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7593484 |
Radio frequency (RF) receiver with double loop integrated fast response automatic gain control (AGC)
A radio frequency (RF) receiver device comprises a receiver system that receives an analog radio frequency signal and downconverts the analog radio frequency signal to a downconverted analog...
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7567628 |
Symmetric differential slicer
A self-biasing slicer includes a self-biased differential transistor pair. As a result of the self-biasing, the slicer may receive input signals without the use of AC coupling. That is, a...
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7526256 |
Transformer-based multi-band RF front-end architecture
An apparatus and method for allowing two different signal paths to be coupled to a multi-tap transformer balun. The multi-tap transformer has a first port, which is coupled to a single antenna, and...
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7505532 |
Signal transmission system using PRD method, receiver circuit for use in the signal transmission system, and semiconductor memory device to which the signal transmission system is applied
A signal transmission system is constructed to transmit data over a signal transmission line without requiring precharging the signal transmission line for every bit, by eliminating the intersymbol...
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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 (t 1 to t 4 ) are shifted every time to disperse and reduce an influence of a noise attributable to a direct current component...
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7496149 |
Methods and apparatus for signaling on a differential link
Methods and apparatus are disclosed for transitioning a receiver from a first state to a second state using an in-band signal over a differential serial data link.
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7489741 |
System and method to perform DC compensation on a radio frequency burst in a cellular wireless network
A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first...
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7477704 |
Digital signal detection for high speed signaling systems
Methods and apparatuses for detecting digital signals in high speed signaling systems. In at least one embodiment, at least one received input signal is combined with a plurality of predetermined...
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7460792 |
Receiving circuit and electronic apparatus for optical communication
In an optical communication-use receiving circuit of the present invention, the pulse width of the received pulse which is a binary signal corresponding to the signal optical pulse is specified by...
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7421250 |
Radio frequency integrated circuit
A radio frequency (RF) integrated circuit (IC) includes a local oscillation module, analog radio receiver, analog radio transmitter, digital receiver module, digital transmitter module, and digital...
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7408994 |
AC coupling system for wide band digital data with dynamic AC load
An interface system couples a fixed impedance device to a receiver for transmitting data signals at different data rates at different times. The interface system includes elements that are...
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7394872 |
Data receiver and method for receiving data using folded differential voltage sampler
A data receiver that is capable of precisely detecting data at high speed even at a high frequency after receiving differential reference signals and data in synchronization with a clock signal,...
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7391825 |
Comparator circuit having reduced pulse width distortion
A comparator circuit having reduced pulse width distortion includes a differential amplifier operative to receive at least first and second signals and to amplify a difference between the first and...
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7386032 |
Receiver processing systems
Spread spectrum receiver architectures and methods are described for reducing interference, particularly the interference observed at a user-end terminal in a W-CDMA 3G mobile communications...
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7376205 |
Device and method for compensation of transmission line distortion
A system, device, and method for compensation of distortion caused by transmission line effects are disclosed herein. An output port including a feed-forward circuit parallel to the output...
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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...
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7349465 |
Line interface system
A transceiver system is disclosed for use in a telecommunication system. The transceiver system includes a transmission circuit with a differential transmitter input coupled via a transmitter input...
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7340186 |
Discrimination phase margin monitor circuit, transmitting/receiving device and communication system
The discrimination phase margin monitor circuit ( 10 ) of the present invention comprises a first discrimination circuit ( 11 and 12 ) discriminating an input data signal using a clock signal...
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7313187 |
High-speed serial linking device with de-emphasis function and the method thereof
A high-speed serial linking device with de-emphasis function for receiving a parallel data and accordingly outputting a de-emphasized transmission differential pair. The high-speed serial linking...
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7283596 |
PAM-4 data slicer having symmetrical offset
A PAM-4 data slicer includes first, second, and third comparators which provide first, second, and third thresholds, respectively. Each of the comparators has an offset. The first and third...
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7263083 |
Radio communication device and arrival direction estimation method
A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without...
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7254194 |
Automatic gain control for communication receivers
A communication receiver amplifies a pulse-amplitude-modulated (PAM) signal representing an integer-valued sequence of first data elements (D 1 ) with an adjustable first gain (G 1 ) and digitizes...
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7254169 |
Method and apparatus for determining a loss of signal condition
A loss-of-signal (LOS) condition is detected by sampling input data for a predetermined time period, comparing a magnitude of the sampled input data to a threshold signal strength level, and...
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7212749 |
Signal receiver having wide band amplification capability
An Improved Signal Receiver Having Wide Band Amplification Capability is disclosed. Also disclosed is a receiver that is able to receive and reliably amplify infrared and/or other wireless signals...
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7103114 |
Modulated radio signal transmitter with self-adapted amplification polarization
The invention relates to a transmitter of radio signals (SMS), which are amplitude-modulated according to a discrete plurality of amplitude levels, in which at least one output power transistor ( 6...
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7099395 |
Reducing coupled noise in pseudo-differential signaling systems
A pseudo-differential signaling system uses a plurality of signal lines and a single, common reference voltage. Signal line voltages are interpreted only in comparison to the reference line...
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7099266 |
Orthogonal frequency division multiplexed signal transmitting apparatus, orthogonal frequency division multiplexed signal receiving apparatus, and orthogonal frequency division multiplexed signal transmitting/receiving system
An orthogonal frequency division multiplexed signal transmitting apparatus executes a time-division multiplexing process that inserts a reference signal at a predetermined interval based on...
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7091849 |
Inbound interference reduction in a broadband powerline system
Disclosed is a method and apparatus for reducing inbound interference in a broadband powerline communication system. Data modulated on first and second carrier frequencies is received via...
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7062248 |
Direct conversion receiver having a low pass pole implemented with an active low pass filter
A wireless communications mobile station ( 10 ) includes at least one antenna ( 240 ) and a RF transceiver ( 210,220 ) containing a direct conversion receiver ( 1 ) coupled to the antenna. The...
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7061995 |
Apparatus and method to generate an adaptive slicer threshold for binary data
An adaptive slicer threshold generation system includes a first moving average filter to determine a first average value of a first binary signal. A second moving average filter is included to...
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7035349 |
Signal compensation circuit and demodulating circuit with high-speed and low-speed feedback loops
A signal compensation circuit compensates for direct-current offset of an input signal by amplifying the input signal with an amplifier having a variable direct-current offset. A low-speed negative...
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7016433 |
Method and system for compensating for phase variations intermittently introduced into communication signals by enabling or disabling an amplifier
A communication system including an amplifier, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The amplifier receives a communication signal....
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6956905 |
Peak detector circuit
A balanced peak detector circuit adjusts differential voltage signals. In one embodiment, the peak detector uses competing current paths to provide a charging current to a storage capacitor. The...
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6915076 |
System and method for adaptively selecting a signal threshold of an optical link
An apparatus and method for detecting a signal in an optical data network is disclosed. A peak power level and an average power level are measured for an optical input to an optical detector. A...
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6836127 |
Dual switching reference voltages
Two reference voltages and two differential receivers are used to detect low-to-high and high-to-low transitions on an input signal and set a received signal output. One reference voltage is set...
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6819722 |
Offset control circuit, optical receiver using the same and optical communication system
An offset control circuit can obtain an output waveform free of fluctuation of duty ratio by canceling offset transitionally varying according to elapsed time even upon reception of an optical...
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6809596 |
DC offset cancellation circuit, system and method
Described are a circuit and system to provide an output signal in response to composite input signal comprising an AC signal component and a DC signal component. An amplifier provides an amplified...
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6771750 |
Physical layer transceiver architecture for a home network station connected to a telephone line medium
A physical layer transceiver of a home network station connected to a telephone medium has an architecture enabling adaptation of detection circuitry based on received network signals to enable...
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6768876 |
Method and apparatus for tracking an optical communications system
A tracking system and method in an optical communications system utilizing an optical communications beam. In one embodiment, the disclosed optical communications system includes a communications...
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6754288 |
Line receiver with improved dynamic range
A receiver which may be an xDSL receiver has improved dynamic range. The receiver has a first amplifier, a network of four impedances and a variable gain second amplifier. The variable gain second...
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6744826 |
AGC window detector
An AGC window detector that senses the sum of an in-phase (I) and a quadrature (Q) peak-to-peak signal swing and compares the signal to a reference voltage for producing a desired gain. The primary...
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6694105 |
Burst mode receiving apparatus having an offset compensating function and a data recovery method thereof
A burst mode receiving apparatus having an offset compensating function and a data recovery method thereof, including an intermediate value detector to detect and output an intermediate value of an...
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6625232 |
Smart DC offset correction loop
A DC offset correction method and apparatus. In a differential system, a DC offset correction loop includes a gain stage ( 104 ) having a differential input, a gain G and a differential output. A...
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6608710 |
Automatic gain control circuit and optical receiver
An automatic gain control circuit for an optical receiver couples the low level signal produced by an optical detector to a signal amplifier, preferably a double-ended differential amplifier with...
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6532391 |
Automatic gain control device and method for base band signaling in communications
A network receiver is configured for receiving a base band carrier signal from another network transceiver via a network medium. A variable gain amplifier generates an amplified base band signal....
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6529564 |
Data pulse receiver
A data pulse receiver includes a data regenerator and a peak detector, both having set-reset flip-flops (RS-FFs) to generate hysteresis which is varied based on its tail current provided to the...
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6476954 |
Optical communication device and receiving circuit thereof
An optical communication device includes a receiving circuit that generates an accurate voltage signal from received light. The voltage signal is then used to quickly and accurately determine...
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6337887 |
Burst receiving circuit and control method thereof
A burst receiving circuit and a control method thereof whose unstable state of an output is able to be avoided without bringing about the decrease of the receiving level sensitivity and the...
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6335641 |
Automatic input threshold selector
An automatic input threshold selector includes a maximum value level decision circuit, and an input threshold setting circuit. The maximum value level decision circuit decides, among m+1 level...
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6275541 |
Digital receiver circuit
A digital receiver circuit is easily integrated into a single chip. A differential output amplifier circuit is used for performing a binarizing decision by a quantizer for a differential output. A...
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