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8160527 |
Automatic gain control in multi-carrier wireless systems
Methods and apparatus for providing automatic gain control (AGC) for received multi-carrier signals are disclosed. A receiver circuit comprises a common analog signal path, which includes an analog...
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8155612 |
Wireless device using a shared gain stage for simultaneous reception of multiple protocols
A wireless device that can process signals according to multiple wireless protocols simultaneously and without signal loss. The wireless device may comprise an antenna and first and second wireless...
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8149964 |
Symbol scaling with automatic gain control for wireless communication
Techniques for scaling symbols to account for large abrupt changes in received power at a user equipment (UE) are described. The UE performs AGC on received samples to obtain input samples. The UE...
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8145166 |
Enhanced programmable automatic level control
An enhanced programmable automatic level control loop comprising an input for receiving an input RF signal; a level modulator, wherein the level modulator receives the input RF signal and a control...
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8145169 |
Method and system for LNA adjustment to compensate for dynamic impedance matching
Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received...
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8131241 |
Linear voltage controlled variable attenuator with linear DB/V gain slope
A variable attenuator and method of attenuating a signal is presented. The variable attenuator contains an input that receives an input signal to be attenuated. A voltage divider between a resistor...
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8116712 |
Methods and apparatus for controlling a gain state of a wireless receiver operating in an idle mode
Techniques for controlling a gain state of a wireless receiver involve causing the wireless receiver to enter into a sleep mode; causing the wireless receiver to exit from the sleep mode and enter...
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8112053 |
Shared LNA and PA gain control in a wireless device
A wireless device includes at least one antenna, a plurality of shared signal path components coupled to the at least one antenna, the plurality of shared signal path components including a shared...
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8107907 |
Information processing apparatus, method, and program
Disclosed herein is an information processing apparatus including: judging means for judging whether a receiving device for receiving a signal amplified by an amplifying circuit which amplifies a...
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8103234 |
Automatic gain control using signal and interference power to obtain extended blocking performance
In a radio including analog and digital portions, with at least one A/D converter between the analog and digital portions, and the selectivity of the radio at least partly implemented in the...
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8077875 |
Audio device
An audio device includes a jack, a switch, an amplifier, an internal sound producer, and a determining circuit. The jack establishes a connection with an external sound producer. The switch is in...
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8068801 |
Electric wave receiving apparatus
An electric wave receiving apparatus comprises: an antenna; an amplifier; filter circuits that extract signals in different frequency bands from an output of the amplifier; detector circuits that...
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8055231 |
RF feedback engine coupled to receiver low noise amplifier
Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals...
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8055229 |
Low noise, highly linear amplifying stage and signal receiver using the same
The invention provides a signal amplifying stage, used in a signal receiver. The signal amplifying stage has: a fixed-gain low noise amplifier (LNA), amplifying an input signal; a variable-gain LNA...
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8055232 |
Radio frequency receiving apparatus, radio frequency receiving method, LSI for radio frequency signal and LSI for base band signal
A receiving apparatus may achieve optimal RF and IF gain control while suppressing saturated amplification due to interference. The receiving apparatus includes an RF variable gain Amp that...
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8000671 |
Dual threshold demodulation in an amplitude modulation radio receiver
A method, algorithm, circuits, and/or systems for demodulation in an amplitude modulated (AM) radio receiver are disclosed. In one embodiment, a radio receiver can include an amplifier configured...
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7983641 |
Cable communication apparatus and cable communication method
A STB 1 of this CATV system includes a diplexer 11, a signal level adjusting unit 30, a splitter 12, a tuner 2, a demodulating unit 3, a memory 17, and a CPU 19. The CPU 19 finds a correct...
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7945226 |
Method and circuit for adaptive automatic gain control
A method for adaptive automatic gain control and an automatic gain control circuit are provided. A predetermined waveform is injected into the automatic gain control circuit. A signal is sampled at...
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7945227 |
Apparatus and method for controlling voltage gain in ultra wideband receiving apparatus
Provided is an apparatus and method for controlling a voltage gain in an ultra wideband receiving apparatus. The apparatus includes a register for storing an Automatic Gain Control (AGC) value...
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7933361 |
Hybrid DC-offset reduction method and system for direct conversion receiver
A hybrid structure circuit for the cancellation of both Type-I and Type-II DC offsets. It comprises a static compensator in conjunction with a servo-loop feedback amplifier to suppress the...
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7933574 |
Method and system for LNA adjustment to compensate for dynamic impedance matching
Aspects of a method and system for LNA adjustment to compensate for dynamic impedance matching are provided. In this regard, an antenna matching network may be configured to maximize received...
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7933573 |
Signal processing apparatus and signal processing method, program, and recording medium
An IC chip allows first communication for performing communication with all of the other IC chips, and second communication for performing communication while restricting communication parties....
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7907589 |
Reception apparatus and reception method
A reception apparatus capable of preventing saturation and sensitivity degradation of a receiver when base transceiver station transmit power control is performed and calibrating offset voltage...
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7894561 |
Method and system for providing dynamic DC offset correction
A method for providing dynamic DC offset correction is provided. The method includes receiving a plurality of uncorrected samples. A determination is made regarding whether a specified number of...
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7890075 |
Mechanism for controlling amplifier gain in a radio receiver
A radio receiver such as a frequency modulation (FM) receiver, for example, includes a radio frequency (RF) amplifier having an adjustable gain output. The RF amplifier may be configured to receive...
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7885625 |
RF A/D converter with phased feedback to low noise amplifier
Methods and apparatus to perform radio frequency (RF) analog-to-digital conversion are described. According to one example, a receiver includes an amplifier to amplify received analog RF signals...
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7860473 |
Systems and methods for providing millimeter wave signal improvements
A radio frequency receiver includes a receiver circuit for processing RF signals, an antenna to receive millimeter wave RF signals, and an attenuator circuit, coupled between the receiver circuit...
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7853230 |
Methods and apparatus for controlling a gain state of a wireless receiver operating in an idle mode
The settling time of a wireless receiver is reduced by providing a previously utilized gain control state value to an amplifier of a receiver front end during a warm-up portion of a wake-up period...
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7844239 |
DC removal techniques for wireless networking
A wireless communication device (WCD) performs DC removal on a received signal using a coarse DC removal unit that removes relatively large DC components and a fine DC removal loop that removes...
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7831228 |
Processing received digital data signals based on a received digital data format
An integrated circuit radio receiver includes radio frequency (“RF”) front end circuitry for receiving and transmitting digital data received through a wireless interface. A baseband processor is ...
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7805121 |
Radio signal receiver and gain control method thereof
A radio signal receiver in which a RF-receiving unit 12 converts a radio received signal to a baseband signal, an AD-conversion unit 15a, 15b converts that baseband received signal to a digital...
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7787851 |
Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement
The invention specifies a circuit arrangement with a radio-frequency mixer (4) in which a plurality of preamplifiers (1, 2, 3) in a receiver have a common output node (6). This node is connected to...
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7778618 |
Systems and methods for reducing broadband image noise through a programmable bandwidth RF variable gain attenuator
Systems for suppressing image noise are provided. In this regard, one embodiment includes a system for suppressing image noise comprising a low noise amplifier (LNA) configured to amplify a...
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7778617 |
Three stage algorithm for automatic gain control in a receiver system
In an embodiment, a receiver for processing a RF input signal having a variable signal strength includes an RF amplifier, an IF amplifier, and a controller. The RF amplifier is configured to...
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7746966 |
Method for automatic gain control before initial synchronization in OFDM system and apparatus thereof
The present invention relates to a method for automatic gain control (AGC) before an initial synchronization of a mobile station modem in OFDM system, and an apparatus thereof. The AGC apparatus...
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7747234 |
Gain control in a multiple RF transceiver integrated circuit
A radio frequency (RF) transceiver integrated circuit (IC) includes a plurality of baseband Tx sections, a plurality of RF Tx sections, a plurality of RF Rx sections, and a plurality of baseband Rx...
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7697901 |
Digital variable gain mixer
A method includes controlling a mixer gain to provide a range of selected power output levels from the mixer using a first control scheme for a low portion of the range and using a second control...
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7653369 |
Combined discrete automatic gain control (AGC) and DC estimation
A wireless communications receiver includes a memory configured to store offset values corresponding to respective gain settings. A gain controller is configured to continuously select one of the...
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7639998 |
RF receiver utilizing dynamic power management
A radio frequency (RF) receiver utilizing dynamic power management for administration of power consumption. The RF receiver includes an RF antenna, an RF full band filter, an RF amplifier, an RF...
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7606544 |
System for dynamic control of automatic gain control take-over-point and method of operation
A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second...
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7593700 |
Controllable radio frequency stage with variable gain/attenuation, in particular incorporated into the transmission chain of a cellular mobile telephone, and corresponding control method
A radio frequency stage comprises an analog multiplier cell, and an analog current routing cell coupled thereto. The analog multiplier cell includes an input for receiving an input current having a...
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7590397 |
Signal processing apparatus and signal processing method, program, and recording medium
An IC chip allows first communication for performing communication with all of the other IC chips, and second communication for performing communication while restricting communication parties....
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7583943 |
Automatic gain control device
An automatic gain control device capable of reducing signal saturation or signal distortion caused by out-of-band signals of a filter or delay of a control signal. An AGC response control section...
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7565125 |
Telecommunications receiver with automatic gain control
A receiver 30 has an adjustable gain control circuit 32 that provides gain control base on the magnitude of the signal at the input of an analog-to-digital converter 22. The magnitude of a gain...
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7536159 |
Automatic gain control using signal and interference power to obtain extended blocking performance
In a radio including analog and digital portions, with at least one A/D Convener between the analog and digital portions, and the selectivity of the radio at least partly implemented in the digital...
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7522892 |
Power amplifier with serial interface 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...
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7496337 |
Method for controlling LNA gain state
The method for controlling a low noise amplifier (LNA) gain state which is applied to a receiver having the LNA is disclosed. The method includes the steps of: storing an LNA gain state of an idle...
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7496163 |
AGC system, AGC method, and receiver using the AGC system
In a slot format of a received signal, AGC gain update timings (t1 to t4) are shifted every time to disperse and reduce an influence of a noise attributable to a direct current component specific...
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7474882 |
System and method for RF gain control
The present invention provides a system and method for RF gain control that extracts the background noise information of the received RF signal in the short inter-frame space (SIFS), and computes...
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7474883 |
Radio communication received having automatic gain control based on measured and received energy
A receiver in a radio communication system and method for optimizing a use of an available dynamic range. The receiver has an automatic gain controller in an automatic gain control loop, a first...
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