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7626454 |
Radio frequency signal amplifying device
There is provided a radio frequency (RF) signal amplifying device consuming less power and operable at a high voltage in a PA driving amplifying apparatus applicable to a PA amplifying circuit...
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7626461 |
Transconductance stage arrangement
The present invention relates to a voltage-to-current transconductance stage arrangement comprising a single-ended input, an emitter-coupled pair of transistors, comprising a first transistor and a...
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7598805 |
Load insensitive balanced power amplifier and related operating method
A balanced power amplifier that is insensitive to load line variations is provided. The balanced power amplifier is suitable for use in wireless transmitter applications, such as cellular...
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7596364 |
Merged low-noise amplifier and balun
An RF amplifier can include a differential inductor for single-ended-to-differential signal conversion. With a center tap of the differential inductor coupled to signal ground and the RF input...
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7595697 |
Wireless transmitter
A magnetic field tolerant amplifier having an amplifier stage, a differential to single-ended output amplifier stage and a first and second delay line. In another embodiment the invention relates...
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7592866 |
Widebrand differential amplifier including single-ended amplifiers coupled to a four-port transformer
A differential amplifier is formed from a first single-ended amplifier circuit, a second single-ended amplifier circuit, and a four-port transformer circuit coupled to the first and second...
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7592872 |
Differential amplifier with single ended output
Various embodiments for converting a differential signal to a single ended signal are disclosed. The embodiments comprise a transistor pair for receiving a differential signal; and a tank circuit...
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7576608 |
Amplifier circuit with voltage interpolation function
An amplifier circuit with a voltage interpolation function includes an N-type differential pair and a P-type differential pair. The N-type differential pair includes a first transconductance value,...
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7538618 |
Wideband active balun circuit based on differential amplifier
Provided is a wideband active balun circuit based on a differential amplifier. The active balun circuit is configured to compensate for unbalance between two differential signals and can be applied...
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7525390 |
Circuit for converting a differential signal into a non-differential signal, and RF transmitter comprising such a circuit
A circuit for converting a differential signal into a nondifferential signal comprising first and second inputs respectively receiving first and second components of a differential signal. The...
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7504888 |
Internally compensated differential amplifier
The invention relates to a differential amplifier with internal compensation. The invention also relates to a regulator controller and a regulator which includes such an amplifier. The amplifier...
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7499677 |
Low voltage differential signaling transceiver
A low voltage differential signaling transceiver includes a transmitter and a receiver, the transmitter having a first terminal in signal communication with a transmission line, a source resistance...
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7471156 |
Amplifier containing programmable impedance for harmonic termination
An apparatus and method for eliminating unwanted signal power dissipation in balanced amplifier circuits and for prohibiting unwanted signal power from appearing at the balanced amplifier load is...
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7468635 |
Wideband digital single-to-differential converter and method of forming same
A method and apparatus for single-to-differential conversion includes a single-to-differential stage ( 22 ), a phase balancing stage ( 24 ), and a buffer stage ( 26 ). The single-to-differential...
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7468634 |
Apparatus for converting single-ended signal into differential signal
The present invention discloses a single-ended input/differential output amplifier includes a first bonding wire, a transduction gain circuit coupled to the first bonding wire for receiving an...
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7446613 |
Power amplifier input structure having a differential output
A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power...
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7437345 |
Image rejection mixer and multiband generator
The present invention suppresses a harmonic component without impairing the phase orthogonality of a pair of complex signals. A polyphase filter is configured so that K pieces of filter circuits,...
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7420423 |
Active balun device
An active balun device is provided. The active balun device includes: a differential input portion for receiving an external single input signal to output two complementary differential signals;...
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7414480 |
Differential/single-ended input stage
An input stage for an integrated circuit device provides constant gain in selectable modes of either differential or single-ended operation. In one embodiment, transconductance devices are arranged...
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7375590 |
Single-ended input to differential-ended output low noise amplifier implemented with cascode and cascade topology
A low noise amplifier has the properties of low noise figure and high gain under a high-frequency operation. The low noise amplifier includes a first transistor, a first inductive impedance, a...
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7368990 |
Differential amplifier and data driver employing the differential amplifier
Disclosed is a differential amplifier which includes first and second input terminals, an output terminal, first and second differential pairs, and first and second current sources for supplying...
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7368982 |
Balanced output circuit and electronic apparatus utilizing the same
In a balanced output circuit, an input signal inputted thereto is provided as a first output signal thereof on one hand, and on the other hand the input signal is inputted to an inverting...
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7362182 |
Power amplifier
A radio frequency power amplifier including control electronics for providing control signals for timing of the power amplifier. A first group of the drivers are coupled to the control electronics...
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7358815 |
Monolithic transformer based amplifier for integrated circuits
Monolithic transformer based amplifier for integrated circuits. The amplifier includes an input transformer with a first impedance transforming ratio. The input transformer includes a coupled line...
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7288994 |
Differential to single-ended converter
A converter is for a differential input signal into a single-ended output signal and may include a differential pair of identical first and second transistors driven by the differential input...
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7279982 |
Apparatus and method for low current differential swing I/O interface
Low current differential signal/swing I/O interfaces and techniques can be implemented. An output interface converts input data signals to differential current signals for transmission over...
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7233209 |
Integrated preamplifier circuit for detecting a signal current from a photodiode
An integrated preamplifier circuit for detecting a signal current from a photodiode and converting the signal current into an output voltage is provided. The circuit includes a signal amplifier and...
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7233201 |
Single-ended pseudo-differential output driver
A differential pair of transistors includes a first transistor and a second transistor having their sources coupled together. Their sources are further coupled to ground via a pull-down network. A...
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7224231 |
Method for transforming output signals of a low-noise amplifier of a wireless transceiver
A method for transforming single-ended signals outputted from a low-noise amplifier of a wireless transceiver into differential signals. The method includes: providing a transformer according to a...
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7205844 |
Low noise and high gain low noise amplifier
high-gain and low-noise low noise amplifier (LNA) includes a differential amplifier, a pre-amplifier and an impedance matching network. The differential amplifier includes a first input end and a...
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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...
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7199665 |
Single to dual non-overlapping converter
A converter includes an input circuit to receive a single-ended input signal to generate a number of control signals. The control signals have a delay different from one another relative to the...
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7193475 |
Single-ended input to differential output low noise amplifier with a cascode topology
A single-ended input to differential output LNA with a cascode topology of the present invention overcomes a much greater consumption of current and area for the single-ended input to differential...
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7170353 |
Balanced amplifier circuit and high-frequency communication apparatus
Between an output terminal (drain terminal) of a semiconductor device in a first unit amplifier and an output port, a −90 degrees phase-shift circuit is connected, while between an output...
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7157965 |
Summing power amplifier
A power amplifier comprises an amplification stage comprises a plurality of amplifiers, wherein each amplifier provides an amplified output, and an inductive summing device configured to receive...
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7142061 |
Balanced single ended to differential signal converter
Techniques and circuits for generating a pair of differential signals with balanced switching between logical states from a single ended input signal are provided. The differential signals may be...
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7113045 |
Power amplifier input structure having a differential output
A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power...
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7109802 |
Bipolar differential to single ended transfer circuit with gain boost
A differential to single-ended signal transfer circuit that allows increased gain and improved AC performance while reducing power supply voltage requirements. The transfer circuit includes a first...
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7102443 |
Temperature-stabilized amplifier circuit
A circuit for amplifying an input voltage (VIN) into an output voltage (VOUT) with an overall gain factor, which is a product of a first gain factor (S) and a second gain factor (R 1 ), comprises...
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7098742 |
Differential/single-ended input stage
An input stage for an integrated circuit device provides constant gain in selectable modes of either differential or single-ended operation. In one embodiment, transconductance devices are arranged...
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7091791 |
Transformer implementation using bonding wires
The use of the magnetic coupling between bonding wires can be advantageously used to transform a differential signal to a single-ended signal. Because bonding wires are very good conductors, this...
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7088185 |
Antenna diversity structure for use in a radio frequency integrated circuit
A radio frequency integrated circuit includes a power amplifier, a low noise amplifier, a first transformer balun, and a second transformer balun. The power amplifier includes a first power...
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7088184 |
High frequency amplifier in an integrated circuit
The invention concerns an integrated circuit amplifier designed to supply an amplified signal at a power of a few hundreds of milliwatts at frequencies from one to several Gigahertz. The final...
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7061329 |
Semiconductor device having balanced circuit for use in high frequency band
A semiconductor chip for amplification is connected between input-side and output-side matching circuits, and each of matching circuits includes balanced circuits which receive signals different in...
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7057458 |
Balanced power amplifier and high-frequency communication apparatus
A balanced power amplifier includes grounded-emitter first and second bipolar transistors that are disposed in parallel, first and second variable impedance elements with each one end being...
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7035616 |
Two-stage variable-gain mixer employing shunt feedback
A demodulator which includes an active balun circuit and at least one mixer driven by the active balun circuit. The active balun circuit includes a negative shunt feedback arrangement.
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6982601 |
High isolation/high speed buffer amplifier
A method and circuits of a high isolation and high-speed buffer amplifier capable to handle frequencies in the GHz range have been achieved. The output to input isolation is primary dependent on...
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6967515 |
Single-ended to differential conversion circuit with duty cycle correction
A circuit to provide a differential signal output in response to a single-ended signal input, the circuit allowing for a wide common-mode input signal by providing complementary amplifier structures.
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6965266 |
High voltage differential amplifier using low voltage devices
A high voltage differential amplifier including an input differential pair of low voltage transistors, a sense differential pair of low voltage transistors, first and second high voltage...
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6937098 |
Translinear amplifier
In a translinear amplifier, where the output voltage difference is kept at the same relative difference as the input voltage difference and which is normally formed by two current balancing...
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