Matches 1 - 50 out of 372 1 2 3 4 5 6 7 8 >


Match Document Document Title
9041467 Power amplifier with feedback impedance for stable output  
An amplifier circuit amplifies a signal for wireless transmission. A feedback circuit, including a capacitor, is coupled to the amplifier circuit. Components of the feedback circuit are selected...
8989307 Power amplifier system including a composite digital predistorter  
A power amplifier system including a composite digital predistorter (DPD) ensuring optimized linearity for the power amplifier is described. In this system, a digital-to-analog converter (DAC), an...
8971831 Front-end system for radio devices  
The present disclosure relates to a front-end system for a radio device, the front-end system comprising a low-noise amplifier (LNA), arranged for receiving a radio frequency input signal (RFIN)...
8860401 Sensor system and method  
The present invention provides a sensor system and a corresponding sensing method employing the sensor system. The sensor system comprises a sensor (12) having an input (20) and an output (22), a...
8861749 Audio output driver for reducing electromagnetic interference and improving audio channel performance  
An audio output circuit includes an on-chip left channel amplifier module, an on-chip center channel amplifier module, and an on-chip right channel amplifier module. A left channel IC pin is...
8704598 Linear FET feedback amplifier  
A circuit that includes a Darlington transistor pair having an input transistor and an output transistor configured to generate an output signal at an output node in response to an input signal...
8688045 FM transmitter and non-FM receiver integrated on single chip  
Exemplary embodiments include a frequency modulation (FM) transmitter and a non-FM receiver, which may be implemented on the same IC chip. The FM transmitter may include a digital FM modulator, a...
8653888 High-frequency signal amplifier  
A high-frequency signal amplifier includes an amplifier having an input terminal and an output terminal, and amplifying a high-frequency signal; a signal line connected between the output terminal...
8644773 Multiband low noise amplifier (LNA) with parallel resonant feedback  
A multiband low noise amplifier (LNA) with parallel resonant feedback includes an amplifier element configured to receive a radio frequency (RF) signal at an RF input and provide an amplified...
8508294 Power amplifier with feedback impedance for stable output  
In one embodiment, an apparatus includes an amplifier circuit having a phase shift. The amplifier circuit amplifies a signal for wireless transmission. A feedback circuit is coupled to the...
8410846 Variable gain amplifier  
A variable gain amplifier includes an integrator having an input, an output and a feedback loop connected between the input and output, a plurality of input chains connected in parallel between...
8390380 Linear FET feedback amplifier  
A circuit that includes a Darlington transistor pair having an input transistor and an output transistor configured to generate an output signal at an output node in response to an input signal...
8310310 Burst mode amplifier  
An integrator circuit cancels a DC offset component related to an average DC value of a burst mode input signal from the output of an amplifier. The integrator circuit outputs an average DC value...
8294520 Switchable multiband LNA design  
A low noise amplifying (LNA) circuit comprising an amplifying section (11, 12) and a feedback means (14) arranged for providing input matching from the output to the input. The LNA circuit further...
8232841 Amplifier with output filtering  
An amplifier circuit includes an amplifier including an inverting input that communicates with an input signal, a non-inverting input, and an output. A first feedback path communicates with the...
7888910 Sequencing switched single capacitor for automatic equalization of batteries connected in series  
Techniques for sequencing switched single capacitor for automatic equalization of batteries connected in series are described herein. In one embodiment, a battery equalizer includes a single...
7852158 Operational amplifier  
An operational amplifier includes, between an input and an output of an operational amplifier (an operational amplification stage) 10, a feedback capacitor 34 connected in negative feedback, a...
7750739 Dual reactive shunt low noise amplifier  
A dual reactive shunt feedback low noise amplifier design may include a transconductance amplifier having a capacitor coupled across it and a pair of coupled inductors coupled across it. In one...
7737787 Impedance-mapping amplifier circuit with exclusively reactive negative feedback  
An amplifier circuit has a transistor element that has an input terminal, an output terminal) and a third terminal. An input signal to be amplified is supplied to the input terminal. The amplified...
7541873 High frequency amplifier configuration for improved feedback capacitance neutralization  
A high frequency amplifier is provided with: an input terminal receiving a high frequency signal; an output terminal; a three-terminal active element having a first terminal connected with the...
7423489 Low return loss resistive feedback amplifier  
Embodiments related to resistive feedback amplifiers are presented herein.
7417498 Amplifier with feedback bridge  
An amplifier, in particular for RF-applications, comprises a circuit board (2), at least one amplifier stage with at least one transistor package (8) arranged on the circuit board (2), and a...
7388428 Power amplifier with controllable feedback loop  
The present invention relates to a power amplifier for amplifying an electronic input signal (51) and a multi-band capable frontend with such power amplifier. The power amplifier comprises an...
7355479 Neutralization of feedback capacitance in amplifiers  
A transistor amplifier circuit has a current to current feedback transformer for neutralization of feedback capacitance and setting the input impedance of the amplifier. IM3 cancellation is...
7339436 Ultra broad-band low noise amplifier utilizing dual feedback technique  
This invention relates to a low noise amplifier, used in radio frequency integrated circuit design, especially low noise amplifiers for ultra broad-band wireless communication, comprising at least...
7298205 Amplifier and frequency converter  
An amplifier circuit amplifies a signal inputted from an input terminal. A first feedback circuit is placed across an emitter of a bipolar transistor and an input of the amplifier circuit. A...
7292098 Operational amplifier  
An operational amplifier is described. The operational amplifier includes a first stage, a second stage, a third stage, and a fourth stage. The amplifier includes a nested...
7274257 Variable gain wideband amplifier  
The invention relates to a feedback or feedforward type variable gain wideband amplifier. The variable gain wideband amplifier includes a feedback-type inversion amplifier circuit 310 for...
7271660 Selectively adding auxiliary frequency compensation depending on the behaviour of an output transistor of a rail-to-rail operational amplifier  
A frequency compensation device for providing added compensation to an operational amplifier, such as a bipolar or MOS rail-to-rail output operational amplifier, when the output device of the...
7227420 Transimpedance amplifier with a high gain/bandwidth product for conversion of a DAC output current  
The two output currents (INP, IN) which are produced by a current source digital/analog converter (DAC) are supplied to the two halves of a symmetrical transimpedance amplifier. The input current...
7221218 MOSFET amplifier having feedback controlled transconductance  
A signal is applied to the body of a MOSFET to enhance the transconductance of the MOSFET. The signal applied to the body of the MOSFET has essentially the same waveform as an input signal...
7212072 High linearity smart HBT power amplifiers for CDMA/WCDMA application  
A power amplifier includes larger size transistors to provide higher power gain at lower frequencies. Transistors of transistor unit cells include a horseshoe-shaped emitter and a strip-shaped...
7202746 Multiple-stage operational amplifier and methods and systems utilizing the same  
A multiple-stage operational amplifier including a gain stage for amplifying an input signal and implementing a dominant pole producing a frequency response having a gain roll-off with frequency...
7199652 Amplifier; and transmitter and communication device incorporating the same  
The present invention provides an amplifier for amplifying a high-frequency signal and outputting an amplified signal. The amplifier includes: an amplification element which is a bipolar...
7183853 Feedback amplifier having amplified signal path and feedback signal path separated  
A separation circuit part is used to separate an amplified signal path from a feedback signal path. An amplifier circuit part comprises a resistor-loaded common-source FET, a level adjustment...
7154330 Stability compensation for adjustable gain amplifier  
Stability compensation for an amplifier with adjustable gain is provided via adjustable capacitance coupled to an input of a gain element within the amplifier. Gain of the amplifier is adjusted by...
7110718 Phase distortion using MOS nonlinear capacitance  
RF phase distortion circuits and methods for controllably phase distorting an RF signal based on amplitude of the RF signal. An MOS device is provided having a body of a first conductivity type...
7061313 Dual feedback linear amplifier  
A dual feedback topology imparts stability to a multistage linear amplifier, particularly by improving overall amplifier phase margin at higher signal frequencies. With dual feedback, an inner...
7049894 Ahuja compensation circuit with enhanced bandwidth  
An Ahuja compensation circuit includes a feedback loop with a high swing cascode biasing circuit. The high swing cascode biasing circuit includes a frequency boosting circuit. The frequency...
7023279 Linear pre-amplifier for radio-frequency power amplifier  
An amplifier including an input circuit tuned to the frequency to be amplified and receiving as an input the signal to be amplified, a first transistor connected in common base, the emitter of...
7020216 Method for adjusting a phase angle of a phase modifier of a transmitting device  
A method for adjusting a phase angle (φ) of a phase modifier (25) of a transmitting device which includes a quadrature modulator (3), a power amplifier (9), a quadrature demodulator (19) and...
6809594 Ultra broadband low noise amplifier with matched reactive input impedance  
A low noise amplifier (LNA) for amplifying an input signal communicated over a transmission line having an impedance. The LNA includes a current sensing amplifier having an input to connect to the...
6670801 Second harmonic tuning of an active RF device  
Second-order harmonic tuning of an active device, such as a transistor used in a radio frequency (RF) power amplifier circuit, is accomplished by positioning a quarter-wavelength stub along a...
RE38273 Baseband RF voltage-current probe  
An RF probe for a plasma chamber picks up current and voltage samples of the RF power applied to an RF plasma chamber, and the RF voltage and current waveforms are supplied to respective mixers. A...
6611174 Self-compensated transimpedance amplifier  
A method to increase the bandwidth of a transimpedance amplifier using capactive feedback. The resultant amplifier maintains wide bandwidth, high linearity, low noise, and low input impedance...
6611173 Miller effect-based circuit for splitting poles  
A circuit for splitting poles between a first stage and a second inverting voltage-amplifier stage of an electronic circuit, comprises, in series between the output of the first stage and the...
6580325 Amplifier with miller-effect frequency compensation  
An amplifier with Miller-effect frequency compensation in which the Miller feedback capacitor is connected to an internal terminal of the amplifier having a low impedance, and shunt compensation...
6573790 Wide-bandwidth operational amplifier  
An operational amplifier (opamp) [74] coupled in a negative-feedback configuration [82] [84] comprising a driving opamp [76]; a linear controller [78]; and a mechanism [80] controlling the driving...
6556083 Method and apparatus for maintaining stability in a circuit under variable load conditions  
A circuit (10) having multiple poles within an active frequency range employs a movable zero (66) to maintain stability in the circuit (10) under variable load conditions. A pole (62) created by a...
6492876 Low power analog equalizer with variable op-amp gain  
A low power analog equalizer is disclosed that provides up to twenty decibels (20 dB) of alternating current gain in a single stage of analog signal equalization. The analog equalizer comprises an...

Matches 1 - 50 out of 372 1 2 3 4 5 6 7 8 >