signal are fed to ... | 07/07/2009 |
| 7558542 | System and method for providing a transmitter for polar modulation and power amplifier linearization A transmitter circuit is disclosed for use in a multi-frequency wireless communication system. The transmitter circuit includes an input modulation unit, a phase modulation system, and an amplitude modulation system. The input modulation unit receives at least one s... | 07/07/2009 |
| 7558541 | Amplifier gain and phase stabilizer Methods and apparatus are provided for stabilizing the phase and gain of an amplifier in a power pooling arrangement. A pilot signal combining a reference carrier frequency with a reference sideband frequency is passed through the amplifier via an adjustable phase s... | 07/07/2009 |
| 7555272 | Transmission arrangement for transmitting data continuously in the time domain A transmission arrangement is provided for transmitting data continuously in the time domain. The arrangement includes at least one programmable amplifier in the baseband or in the radio frequency path in the signal processing chain for the signal which is to be tra... | 06/30/2009 |
| 7542741 | System and method for power mapping to compensate for power amplifier gain control variations A system for compensating gain control variations in a power amplifier comprises a power control element configured to receive a power control signal and an instantaneous envelope power reference signal, an adder configured to combine the power control signal and th... | 06/02/2009 |
| 7526260 | Apparatus, methods and articles of manufacture for linear signal modification Apparatus, method and article of manufacture are shown for linear signal modification. An input signal is modified by providing one or more non-linear current sources and regulating at least one of the one or more current sources to output a signal based on one or m... | 04/28/2009 |
| 7502601 | Power amplifier with digital power control and associated methods In a power amplifier, a serial bus interface is provided for sending and receiving information to other devices, such as a baseband controller. The power amplifier includes several control pins that can be used as a serial interface, or alternately, with a direct pi... | 03/10/2009 |
