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9026063 Complementary metal-oxide semiconductor direct current to direct current converter  
Disclosed embodiments include a direct current to direct current (DC-DC) converter including one or more charge pumps and configured to receive an input voltage and a first clock signal and a...
9024358 Compound semiconductor device with embedded electrode controlling a potential of the buffer layer  
A compound semiconductor device includes a substrate; a buffer layer formed on the substrate; an electron transit layer and an electron donating layer formed on the buffer layer; a gate electrode,...
8994454 Amplifier circuit  
According to embodiments of the present invention, an over-input signal may be limited to be within a range between adjustable upper limit voltage and lower limit voltage while suppressing...
8963472 Integration of spindle external sense resistor into servo IC with stable resistance control circuit  
An apparatus, comprises three driver FETs coupled at their sources; note-driver circuit; a first sense FET coupled to the sources of the three driver FETs; a current mirror having the first sense...
8963613 Canceling third order non-linearity in current mirror-based circuits  
A current mirror circuit is described. The current mirror circuit includes a first transistor and a second transistor. The gates of the first transistor and the second transistor are coupled at a...
8942760 Integrated bluetooth and wireless LAN transceivers having merged low noise and power amplifier  
A group of transistors operate as a combined power amplifier, to amplify signals to be transmitted, and as a low noise amplifier, to amplify signals which are received. In a first mode, the group...
8928411 Integration of signal sampling within transistor amplifier stage  
Embodiments of the invention are generally directed to integration of signal sampling within a transistor amplifier stage. An embodiment of an apparatus includes a amplifier stage including a...
8928410 Electronic circuits including a MOSFET and a dual-gate JFET  
Electronic circuits and methods are provided for various applications including signal amplification. An exemplary electronic circuit comprises a MOSFET and a dual-gate JFET in a cascode...
8890623 System and method for reducing stress in a cascode common-source amplifier  
A method of reducing stress in a cascode common-source amplifier including a first transistor and a second transistor connected in a cascode arrangement. The method includes providing an input...
8892159 Multi-standard transceiver architecture with common balun and mixer  
A multi-standard transceiver comprises a common balun, a controller, at least one first switch, and at least one second switch. The common balun comprises a primary coil and a secondary coil. The...
8890615 Buffering apparatus and method  
The output impedance of an amplifier is substantially matched to an input impedance of a receiver using a buffer circuit. The buffer circuit includes a primary transistor and a secondary...
8878611 High-frequency amplifier  
According to one embodiment, a high-frequency amplifier is provided with a field effect transistor for performing amplification, and a stabilizing circuit. The field effect transistor has a source...
8854144 High voltage amplifiers and methods  
Some embodiments provide an amplifier apparatus, comprising: a plurality of amplifier transistor circuits coupled in series, wherein each of the plurality of amplifier transistor circuits...
8847689 Stacked amplifier with diode-based biasing  
Techniques for improving linearity of amplifiers are described. In an exemplary design, an amplifier (e.g., a power amplifier) may include a plurality of transistors coupled in a stack and at...
8836432 Amplifier  
An amplifier includes an amplifying element that amplifies an input signal; an output terminal that outputs the signal amplified by the amplifying element; a matching circuit disposed in series...
8836429 CMOS integrated circuit and amplifying circuit  
There is provided a CMOS integrated circuit capable of avoiding deterioration of NF characteristic and achieving a high degree of linearity in the case in which an LNA circuit is formed on an SOI...
8823458 Circuit and power amplifier  
A cascode circuit includes a first transistor and a second transistor. The first transistor and the second transistor are connected to make a cascode. In addition, the circuit has a block...
8810285 Semiconductor integrated circuit apparatus and radio-frequency power amplifier module  
In a semiconductor integrated circuit apparatus and a radio-frequency power amplifier module, a log detection portion including multiple-stage amplifier circuits, multiple level detection...
8803613 Power amplification apparatus  
According to one embodiment, a power amplification apparatus includes an field effect transistor (FET), a first decoupling element, a power supply circuit, a second decoupling element, and a third...
8781028 Integrated receiving circuit and method for radiofrequency and high speed signals  
Integrated receiving circuit for radiofrequency signals an amplifying element using the multiplication zone of a reverse biased semiconductor junction operating in Geiger mode for amplifying an...
8774741 Reconfigurable power amplifier for improved low-power efficiency  
A radio frequency (RF) power amplifier (PA) is reconfigured to operate in a low power mode from a high power mode. The RF PA has a first RF amplifier is connected to the first and second inputs of...
8756647 LNB control circuit that provides power and control commands  
One embodiment may take the form of a control circuit that provides a combined power signal and control signal to an LNB of a satellite system. The control circuit output may be transmitted to an...
8742849 Linear source follower amplifier  
A linear source follower amplifier is provided with a first metal-oxide semiconductor (MOS) field effect transistor (FET) having a gate to accept an ac input signal and a source to supply an ac...
8742628 Solid state circuit breaker  
A solid state circuit breaker includes a first terminal; a second terminal; a first wide-band gap field effect transistor coupled to the first terminal; a second wide-band gap field effect...
8742853 Low-stress cascode structure  
An amplifier system comprises a cascode common-source (CS) amplifier including a plurality of transistors connected in a common-source configuration. A stress reducing circuit is connected to at...
8736379 Input match network for a power circuit  
A power circuit includes a RF transistor and an input match network coupled to an input to the RF transistor and to an input to the power circuit. The input match network includes a resistor, an...
8736383 Power amplifier circuit and control method  
A power amplifier circuit uses an output transistor and a cascode transistor. First and second drive circuits apply gate control signals to the two transistors, which rise and fall in synchronism,...
8729739 Bi-directional circuit breaker  
A circuit breaker comprising first and second JFETs, each comprising a gate, drain and source connection, the JFETs sources being operatively connected to each other to form a common-source...
8723602 Method and apparatus for a class-E load tuned beamforming 60 GHz transmitter  
The class-E amplifier can be tuned to pass only the fundamental frequency to the antenna by optimizing the second harmonics at the drain of the final PA driver transistor. A CPW in series with a...
8723600 Cancellation of dynamic offset in MOS resistors  
A circuit utilizes a MOS device in a triode mode of operation and includes a biasing circuit and a MOS device. The MOS device has a drain, a source, and a gate terminal, and is coupled to the...
8704585 Method for forming an electric signal representing a sound and a device therefor  
A method for driving a field effect transistor for shaping an electrical signal, representing a sound, to an output signal is disclosed. The method comprises modifying the input signal to an...
8669815 Amplifier, apparatus and method for controlling amplifier in communication system  
An apparatus for controlling an amplifier in a communication system includes a first shifter, a generating unit, a second shifter, and a switching bias unit. The first shifter is configured to...
8660485 Near field communication device  
Near field communication (NFC) devices may be required to operate at low power and so process small signals which are more susceptible to corruption by noise. An NFC device 100 is described having...
8643438 Class-AB power amplifier  
According to an embodiment, a class-AB power amplifier includes an amplifying element whose power supply voltage is expressed as Vdc and whose maximum current is expressed as Imax, a conduction...
8644759 Offset cancellation for DC isolated nodes  
Offset voltages developed on floating nodes on inputs to high-performance amplifiers that are DC isolated from the data signals input to amplifiers are cancelled by connecting a highly resistive...
8624676 Broadband transistor bias network  
An amplifying circuit for use in, for example, broadband transceivers is described. A bias filter is connected between an amplifying transistor and a power supply to block a wide range of...
8624674 Output stage of a class-A amplifier  
An output stage of an integrated class-A amplifier in a technology adapted to a first voltage and intended to be powered by a second voltage greater than the first one, including: one or several...
8614603 Auto leveling receiver  
An auto leveling circuit suitable for use in an RF receiver. The auto leveling circuit comprises a plurality of automatic gain control (AGC) circuits each having at least one amplifier stage to...
8604883 Class-C power amplifier  
According to one embodiment, a class-C power amplifier includes an amplifying element whose power supply voltage is expressed as Vdc and whose maximum current is expressed as Imax, a conduction...
8604880 Buffering apparatus and method  
The output impedance of an amplifier is substantially matched to an input impedance of a receiver using a buffer circuit. The buffer circuit includes a primary transistor and a secondary...
8593225 Hybrid class amplifier  
A power amplifier is configured to generate impedances at harmonic frequencies such that the power amplifier operates in a class C mode in a low output amplitude range and in a class F or inverse...
8588433 Electret microphone circuit  
There is disclosed a microphone, a circuit, and a method. A microphone capsule may include an electret microphone and a field effect transistor (FET). A floating DC voltage source may have a first...
8577325 Low noise amplifier having both ultra-high linearity and low noise characteristic and radio receiver including the same  
Disclosed herein is a low noise amplifier having both ultra-high linearity and a low noise characteristic and a radio receiver including the low noise amplifier. The low noise amplifier includes a...
8571496 Semiconductor device for signal amplification  
A semiconductor device for transmitting-signal amplification which has a fine resolution, a high dynamic range, a small occupied area, and low power consumption, is realized. An input signal...
8564370 Error amplifier and LED circuit comprising the same  
An error amplifier and a LED circuit comprising the same are provided. The LED circuit comprises an inductor, a group of LEDs and a power MOS connected to the inductor, an error amplifier and a...
8558619 Silicon-on-insulator high power amplifiers  
Illustrative embodiments of power amplifiers are disclosed. In one embodiment, a power amplifier includes a plurality of transistors formed on a silicon-on-insulator (SOI) substrate such that the...
8554162 High efficiency power amplifier  
A power amplifier circuit utilizes a cross-coupled tapped cascade topology together with a technique of applying an RF injection current into a wideband node to provide a single-stage power...
8525594 Radio frequency amplifier circuit  
A radio frequency amplifier circuit according to the present invention is for providing a radio frequency amplifier circuit with high output and high efficiency, and includes (i) a first harmonic...
8509629 High sensitivity two-stage amplifier  
The invention relates to amplifiers and in particular, to a transimpedance amplifier for high rate applications. Disclosed is a two stage transimpedance amplifier having a first stage comprising...
8487702 Transimpedance amplifier and method thereof  
A transimpedance method and apparatus are provided. In one implementation an apparatus includes a common-gate amplifier for receiving a first current from a first circuit node and outputting a...