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| Number | Title | Issue Date |
| 8120427 | Circuit arrangement and method for power regulation and amplifier arrangement A circuit arrangement and method for power regulation and an amplifier arrangement for power regulation are described. ... | 02/21/2012 |
| 8115551 | Amplifying device and its control method An amplifying device comprises a first amplifying unit (91-97) capable of changing its gain in a stepwise manner, a second amplifying unit 99 cascade-connected to the first amplifying unit (91-97), the second amplifying unit being ... | 02/14/2012 |
| 8102212 | Signaling system with low-power automatic gain control An integrated circuit receiver includes a first channel comprising an amplifier responsive to a first gain control value in a first mode to receive an input signal and generate a first amplified signal having a transition rate. Detection circuitry in the first chann... | 01/24/2012 |
| 8063704 | Gain adjustment device and method thereof A gain adjustment device and a method thereof are provided. The device includes a first processing module, a gain adjustment circuit, a second processing module, and a gain control module. The first processing module receives an input signal and generates a first si... | 11/22/2011 |
| 7982539 | High resolution variable gain control A gain circuit includes an analog section with variable gain and a digital section with variable gain. The gain steps for the digital section have a higher resolution than the gain steps for the analog section. In some implementations, gain steps can be achieved muc... | 07/19/2011 |
| 7982540 | Integrated circuit arrangement for generating a digital variable gain control signal The invention proposes an integrated circuit arrangement (10) for generating a digital variable gain control signal (SA) for a digitally variable gain amplifier (14), comprising: a memory (16) for storing at least one digital signal sequence (DS... | 07/19/2011 |
| 7982541 | AGC circuit A count control signal generating section for generating a count control signal on the basis of an output signal of a variable gain amplifier; an up/down counter for performing an up-count operation or a down-count operation on the basis of the count control signal;... | 07/19/2011 |
| 7965142 | Gain control circuit and its gain control method A gain control circuit and its gain control method, said gain control method comprising the following steps: firstly, outputting continuously a counter value; next, generating a ramp wave signal based on said counter value, and at a voltage where a control voltage s... | 06/21/2011 |
| 7893768 | Automatic gain control A method and system for providing automatic gain control for a differential amplifier are provided. An impedance network is set to have a first impedance that corresponds to a first gain for a differential amplifier, which amplifies an input signal by the first gain... | 02/22/2011 |
| 7816990 | Variable gain amplification circuit A variable gain amplification circuit comprises a signal generator that has an output terminal and is able to vary an output amplitude; a variable capacitor connected between the output terminal and an AC grounded terminal; and a control circuit for controlling the ... | 10/19/2010 |
| 7816991 | Signal splitter A controllable-gain circuit (TI, Rt, TS1, . . . , TS4) provides a first and a second pair of complementary gain-controlled signals (Ip1, Ip3; Ip2, Ip4) in response to an input signal (RFI). In each pair, one gain-controlled ... | 10/19/2010 |
| 7812672 | Low noise amplifier having improved linearity Embodiments of the present general inventive concept include a low noise amplifier and method with an improved linearity while reducing a noise disadvantage (e.g., increase). One embodiment of a low noise amplifier can include a first transistor to receive an input ... | 10/12/2010 |
| 7812673 | Amplifier having input/output cells with discrete gain steps An amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that may be selected to provide discrete gain settings. A loop amplifier is... | 10/12/2010 |
| 7782138 | Signaling system with low-power automatic gain control An integrated circuit device includes a variable-gain amplifier, memory circuit and gain control update circuit. The variable-gain amplifier generates an amplified signal having an amplitude according to a gain control value that is stored, at least during a first i... | 08/24/2010 |
| 7733184 | Circuit arrangement and method for power regulation and amplifier arrangement A circuit arrangement and method for power regulation and an amplifier arrangement for power regulation are described. ... | 06/08/2010 |
| 7724090 | Loop control apparatus and method thereof An electrical device and a loop control method are provided. A data signal is obtained from a front end. A variable gain amplifier amplifies the data signal based on a gain value. An analog to digital converter samples the amplified data signal output therefrom to g... | 05/25/2010 |
| 7646245 | Amplifier An amplifier includes: a single-stage or multiple-stage variable gain amplifier that amplifies an input signal with a controlled gain; a AGC control circuit that detects the peak level of a signal outputted from the variable gain amplifier in the final stage, conver... | 01/12/2010 |
| 7595692 | Automatic gain control circuit An automatic gain control circuit for controlling the gain of a variable gain amplifier block includes a count control signal generating block, an up-down counter, a gain control signal generating block, and a downcount clock signal generating block. The up-down cou... | 09/29/2009 |
| 7573335 | Automatic gain control (AGC) with lock detection A method, algorithm, circuits, and/or systems for automatic gain control (AGC) are disclosed. In one embodiment, an AGC circuit can include a comparator configured to compare an output of an amplifier against a reference voltage, gain logic configured to decrease a ... | 08/11/2009 |
| 7515000 | Active bias circuit for low-noise amplifiers A low-noise amplifier comprises a first amplification circuit that includes a control terminal and a first terminal. An impedance load communicates with the first terminal. A feedback circuit outputs an output current to the first terminal and that generates a bias ... | 04/07/2009 |
| 7504884 | Automatic gain control apparatus of cable modem, and lock-time acquisition method using the same Provided is an automatic gain control (AGC) apparatus of a cable modem. The apparatus includes: a gain controller for measuring a power level of digital input signals transmitted from outside, accumulating the measured values of the digital input signals for a prede... | 03/17/2009 |
| 7501895 | Channel state aided automatic gain control An apparatus comprises a circuit for producing a channel gain control signal, and an amplifier for amplifying a signal of interest in response to the channel gain control signal, wherein the channel gain control signal is generated from a channel state signal that i... | 03/10/2009 |
| 7498882 | Signaling system with low-power automatic gain control An integrated circuit device includes a variable-gain amplifier, memory circuit and gain control update circuit. The variable-gain amplifier generates an amplified signal having an amplitude according to a gain control value that is stored, at least during a first i... | 03/03/2009 |
| 7495513 | Signaling system with low-power automatic gain control An integrated circuit device includes a variable-gain amplifier, memory circuit and gain control update circuit. The variable-gain amplifier generates an amplified signal having an amplitude according to a gain control value that is stored, at least during a first i... | 02/24/2009 |
| 7456690 | Automatic gain control using multi-comparators A method and apparatus for an automatic gain control (AGC) loop that utilizes multiple comparators to provide constant bandwidth tracking and step response, as well as fine granularity for decision directed convergence. In one embodiment, an odd number of comparator... | 11/25/2008 |
| 7443242 | AGC circuit An AGC circuit includes: a variable gain amplifier circuit having a gain controlled with a gain control signal; a rectifier circuit for rectifying an output signal of the variable gain amplifier circuit; a voltage comparator for comparing a rectified signal with a t... | 10/28/2008 |
| 7443435 | Column amplifier with automatic gain selection for CMOS image sensors A column amplifier architecture having automatic gain selection for CMOS image sensors, which reduces the effect of analog noise, while maintaining a system's dynamic range. A comparator compares an amplified column buffer output signal to a reference voltage. The o... | 10/28/2008 |
| 7439807 | Method and system for generating a temperature-compensated control signal A method for generating a temperature-compensated control signal is provided. The method includes receiving a constant control signal. A temperature-compensated control signal is generated based on the constant control signal. The temperature-compensated control sig... | 10/21/2008 |
| 7411456 | AGC circuit An AGC circuit includes: a variable gain amplifier circuit having a gain controlled with a gain control signal; a rectifier circuit for rectifying an output signal of the variable gain amplifier circuit; a voltage comparator for comparing a rectified signal with a t... | 08/12/2008 |
| 7385449 | Automatic gain control with three states of operation A method and apparatus for an automatic gain control circuit (AGC) that utilizes freezing and unfreezing states. A freezing process moves the AGC into a TRANSITION state from a NORMAL state, based on net change of VGA gain control codes over a monitoring time window... | 06/10/2008 |
| 7379511 | Method for reducing DC offset error for single ended and differential signals A feedback signal generated as a function of a peak amplitude detected in an input signal provides bias to reduce DC offset. A peak in the input signal is compared with a selected signal level to align an output signal relative to a reference signal level. The outpu... | 05/27/2008 |
| 7369781 | Burst mode optical receiver considering characteristic of extinction ratio of received optical signal Provided is a burst mode optical receiver considering a characteristic of an extinction ratio of a received optical signal is provided. By using a peak detector considering a characteristic of an extinction ratio, top and bottom peak voltages of actual burst packets... | 05/06/2008 |
| 7368995 | Power amplifier with active bias circuit A power amplifier with an active bias circuit and operating method thereof are provided. The power amplifier comprises a power amplifier transistor and an active bias circuit. The active circuit receives input power and applies a bias voltage to the gate of the powe... | 05/06/2008 |
| 7368990 | Differential amplifier and data driver employing the differential amplifier Disclosed is a differential amplifier which includes first and second input terminals, an output terminal, first and second differential pairs, and first and second current sources for supplying currents to the first and second differential pairs. The first differen... | 05/06/2008 |
| 7369591 | System for controlling peaking for a driver for a vertical-cavity surface-emitting laser A driver for a vertical-cavity surface emitting laser (VCSEL) is provided that includes a bias current source, a modulation source, and a peaking control circuit. The bias current source is operable to generate a bias current for the VCSEL and an output voltage. The... | 05/06/2008 |
| 7369625 | Apparatus and method for slicing RF signal and compensating for the slice level of RF signal in disk drive An apparatus and method for slicing an RF signal and compensating for the slice level of an RF signal reproduced from a disk, which minimizes a block error rate by optimizing the slice level of the RF signal according to variations in symmetry of the RF signal when ... | 05/06/2008 |
| 7369816 | Highly accurate temperature sensor employing mixed-signal components A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry ... | 05/06/2008 |
| 7366482 | Transmission device, transmission output control method, and radio communications device Either linear operating mode or saturation operating mode is set as the operating mode of a high-frequency power amplifier on the basis of an operating mode set signal. The gain of a variable gain amplifier provided in front of the high-frequency power amplifier and... | 04/29/2008 |
| 7366489 | Mobile communication apparatus A transceiver suitable for larger scale of integration employs direct conversion reception for reducing the number of filters. Also, the number of VCOs is reduced by utilizing dividers to supply a receiver and a transmitter with locally oscillated signals at an RF b... | 04/29/2008 |
| 7363015 | Wide-frequency-range television tuner A television tuner includes a tuning circuit having two first varactor diodes for changing a tuning frequency, a mixer for converting a television signal to an intermediate frequency signal, an oscillator having a second varactor diode, and a PLL circuit for outputt... | 04/22/2008 |
