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8823465 Clock generator for crystal or ceramic oscillator and filter system for same  
A clock generator is disclosed for use with an oscillator device. The clock generator may include a signal conditioning pre-filter and a comparator. The signal conditioner may have an input for a...
8760222 Method and apparatus for controlling or managing bandwidth of a filter circuit within a system having two integrated circuits  
A method and apparatus for an adjustable filter system comprises a first integrated circuit generating a reference value that represents a corner frequency of a filter within the first integrated...
8737535 Discrete digital receiver with FTBPF  
A receiver includes an antenna interface, a frequency translation bandpass filter (FTBPF), a sample and hold module, and a down conversion module. The antenna interface is operable to receive a...
8705675 Device and method for receiving RF signals based on heterodyne architecture using complex IF subsampling  
An RF signal reception device including: a transposition device of signals of frequency fRF to a first intermediate frequency IF1
8674753 Systems and methods for cancelling phase-locked loop supply noise  
One embodiment of an apparatus for cancelling supply noise includes an input circuit operable to receive an input from a charge pump and a drive circuit connected to an output of the input...
8385867 Tracking filter for a television tuner  
In one embodiment, a set of tracking filters to be coupled between an amplifier and a mixer is provided. The tracking filters may be differently configured depending on band of operation. For...
8373502 Gm-C filter tuning circuit based on relaxation oscillator  
A relaxation oscillator for generating a first and a second oscillation signals, comprising: a reference-voltage providing circuit for providing a high and a low reference voltages; switches for...
8005451 Filter circuit and radio communication apparatus  
There is provided with a filter circuit, including: an input terminal configured to input signals; a band stop filter configured to have a center frequency of input signals from the input terminal...
7785284 Joint for fluid transport lines for medical use  
The joint (36) comprises a tubular body (37) having two connecting zones (38, 39) each connected by an end to a tubular element (40) of a fluid transport line, giving continuity to passage of...
7764731 Equalizer and semiconductor device  
The present invention provides an equalizer and a semiconductor device, that can suppress a decrease in S/N ratio of a reception signal, can facilitate a disconnection test by a direct current...
7587010 Complex filter circuit and receiver circuit  
A pseudo-image signal producing section produces a pseudo-image signal imitating an actual image signal. An amplitude detection section detects the amplitude of the pseudo-image signal having...
7511570 Transconductance filtering circuit  
A transconductance filtering device with a flexible architecture that can selectively present a different topology and/or order beginning with the same initial structure is disclosed. For example,...
7429889 Control system for programmable filters  
Control system for programmable filters, master-slave calibration system and fully programmable high precision filter for use in such control system, such filters being provided with a filter...
7222056 Method for minimizing the error of a measurable quantity  
In the framework of the method for minimizing the error of a measured variable, particularly a signal to be measured using filtering at variable bandwidth, the bandwidth is regulated on the basis...
7053697 System for tuning a corner frequency of a low pass filter  
An integrated circuit formed on a semiconductor chip, comprising a low pass filter circuit having a first resistor of a first resistance value and a capacitor of a first capacitance value, wherein...
7002417 RC and SC filter compensation in a radio transceiver  
Disclosed is apparatus for operating with an RC filter (26, 26A), and a corresponding method. The apparatus includes circuitry (32) for use in measuring an actual value of at least one filter...
6894557 Method for tuning a corner frequency of a low pass filter  
An integrated circuit formed on a semiconductor chip, comprising a low pass filter circuit having a first resistor of a first resistance value and a capacitor of a first capacitance value, wherein...
6791400 Frequency-tuning loop used in the transconductor-capacitor filter  
A frequency-tuning loop of the invention used in the Transconductor-Capacitor filter is composed of: a first switching device and a second switching device, both having two signal-inputting ends...
6784728 Low noise switched low pass filter with benign transients  
A switched low pass filter (18) minimizes transients generated during filter switching events and eliminates active circuit random noise. The switched low pass filter (18) includes a filter input...
6741120 Low power active filter and method  
Devices and method for effectively filtering a signal, particularly for a communication system, are disclosed. In this regard, an exemplary embodiment of the present invention may be construed as...
6703816 Composite loop compensation for low drop-out regulator  
A composite loop compensation circuit and method for a low drop-out regulator configured to facilitate stable operation at very low output load currents is provided. An exemplary low drop-out...
6700360 Output stage compensation circuit  
An output stage compensation circuit and method for a low drop-out regulator configured to facilitate stable operation while providing output voltage and current to downstream circuit devices is...
6674320 System and method for orthogonal inductance variation  
A control system, method and apparatus is provided for an orthogonally variable inductor. A method and apparatus is also provided for voltage regulation. Regulation is provided without the use of...
6670846 Semiconductor integrated circuit including a filter with adjustable cut-off frequency  
A semiconductor integrated circuit includes a filter and a time-constant detecting circuit. The filter includes resistance elements; capacitance elements, each of which consists of a...
6642781 Selectable equalization system and method  
A system and method have been provided for selectably equalizing an input signal to an integrated circuit (IC), to compensate for degradation in the transmission process. The selectable...
6594613 Adjustable bandwidth filter for process variable transmitter  
A process variable transmitter providing a transmitter output representing a process variable sensed by a sensor. The transmitter has a filter with a bandwidth which is automatically adjusted...
6469574 Selectable equalization system and method  
A system and method have been provided for selectably equalizing an input signal to an integrated circuit (IC), to compensate for degradation in the transmission process. The selectable...
6448846 Controlled phase-canceling circuits/systems  
By taking advantage of the ability to control the phase relationship between a processor's output (or portions of a processor's output) and the phase of the pre-processed signal (in a particular...
6271778 High pass filtering with automatic phase equalization  
A system and method for selectively providing high pass filtering of two digital signals that are to be subsequently combined. Each of the first and second signals is passed through one of a high...
6133783 Phase jitter canceller  
A system and method for use in cancelling phase jitter in a Phase Locked Loop (PLL) circuit. A phase jitter canceller receives a phase error signal having phase jitter centered around a center...
6104235 Integrated circuit with trimmable passive components  
An integrated circuit having a passive circuit component that can be adjusted following the manufacturing process to provide a precise absolute value for resistance or capacitance. A plurality of...
5815033 Integrated circuit, variable filter adjusting method therefor, and electronic equipment using the same  
The present invention is to provide an integrated circuit capable of reducing the substrate area, a variable filter adjusting method for the integrated circuit, and an electronic equipment using...
5751184 Low electrical power consumption filter circuit  
A low electric power consumption filter circuit includes an amplifying portion including an odd number of serial MOS inverters. A grounded capacitance is connected between an output of the...
5719792 Isolator  
An information system comprises an information network and a station apparatus capable of receiving information from the network and sending a command to the network. An isolator comprises a first...
5703523 Filter circuit  
A filter circuit having a signal input terminal and a signal output terminal includes a first and a second buffer. The first buffer has an input end connected to a first resistor and to a first...
5694419 Shared resource modulator-demodulator circuits for use with vestigial sideband signals  
A common transceiver circuit for use as either a modulator or demodulator and that is implemented through a shared resource approach. This approach is particularly, though not exclusively, suited...
5673003 Amplifier circuit having a variable bandwidth  
An amplifier circuit (204) having a variable bandwidth comprises an amplifier (300), a capacitive element (304), a first npn transistor (302), and a switch control circuit (306). The first npn...
5642003 Power system switch incorporating a positive-sequence fundamental signal magnitude detector  
A power switching apparatus includes a positive-sequence fundamental signal magnitude detector. The positive-sequence fundamental signal magnitude detector derives a positive-sequence fundamental...
5469087 Control system using harmonic filters  
A harmonic filter for active or adaptive noise attenuation control systems for obtaining the complex amplitude of a single harmonic component from a signal which contains one or more harmonic...
5317217 Universal active filter  
A universal filter is provided with three inputs Vh, Vb and V1, with one output Vout, with two transconductance amplifiers Gm1, Gm2, with four capacitors mCO, (1-m)CO, CO and LCO and an amplifier...
5317216 Active filter circuit  
An active filter circuit includes a first and second differential pairs each having a pair of transistors. A capacitor is connected to a collector of one transistor from each of the first and...
4963773 Low pass/high pass filter phase shifter  
A compact low pass/high pass filter phase shifter including a semiconductor switch having a control electrode and first and second load electrodes; a first inductance connected in series with one...
4893035 Cascaded low pass/high pass filter phase shifter system  
A cascaded low pass/high pass filter phase shifter system including: a series of semiconductor switches each having a control electrode and first and second load electrodes; a capacitance...
4877979 Filter arrangement  
A fitter comprising a first (R1) and a second (R2) resistor arranged in series between an input terminal (5) for receiving an input voltage (vi) and the input (2) of an amplifier. The amplifier...
4857778 Programmable universal active filter  
The invention relates to a microprocessor-programmable, universal active filter. The filter has an input section, an operational amplifier with two input nodes, a bandpass section, a lowpass...
4847523 Lock-in test amplifier  
A lock-in amplifier having an input terminal (E); a pair of signal procesg channels (16, 18) each having an input; and an output (20, 22); a pair of switching devices (S1, S2) coupled between the...
4739189 Rapid slewing filter  
A multiplexer samples multiple analog waveform signals to provide a sequence of input signals to an active low-pass filter. The bandwidth of the filter is determined by an input RC network having...
4659995 Active fourth-degree filter element  
An active filter element of the fourth degree, to be connected in series with other such elements in forming a band-pass or band-stop filter of adjustable bandwidth, is a four-terminal network...
4540946 Variable characteristic filters  
A variable characteristic filter is described in which output signals are frequency analyzed by means of a frequency-to-voltage converter to derive a control signal. Variable impedance elements in...
4516078 Variable frequency passband circuit  
A variable frequency passband circuit comprising two passband filters and three mixers (front, intermediate and output mixers) connected in a cascade fashion disposed in a signal path. Two VCOs...

Matches 1 - 50 out of 63 1 2 >