Matches 1 - 50 out of 120 1 2 3 >


Match Document Document Title
US20130016797 METHOD AND APPARATUS FOR UPDATING SYMBOL RECOVERY PARAMETERS AND CORRECTING SYMBOL TIMING MISALIGNMENT  
A radio receiver (100) includes a symbol recovery unit (108) the produces a raw symbol stream (112) and a recovered symbol stream (116). The recovered symbol stream is produced by applying symbol...
US20120183099 DYNAMIC DC-OFFSET DETERMINATION FOR PROXIMITY SENSING  
The subject matter disclosed herein relates to dynamically determining DC-offset used for proximity sensing of a mobile device
US20130294545 METHOD AND APPARATUS FOR ELIMINATING DIRECT CURRENT OFFSET  
The present invention provides a method and an apparatus for eliminating direct current offset. The method comprises the steps of: calculating Euclidean distances between every two demodulation...
US20150085957 Method Of Calibrating a Slicer In a Receiver Or the Like  
A method of calibrating data slicer-latches in a receiver to remove offset errors in the slicer-latches. A known voltage is applied to all but one of the inputs of the slicer-latch. The remaining...
US20110286495 Automatic Gain Control and DC Offset Compensation  
A signal receiver having a gain control circuit comprising: detection means configured to form a representation of the excess amplitude during a training period of a signal received by the...
US20110286553 DC OFFSET CALIBRATION  
A mobile communication device comprises a plurality of receivers, a phase detection circuit, and a DC offset calibration circuit. Each receiver comprises a receiver chain and a divide-by-2 circuit...
US20140334574 ADAPTIVE BLUETOOTH RECEIVER AND METHOD  
A Bluetooth receiver comprises a RF front end configured to receive a Bluetooth signal including a preamble and 34-bit pseudo-number (PN); a DC estimator communicatively coupled to the RF front...
US20070071131 Switched phase receiver for a long range RFID system  
A conversion receiver in a radio frequency identification system includes a phase shifting circuit that shifts the phase of a received signal. A switching circuit is coupled to the phase shifting...
US20140105331 DC OFFSET CANCELLATION IN DIRECT CONVERSION RECEIVERS  
A method includes receiving a signal using a direct conversion receiver, while the receiver is set at a gain that is selected from a range of possible gain values. Multiple DC offset correction...
US20110188612 DC OFFSET CANCELLATION IN DIRECT CONVERSION RECEIVERS  
A method includes receiving a signal using a direct conversion receiver, while the receiver is set at a gain that is selected from a range of possible gain values. Multiple DC offset correction...
US20130294546 DOUBLE-SAMPLING RECEIVER WITH DYNAMIC OFFSET MODULATION FOR OPTICAL AND ELECTRICAL SIGNALING  
A receiver architecture is disclosed which employs an RC double-sampling front-end and dynamic offset modulation technique. A low-voltage double-sampling technique provides high power efficiency...
US20110176641 D.C. Offset Estimation  
A combination of a phase shifter, a measurement receiver, and an offset estimator enable the d.c. offset in the transmit path of a quadrature transmitter to be distinguished from the d.c. offset...
US20100172442 ACCESS CODE DETECTION AND DC OFFSET-INTERFERENCE CORRECTION  
A method for detecting an access code in a receiver that does not require an explicit DC-offset interference correction block, comprising: a) projecting a received signal R onto a subspace...
US20060251188 Common-mode suppression circuit for emission reduction  
In a network device, an interface is coupled between an Ethernet physical layer (PHY) module and a network connector, and comprises at least one pair of pins coupled to output connections of the...
US20080008267 Analog front end device with temperature compensation  
An analog front end device with temperature compensation is provided. The analog front end device comprises a bandgap voltage reference circuit, a clock generator, a temperature compensation...
US20080107209 Slicer circuit capable of judging input signal correctly  
A slicer circuit is disclosed. The slicer circuit has the feature that a counting-circuit is employed to count the number of continuous times of signals in a same level continuous outputted from...
US20080292023 DIRECT SAMPLING TYPE WIRELESS RECEIVER AND METHOD USING THE SAME  
There are provided a direct sampling type wireless receiver and a method using the same that reduce nonlinearity and DC offset by using a multi-port network and a carrier frequency direct...
US20110064165 DEMODULATION APPARATUS AND METHOD FOR RFID READER IN PASSIVE RFID ENVIRONMENT  
A demodulation apparatus for a Radio Frequency Identification (RFID) reader includes: a direct current (DC) offset cancellation unit for cancelling DC-offset noise contained in a PSK-modulated or...
US20090022245 Low latency analog QAM coherent demodulation algorithm  
A digital demodulation method for a quadrature amplitude modulated signal uses a phase locked loop to generate a local carrier signal. The phase locked loop uses a feedback signal derived from one...
US20130223569 WIRELESS RECEIVER  
A direct-conversion type wireless receiver includes a pair of mixers for frequency-converting a radio signal received from an antenna into a base band signal by local signals having different...
US20100080324 DEVICE AND METHOD FOR DC OFFSET CANCELLATION  
A device and method for DC offset cancellation device are disclosed. The method includes keeping a high pass module at off state, converting an analog radio frequency signal to a digital baseband...
US20100329390 ADAPTIVE OFFSET-COMPENSATING DECISION-FEEDBACK RECEIVER  
A circuit that receives input signals from a transmitter via proximity communication, such as capacitively coupled proximity communication, is described. Because proximity communication may block...
US20150016571 Blind Mechanism for Estimation and Correction of I/Q Impairments  
A mechanism for blind estimation of parameters for correcting I/Q impairments. Complex samples of a complex baseband signal are received from a receiver. A cross-correlation is computed between an...
US20060245521 DC stabilization circuit for organic electroluminescent display device and power supply using the same  
A DC stabilization circuit for an organic electroluminescent display device and a power supply using the same are provided. The DC stabilization circuit includes a self-bias part connected between...
US20050148300 Signal generation power management control system for portable communications device and method of using same  
A signal generation power management control system (100) for use in a portable communications device includes a digital signal processor (DSP) (101) for processing a digital source input and...
US20110293043 DC OFFSET CORRECTION TECHNIQUES  
Techniques are disclosed that involve the reduction of DC offsets. For instance, embodiments may receive a baseband signal, and determine a DC characteristic of the baseband signal. When the DC...
US20080212716 BURST MODE RECEIVER FOR PASSIVE OPTICAL NETWORK  
A receiver assembly for use in an optical telecommunications network is provided that automatically generates a reference level for the incoming signal burst based on its preamble without the need...
US20130148761 METHOD FOR CORRECTING IMBALANCE ERRORS IN A DIRECT CONVERSION RECEIVER  
A communication system comprises a direct conversion receiver for correcting imbalance errors. The direct conversion receiver receives a radio frequency (RF) signal and converts the RF signal to...
US20070297536 DC OFFSET REMOVAL APPARATUS AND DC OFFSET REMOVAL METHOD  
A DC offset removal apparatus and a DC offset removal method that can highly accurately detect and remove a DC offset within a burst and that have a relatively small processing load. DC offset...
US20110122975 ELECTRONIC TUNER AND HIGH FREQUENCY RECEIVING DEVICE USING THE SAME  
Demodulator includes reception quality evaluation circuit for evaluating the quality of a received signal by comparison with a first reference value, and outputting an evaluation signal; and...
US20080192862 Dc Offset Estimation in Received Signals  
A scheme for deducing a DC offset in a received signal burst acquired through a particular channel, wherein the received signal burst corresponds to a transmitted signal burst. An impulse response...
US20080232512 METHOD AND SYSTEM FOR BLOCKER AND/OR LEAKAGE SIGNAL REJECTION BY DC BIAS CANCELLATION  
Methods and systems for blocker and/or leakage signal rejection by DC bias cancellation are disclosed and may include undersampling a received signal including a desired signal and an undesired...
US20080298481 IC with mixed mode RF-to-baseband interface  
An integrated circuit (IC) includes at least one baseband section, at least one radio frequency (RF) section, and an interface module. The interface module is operable to couple the at least one...
US20090147885 MAJORITY DETECTOR APPARATUS, SYSTEMS, AND METHODS  
Apparatus, methods, and systems are disclosed, including, for example, a data receiver to receive a calibration voltage and a reference voltage to calibrate the data receiver. The output of the...
US20110103518 DC OFFSET SUPPRESSION CIRCUIT FOR A COMPLEX FILTER  
The present invention relates to a direct current (DC) offset suppression circuit to suppress DC offsets occurring when a communication circuit where a complex filter is adopted performs...
US20100040174 METHOD AND ARRANGEMENT FOR ESTIMATING DC OFFSET  
A method and arrangement for estimating a DC offset for a signal received in a radio receiver. The received signal includes a digitally modulated signal component, a DC offset component, and a...
US20080112476 Data receiving device  
A data receiving device, for receiving digital data via a differential signal transmission path made up of two or more channels including one channel of a reference clock, includes a digital data...
US20070230622 UWB radio interface with DC offset  
The present invention provides a method and apparatus for correcting direct current (DC) offsets in radio output signals. The invention comprises a radio processor and a baseband processor. During...
US20090185639 DC OFFSET CORRECTION CIRCUIT FOR CANCELING A DC OFFSET IN REAL TIME AND A RECEIVING SYSTEM HAVING THE SAME  
A DC offset correction circuit includes a DC offset detector generating a detection voltage based on a result of a comparison of a first reference voltage and a voltage difference between signals...
US20140119418 Receiver with Enhanced DC Compensation  
The disclosure relates to a receiver system that employs multiple instances of a DC compensation system to reduce DC offsets in a receiver path. The receiver has a receiver front end configured to...
US20080317170 Embedding a Secondary Information Signal in a Channel Data Stream  
The present invention relates to a method and a corresponding device for embedding a secondary information signal in a channel data stream of encoded primary information signal. In order to make...
US20080130607 Method and System for Multimode DC Offset Compensation  
Aspects of a method and system for multimode DC offset compensation are presented. Aspects of the system may include accumulating a selected number of signal samples, determining an average of the...
US20070171999 Carrier phase ambiguity correction via dc offset  
A receiver comprises a carrier tracking loop (CTL), a filter, a look-up table and a rotator The CTL provides a base-band signal having in-phase and quadrature signal components. The filter...
US20090042531 SIGNAL RECEIVER CIRCUIT  
A signal receiver circuit including a transmission gate, a pull-low unit, a boost capacitor, a voltage division unit, and a receiver unit is provided. The transmission gate determines whether to...
US20090323864 SINGLE ENDED MULTIBAND FEEDBACK LINEARIZED RF AMPLIFIER AND MIXER WITH DC-OFFSET AND IM2 SUPPRESSION FEEDBACK LOOP  
A receiver arrangement includes a single ended multiband feedback amplifier, at least one single ended input, differential output mixer arrangement including a main mixer and a trim mixer, and a...
US20090041161 DC offset estimation system and method  
A DC offset estimation system is disclosed. A DC offset estimation system includes a carrier frequency offset estimator receiving an input signal and estimating a carrier frequency offset value, a...
US20120057656 METHOD AND APPARATUS FOR PASSIVE RADIO FREQUENCY INDENTIFICATION (RFID) READER DIGITAL DEMODULATION FOR MANCHESTER SUBCARRIER SIGNAL  
An apparatus and method for passive radio frequency identification (RFID) reader digital demodulation with respect to a Manchester subcarrier signal are disclosed. In a passive RFID environment...
US20100215125 COMMUNICATIONS DEVICE WITH IN-PHASE/QUADRATURE (I/Q) DC OFFSET, GAIN AND PHASE IMBALANCE COMPENSATION AND RELATED METHOD  
A DC offset estimator and removal circuit removes the DC offsets for each of the I and Q signal components in a received signal. A gain imbalance estimator and compensator circuit estimates and...
US20100046672 System for and Method of Detecting Interference in a Communication System  
A system for and method of detecting interference in a communication system. In an embodiment, a receiver acquires a communication signal, the communication signal comprising a carrier signal and...
US20080165899 RADIO FREQUENCY RECEIVER HAVING DYNAMIC BANDWIDTH CONTROL AND METHOD OF OPERATION  
A radio frequency receiver (102) includes at least one amplifier (108, 114 and 122) for amplifying a signal received by the radio frequency receiver, an automatic gain control system (158) for...

Matches 1 - 50 out of 120 1 2 3 >