Matches 151 - 200 out of 507 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
5298813 Polar leapfrog filter  
A polar leapfrog filter includes at least one polar network. The polar network comprises a differentiator constituted by an operational amplifier having input and output terminals, and a first...
5264805 Amplifier for limiter  
A limiter amplifier includes amplifiers connected in cascade each having differential outputs and differential inputs, and a lowpass filter connected between adjacent amplifiers. The filter...
5258716 All-pass filter  
An all-pass filter includes an adder which comprises a variable conductance amplifier and a capacitor connected to the output terminal thereof. The adder is being arranged to add the output of a...
5237288 RF power amplifier linearization  
An apparatus for generating an amplified signal from an input signal. The apparatus comprises: (a) a phase-shifting circuit for shifting the phase of a feedback signal derived from the amplified...
5222246 Parallel amplifiers with combining phase controlled from combiner difference port  
A power amplifier arrangement includes a power divider for dividing the signal to be amplified into equal-amplitude components. Each component is amplified by a signal amplifying path. The...
5206603 Circuit arrangement with electronically controllable transfer characteristic  
In a circuit arrangement with a electronically controllable transfer characteristic, the input signal is applied to an amplifier with a controllable negative feedback. The amplifier has its output...
5204639 Miller loop compensation network with capacitive drive  
A monolithic operational amplifier (10) having an Miller loop compensation network (13) with improved capacitive drive. The monolithic operational amplifier (10) has an input stage (11), an output...
5192884 Active filter having reduced capacitor area but maintaining filter characteristics  
An active filter comprises a differential-type voltage-controlled current source. A first resistor is connected between the first input terminal of the voltage-controlled current source and a first...
5184090 Head amplifier  
A head amplifier is integrated into an IC with a minimum number of pins and outside parts as well. An offset cancellation circuit cancels offset voltages to prevent distortion of playback signals....
5177382 Active filter circuit  
An active filter circuit comprises a differentiator constituted by an operational amplifier having an input terminal and output terminal, and a first integrator constituted by a first capacitor and...
5157288 Phase shifting circuits  
A phase shifting circuit includes: a pair of input terminals; a pair of output terminals; a variable gain amplifier and an active alternating current integrator, connected in series between the...
5157346 RF wideband high power amplifier  
A r.f. wideband high power amplifier (1) receives an input signal at its input via a coupler (7) whenever a signal for amplification is applied to an input port (15). The output of the amplifier...
5155447 Multi-stage amplifier with capacitive nesting and multi-path forward feeding for frequency compensation  
A multi-stage amplifier utilizes capacitive nesting of three or more amplifier stages in combination with multiple feed-forward paths to achieve frequency compensation. Two stages (A M and A O )...
5142240 Amplifier circuit with correction of amplitude and phase distortions  
A high frequency amplifier circuit comprises an amplitude characteristic correction circuit and a phase characteristic correction circuit for compensating the non-linearity of the input-output...
5138279 Leapfrog filter  
A leapfrog filter comprises a first integrator made up of a first operational amplifier and a first capacitor connected to output terminal of the first operational amplifier; a second integrator...
5113068 Photoelectrical sensor with multistaged, filtered amplifier circuit  
A photoelectrical sensor (10) provided with a multistaged, filtered amplifier circuit (16) for amplifying voltage pulses from a phototransducer (12) and a filtering I/V converter (14) includes...
5111154 Analog filter  
An analog active filter for realizing the secondary transfer function by using an amplifier having a feedback loop having a first integrating function block which integrates an input signal, second...
5105163 Balanced filter circuit having a single amplifier  
A balanced filter circuit includes only one balanced amplifier (10) having an inverting input (6) and a non-inverting input (5) and an inverting output (7) and a non-inverting output (8) for...
5101211 Closed loop RF power amplifier output correction circuit  
A closed loop RF power amplifier output correction circuit is disclosed, for providing closed loop continuous amplitude and phase correction of solid state amplifiers. The circuit includes a two...
5075635 Device for correcting the phase induced by the class C operation of the solid state amplifier and radar system using such a device  
The present invention relates to a device for correcting the phase induced by the class C operation of a solid state amplifier. It is applied in the field of the manufacture of pulse radar...
5066923 Linear transmitter training method and apparatus  
A linear transmitter having both an open loop and a closed loop training mode capability functions to schedule and facilitate these training modes in a manner that reduces adjacent channel...
5063356 Balanced filter circuit having a controllable balanced current multiplier  
A balanced filter circuit has a number of balanced pushpull amplifiers (10) whose inputs (11, 12) and outputs (13, 14) are coupled to filter resistors (20, 21, 22, 25, 27A/B) and filter capacitors...
5049831 Single-ended input to differential output amplifier with integral two-pole filter  
A single-ended input to differential output amplifier performs a predetermined transfer function on an input signal substantially independently of nonlinearities in component values. The input...
5045805 High precision composite amplifier with improved high speed response  
A high precision composite amplifier for use in a data acquisition subsystem of a Computerized Tomography (CT) scanner provides enhanced high speed response in terms of reduced settling time. The...
5028884 Leapfrog filter having adjustable center frequency and quality factor  
A leapfrog filter comprising a first and a second integrator each consisting of an operational amplifier and integrating capacitor. The leapfrog filter includes differential amplifier which is...
5027084 Transceiver modules for phased array antenna  
A transceiver module includes a bi-directional amplifier having a pair of symmetric signal paths for amplification of both transmit and receive signals is described. The amplifier is a...
5023564 Amplfier circuit  
An amplifier circuit is described comprising a transconductance amplifier in series with a voltage gain stage. A compensation capacitance coupled across the voltage gain stage includes a...
5010302 Charge amplifier circuit  
A charge amplifier circuit comprising an operational amplifier unit whose signal output is back to a signal input of the amplifier unit via a capacitative feedback element, the signal output of the...
5006814 Current amplifier  
A current amplifier including two stages. A first stage is formed by a primary operational amplifier (IC1) connected in a virtual earth feedback configuration and having a feedback loop formed by a...
5001441 Operational transconductance amplifier programmable filter  
A general biquadratic filter circuit is described which uses operational transconductance amplifiers. A bias current controls the transconductance (gm) of the amplifiers which in turn control the...
4999584 Signal-shaping network  
The invention relates to a signal-shaping network comprising a differential amplifier (G) having an output and an inverting (A) and a non-inverting (B) input between which a signal source (S) is...
4988952 High Q switched capacitor filter having internal thin-film resistors  
Disclosed is a switched capacitor filter block having a nonlinear quality coefficient, Q, whereby quality can be enhanced while limiting the size of feedback resistors in the filter block. A pair...
4984292 Bandpass amplifier and receiver using bandpass amplifier  
The present application relates to an active bandpass amplifier comprising a single stage operational amplifier, a bridged "T" network single frequency elimination filter in the negative feedback...
4926139 Electronic frequency filter  
A hearing aid that is compact and efficient and that provides a high degree of control over its frequency response and also over its output level versus input level characteristic. The frequency...
4926135 Balanced integrator-filter arrangement  
The invention relates to an active RC filter arrangement comprising a balanced amplifier (A 1 ) which can be extended to obtain an n th -order filter arrangement. Once a general n th -order...
4908579 Switched capacitor sampling filter  
This filter circuit comprises at least one basic cell (2) arranged as a switched capacitor sampling filter, together with a clock suitable for defining two different states for controlling...
4904951 Method and circuit for reducing effects of distributed capacitance associated with large thin film resistors  
A technique for reducing phase shift of a signal passing through a large thin film resistor on an insulating layer includes applying a signal to one terminal of the thin film resistor and also to...
4881043 Variable gain transconductance amplifier and variable bandwidth filter  
A variable gain transconductance amplifier wherein complimentary input followers are used in conjunction with the multiplier to provide a high input impedance. A pair of multiplier input devices...
4877979 Filter arrangement  
A fitter comprising a first (R 1 ) and a second (R 2 ) resistor arranged in series between an input terminal (5) for receiving an input voltage (v i ) and the input (2) of an amplifier. The...
4868516 Alternating current amplifier with digitally controlled frequency response  
An improved alternating current amplifier employs capacitive feedback to balance the intrinsic input capacitance, and a multiplier circuit responsive to a digital control signal coupled in the...
4866397 Wideband 0-90 degrees adjustable phase shifter  
The present invention is an improved phase shift circuit for a recovered clock signal used to recover data which provides an adjustable 90 degrees phase shift using a linear, constant current...
4862121 Switched capacitor filter  
A biquadrature switched capacitor filter having differential input/output integrator amplifiers (12,34) and switched capacitor networks (16,28,36,40). The differential outputs of one amplifier (12)...
4857860 Clock-sweepable low-pass filter having DC gain accuracy and reduced DC offset  
A switched capacitor filter having DC gain accuracy and low DC offset includes an operational amplifier with a resistor (or switched capacitor) connecting one input of the operational amplifier to...
4849709 Variable frequency characteristic circuit for a vehicular sound device  
A variable frequency characteristic circuit to be used in compensating the frequency characteristics in an audio device in a vehicle. A single operational amplifier is used. Different resonance...
4841179 Phase equalizing active filter  
A first operational amplifier (OP AMP) is connected at the positive input terminal to a signal input terminal. The positive output terminal of the first OP AMP is connected to a ground through a...
4835482 Semiconductor integrated circuit forming a switched capacitor filter  
A switched-capacitor filter of the present invention constituted in the form of a semiconductor integrated circuit has an input circuit which consists of at least one noninversion-type...
4833420 Low-pass filter for integrated circuit  
A low-pass filtering cell is disclosed. This cell uses a distributed capacitance resistive line having an intermediate tap to which a feedback capacitor is connected, the resistive line being...
4806874 Switched capacitor amplifier circuit  
A switched capacitor amplifier circuit using a pair of switched capacitors to replace each resistor element of an inverting operational amplifier circuit, with the capacitors operating on opposite...
4805126 Electronic compensation network  
An electronic compensation network which allows the analytic and empirical realization of the compensation needed to optimize a system response. The electronic compensation network includes a...
4803382 Voltage comparator circuit  
In a voltage comparator circuit, among first and second signal voltages to be compared, the first signal voltage is input to a first input terminal of a differential voltage comparator through a...
Matches 151 - 200 out of 507 < 1 2 3 4 5 6 7 8 9 10 11 >