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7616053 |
Power amplifier circuit and method for envelope modulation of high frequency signal
A power amplifier circuit includes: a transformer receiving a first signal and generating a transformed signal from the first signal; and a transistor receiving a second signal having a direct...
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7612610 |
Active input load wide bandwidth low noise HEMT amplifier
A relatively wide bandwidth low noise amplifier with an active input matching network. The active load maybe formed from a field effect transistor (FET) or high electron mobility transistor (HEMT)...
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7599670 |
Dynamic bias for receiver controlled by radio link quality
DC power savings in a mobile communication device can be achieved by dynamically adjusting the biasing for a receiver based on the communication link quality. The output signal levels of at least...
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7580674 |
Intelligent interface for controlling an adaptive antenna array
An antenna control interface is integrated with common integrated circuit components, such as radio transceiver or baseband modem signal processing control logic. The antenna control interface...
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7576613 |
Regulated cascode circuits and CMOS analog circuits including the same
A regulated cascode circuit includes a first MOS transistor of a first conductive type, a second MOS transistor of the first conductive type, a third MOS transistor of a second conductive type, a...
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7560993 |
Amplifier
An amplifier has a self-bias circuit to generate the bias voltage for the input of the amplifying circuit in the amplifier, thereby simplifying the circuit complexity to reduce the size and cost of...
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7560985 |
Two-stage amplification using intermediate non-linear square wave
A two-stage amplifier is provided, which in the first stage, a first amplifier generates a non-linear square wave based on a harmonic input. The non-linear square wave has the same frequency as the...
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7551035 |
Fast converter for crossing voltage domains
A voltage domain crossing circuit and method are disclosed. In one embodiment, the voltage domain crossing circuit comprises an AC coupling component, a DC biasing component and a high voltage...
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7548113 |
Apparatus, amplifier, system and method for receiver equalization
In some embodiments an apparatus includes an amplifier, a first inverter having an input coupled to an output of the amplifier, and a second inverter having an input coupled to an output of the...
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7545298 |
Design structure for a digital-to-analog converter using dual-gate transistors
A design structure embodied in a machine readable medium, the design structure including a current mirror including N stages, each stage comprising 2 n−1 dual gate transistors where N is a...
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7545297 |
Digital-to-analog converter using dual-gate transistors
A digital to analog converter. The digital to analog converter including a current mirror comprising N stages, each stage comprising 2 n−1 dual gate transistors where N is a positive integer...
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7525384 |
Transmission line amplifier
A transmission line amplifier utilizes a transmission line transistor having a gate line, and first and second lines. The gate line is a gate of the transistor, one of the first and second lines is...
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7508249 |
Distributed transistor structure for high linearity active CATV power splitter
A transistor cell includes a first stage comprising a first transistor that is coupled to a RC filter arrangement. A second stage has a second transistor that is coupled to the first stage. The...
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7482875 |
High frequency power amplifier
The invention provides a wide-band, low-noise, and small-sized high frequency power amplifier that has small temperature dependence of the gain and is excellent in input matching. A parallel...
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7468500 |
High performance charge detection amplifier for CCD image sensors
The CCD charge detection amplifier includes a floating diffusion charge detection node biased from a voltage reference node; a reset device coupled between the floating Diffusion charge detection...
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7459980 |
Apparatus for receiver equalization
In some embodiments an apparatus includes an amplifier, a first inverter having an input coupled to an output of the amplifier, and a second inverter having an input coupled to an output of the...
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7439805 |
Enhancement-depletion Darlington device
An apparatus comprising a Darlington transistor pair comprising a first transistor and a second transistor. The first transistor may have a gate configured to receive an input signal. The second...
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7420420 |
FET bias circuit
The present invention discloses an FET (Field Effect Transistor) bias circuit comprising a current-changing information circuit having a power source, a resistor connected to the signal output end...
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7420418 |
Circuit for improving amplification and noise characteristics for MOSFET, and frequency mixer, amplifier and oscillator using the circuit
A circuit for improving amplification and noise characteristics of a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), and a frequency mixer, an amplifier and an oscillator using the...
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7420417 |
Two-port dual-gate HEMT for discrete device application
A two-port dual-gate field-effect transistor for amplifier applications, wherein a self-bias circuit includes a number of passive elements, such as resistors, diodes and capacitors, is utilized to...
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7391269 |
Amplifying circuit
The invention provides an amplifying circuit for reducing electric power consumption at a standby mode time. Therefore, in DMOS and NMOS transistors constituting a cascode amplifier, the gate of...
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7368995 |
Power amplifier with active bias circuit
A power amplifier with an active bias circuit and operating method thereof are provided. The power amplifier comprises a power amplifier transistor and an active bias circuit. The active circuit...
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7368994 |
Class AB enhanced transconductance source follower
A low voltage, high bandwidth, enhanced transconductance, source follower circuit constructed from MOS FET devices, which operates in a class AB mode. The drain current of the source follower is...
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7368993 |
Transconductance circuit with improved linearity
A transconductance circuit, comprising: first and second field effect transistors, each having a drain, a source and a gate; wherein the first transistor is in a first current flow path between...
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7349681 |
Self-biased high-speed receiver
A self-biased high-speed receiver is described. The receiver is powered by one power supply with the core operation voltage and one power supply with the IO operation voltage. The receiver is...
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7345545 |
Enhancement mode transceiver and switched gain amplifier integrated circuit
Methods and apparatus are provided for RF switches ( 504, 612 ) integrated in a monolithic RF transceiver IC ( 500 ) and switched gain amplifier ( 600 ). Multi-gate n-channel enhancement mode FETs...
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7345528 |
Method and apparatus for improved clock preamplifier with low jitter
A clock signal preamplifier comprises complementary pairs of differentially coupled transistors, with an output signal coupled to an inverter further comprising a totem-pole arrangement of...
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7342453 |
Cascode circuit
A cascode circuit in which two field effect transistors (“FET”) are connected in cascode has a first FET having its source grounded, a second FET having its source connected to the drain of the...
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7340229 |
High frequency amplification circuit and mobile communication terminal using the same
A gain control circuit 12 comprises an FET 41 operating as a variable resistor. A gate terminal of the FET 41 is supplied with a control voltage VC applied to a gain control terminal 23 . A...
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7301401 |
Low noise op amp
An analog circuit for processing analog signals in an integrated circuit comprising a number of metal oxide semiconductor transistor devices. The circuit includes a first transistor device having a...
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7248120 |
Stacked transistor method and apparatus
A method and apparatus is described for controlling conduction between two nodes of an integrated circuit via a stack of FETs of common polarity, coupled in series. In an RF Power Amplifier (PA)...
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7247830 |
Output amplifier for solid-state imaging device
An output amplifier for a solid-state imaging device is provided and includes: a floating diffusion that stores a signal charge; and at least three source follower circuits that output a signal in...
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7239205 |
High frequency amplifier circuit and mobile communication terminal using the same
A first FET is inserted in a series position between a signal input terminal and a signal output terminal, while second and third FETs are inserted in a shunt position respectively between the...
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7230489 |
System and apparatus for receiver equalization
In some embodiments an apparatus includes an amplifier, a first inverter having an input coupled to an output of the amplifier, and a second inverter having an input coupled to an output of the...
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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...
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7224232 |
RF power amplifier and method for packaging the same
A method and apparatus is provided for use in power amplifiers for reducing the peak voltage that transistors are subjected to. A power amplifier is provided with first and second switching devices...
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7221217 |
Self-bias and digitally tunable conduction angle circuits for a differential RF non-linear power amplifier employing low-voltage transistors
A differential RF non-linear power amplifier employing low-voltage transistors in a cascode configuration uses self-biasing solutions rather than external biasing techniques to overcome transistor...
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7215193 |
Method and apparatus for limiting power amplifier voltage excursions
A power amplifier circuit includes a circuit topology with first and second switching elements. The first and second switching elements have a closed state and an open state, wherein current flows...
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7212070 |
Circuit and method of reducing noise in an RF power amplifier
A method and apparatus is used to provide DC stabilization and noise reduction in a multistage power amplifier. The invention uses various feedback techniques to stabilize DC levels, which helps to...
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7199669 |
Dual gate cascade amplifier
A dual gate cascade amplifier includes a first transistor and a second transistor electrically connected in series, the second transistor including a first parallel transistor and a second parallel...
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7193469 |
System and method for testing gate oxide of an amplifier
An amplifier system and method is provided for performing gate oxide integrity (GOI) testing of a power output field effect transistor (FET) of the amplifier system. The amplifier system and method...
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7187238 |
Circuit for adjusting the operating point of multiple gate field effect transistors
An amplifier circuit includes a first multiple gate field-effect transistor having a source terminal, a drain terminal, at least one signal gate terminal for receiving an input signal and at least...
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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 diode...
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7167053 |
Integrated circuit amplifier device and method using FET tunneling gate current
An integrated circuit amplifier includes, in an exemplary embodiment, a first field effect transistor (FET) device configured as a common source amplifier with source degeneration and a second FET...
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7157972 |
Common gate with resistive feed-through low noise amplifier
A radio-frequency amplifier is provided. The radio-frequency amplifier includes a transistor having an input terminal, an output terminal, a control terminal, and a transconductance g m . A...
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7154329 |
Method and apparatus for compensating amplifier output for temperature and process variations
An amplifier circuit includes a calibration circuit with a controllable circuit element such as a digital resistor. One or more properties of the controllable circuit element (e.g., the resistance...
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7151412 |
Sliding cascode circuit
Described techniques extend (e.g., by a factor of 2) the dynamic range of voltage swing for amplifiers and other integrated circuits (e.g., buffers) that are fabricated using lower voltage rated...
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7145394 |
High frequency power amplifier module, and wireless communication system
A high frequency power amplifier module of a multistage amplifier construction comprising: an input terminal; an output terminal; a control terminal; and a mode switching terminal. The first...
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7138875 |
Cascoded power amplifier, particularly for use in radio frequency
A power amplifier comprising at least a load element and at least an active element inserted, in series to each other, between a first and a second voltage reference is described. Advantageously,...
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7135925 |
Adaptive bias scheme for high-voltage compliance in serial links
A high-speed serial-link driver transmits a differential data signal to a conventional differential receiver via a differential channel. The driver employs termination voltages that are high,...
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