Class 327/427 - Field-effect transistor

Subclass of Class 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
Definition: Subject matter including a unipolar transistor in which
No. of patents: 832
Last issue date: 05/22/2012

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Number	Title	Issue Date
8183908	High frequency switching circuit for reducing insertion loss and restricting variations in harmonic levels There is provided a high frequency switching circuit having good characteristics of high-order harmonics that has little variation. A high frequency switching circuit according to an aspect of the invention may include: a high frequency switch having one end connect...	05/22/2012
8159282	Semiconductor integrated circuit and high frequency module with the same The present invention is directed to reduce increase in the level of a harmonic signal of an RF (transmission) Tx output signal at the time of supplying an RF Tx signal to a bias generation circuit of an antenna switch. A semiconductor integrated circuit includes an...	04/17/2012
8149043	Semiconductor device and electronic apparatus using the same The transistor suffers the variation caused in threshold voltage or mobility due to gathering of the factors of the variation in gate insulator film resulting from a difference in manufacture process or substrate used and of the variation in channel-region crystal s...	04/03/2012
8143935	Circuit and method for controlling charge injection in radio frequency switches A circuit and method for controlling charge injection in a circuit are disclosed. In one embodiment, the circuit and method are employed in a semiconductor-on-insulator (SOI) Radio Frequency (RF) switch. In one embodiment, an SOI RF switch comprises a plurality of s...	03/27/2012
8130022	Ultra-low current push-button switch interface circuit Circuits and methods to achieve a switch interface circuit for a single pole, single throw (SPST) momentary push-button switch consuming a few tens of nanoamps whilst the push-button switch is closed, having low impedance input path when the switch is open in order ...	03/06/2012
8115534	Analog switch controller Methods and systems for implementing an analog switch controller to improve linearity of analog switches are described. ...	02/14/2012
8098088	High-voltage switch using three FETS Switch circuits are disclosed, for providing a single-ended and a differentially switched high-voltage output signals by switching a high supply voltage in response to at least one logic-level control signal. The switch that provides the single-ended switched high-v...	01/17/2012
8085083	Current-source gate driver Provided is a current-source gate driver for use with a switching device having a gate capacitance, including an input terminal for receiving a DC voltage; a first switch connected between the input terminal and an output terminal; a second switch connected between ...	12/27/2011
8008963	Analog switch An analog switch having a low capacitance is achieved. Potentials of input/output terminals of the analog switch and a well potential and a gate potential of an NMOS switching device are operated in synchronization via level shift buffers, thereby cancelling parasit...	08/30/2011
8004344	Gate-charge retaining switch This invention provides a means and method for preventing unwanted semiconductor turn-on and turn-off, caused by a high rate of voltage change, without significantly affecting the desired ON and OFF transitions of the semiconductor. According to this invention, time...	08/23/2011
7990202	System and method for driving bipolar transistors in switching power conversion A system and method for driving a bipolar junction transistor is provided. The system includes a first transistor including a first gate, a first terminal, and a second terminal. The first gate is configured to receive a first control signal. Additionally, the syste...	08/02/2011
7965127	Drive circuit for a power switch component A drive circuit for a power switch component. ...	06/21/2011
7961031	Semiconductor switch circuit A semiconductor switch circuit is provided that enables current consumption to be reduced even in a conduction state. A semiconductor switch circuit 100 has P-type MOS transistors Q101 and Q102 for conduction that share a source and are connecte...	06/14/2011
7956669	High-density low-power data retention power gating with double-gate devices A new power gating structure with robust data retention capability using only one single double-gate device to provide both power gating switch and virtual supply/ground diode clamp functions. The scheme reduces the transistor count, area, and capacitance of the pow...	06/07/2011
7952420	Counting apparatus A counting apparatus includes a sampling circuit, and a counting and displaying circuit. The sampling circuit includes an interface, a first electric switch, and a second electric switch. The counting and displaying circuit includes a counter and a display tube. Sev...	05/31/2011
7952419	Bootstrapped switch circuit A bootstrapped switch circuit can include a switch transistor, having a drain configured as an input terminal to receive an input signal, and a voltage-controlled voltage source, configured to provide predetermined constant voltages between a gate and a source of th...	05/31/2011
7952418	Enhanced transistor gate drive An enhanced transistor gate drive is disclosed in which a pair of Kelvin sense leads measure the voltage potential across at the gate and source of the transistor. The difference in the voltage potential of the Kelvin sense lead from the gate and the Kelvin sense le...	05/31/2011
7948296	Method and apparatus for driving a power MOS device as a synchronous rectifier A synchronous rectifier comprising a MOSFET device, and a gate driver for driving the gate of the MOSFET device, the MOSFET device comprising first and second MOSFET transistors coupled with their drain-source paths in parallel to receive an alternating current wave...	05/24/2011
7944267	Leakage current detection circuit and leakage current comparison circuit A leakage current measurement circuit measuring a substrate leakage current and a gate leakage current in response to a variation in the size of an MOS transistor and a leakage current comparison circuit judging which one of the substrate leakage current and the gat...	05/17/2011
7928794	Method and apparatus for a dynamically self-bootstrapped switch A dynamically self-bootstrapping circuit for a switch features a resistor in series with the control node of the switch. A bypass switch connects a control node to ground. When the switch is in an off-state, the bypass switch is enabled. ...	04/19/2011
7924084	Semiconductor device A switching transistor has its drain and source respectively connected to a gate and a source of an output transistor for supplying output current to a load, and its gate connected to an internal grounding wire GW to be connected to a grounding terminal GND. A resis...	04/12/2011
7915946	Switch circuit for high frequency signals wherein distortion of the signals are suppressed A high-frequency switch circuit includes: a switch section comprised of a field effect transistor having a plurality of bias circuits and a potential generating circuit for generating bias voltages from a control signal and supplying them to the bias circuits. The f...	03/29/2011
7893750	Electrical component having configurable characteristics that are non-volatile A component with a functionally-configurable circuit arrangement, has a first switch group with a voltage-dependent switching on or off of a data line and at least one second switch group generating two discrete output voltages separated by an increase in voltage an...	02/22/2011
7852137	Normally-off electronic switching device for on-off control of electric circuit A device capable of bidirectional on-off switching control of an electric circuit. Included is a normally-on HEMT connected between a pair of terminals of the device. A normally-off MOSFET of relatively low antivoltage strength is connected between the HEMT and one ...	12/14/2010
7852136	Bias network A network having a current mirror comprising: a output transistor having a gate electrode for controlling a first current between a first electrode and a second electrode, the first electrode being coupled to a positive reference potential and the second electrode b...	12/14/2010
7821319	Switching apparatus and method for detecting an operating state A switching apparatus and method for detecting an operating state is disclosed. One embodiment has a MOS transistor, a replica of the MOS transistor and an evaluation arrangement and detects the start of switching of the MOS transistor by comparing the gate-source v...	10/26/2010
7795949	Circuit for switching a voltage-controlled transistor A circuit including a voltage-controlled transistor to be switched. A first transistor is switched on, mediated by a control signal, and a first current flows through a series circuit and starts to subject a control input of the voltage-controlled transistor to char...	09/14/2010
7786789	Monolithic integrated circuit and use of a semiconductor switch A monolithic integrated circuit is provided that includes a semiconductor switch, a constant current source, a capacitor, and a load circuit, which has a load capacitance. An output of the semiconductor switch is connected to the load circuit to turn on and off a su...	08/31/2010
7782118	Gate drive for wide bandgap semiconductor device A gate drive circuit for a wide bandgap semiconductor junction gated transistor includes a gate current limit resistor. The gate current limit resistor is coupled to a gate input of the wide bandgap semiconductor junction gated transistor when in use and limits a ga...	08/24/2010
7760007	Low voltage analog CMOS switch A CMOS analog switch circuit includes an NMOS switch transistor, a PMOS switch transistor, and a bias circuit. In an embodiment, the bias circuit includes a first and a second native bias transistors having their gate terminals coupled to a first and a second termin...	07/20/2010
7755414	Very low power consumption solid state relay A normally closed solid state power relay with an optionally optically coupled input circuit at an input terminal with a driver circuit electrically coupled to input terminal to drive one or more a power transistors, preferably MOSFET transistors so that the power t...	07/13/2010
7746157	Electric circuit A transistor has variation in a threshold voltage or mobility due to accumulation of factors such as variation in a gate insulating film which is caused by a difference of a manufacturing process or a substrate to be used and variation in a crystal state of a channe...	06/29/2010
7746156	Circuit and method for driving a junction field effect transistor A circuit and method for driving a field effect transistor is disclosed. A switching circuit includes a driver device having a signal input, a supply voltage input, and an output. The driver output is coupled to a JFET. A converter couples to the JFET and provides a...	06/29/2010
7741895	Semiconductor switch circuit having MOS transistors with low current consumption A semiconductor switch circuit is provided that enables current consumption to be reduced even in a conduction state. A semiconductor switch circuit 100 has P-type MOS transistors Q101 and Q102 for conduction that share a source and are connecte...	06/22/2010
7741896	High voltage drive circuit employing capacitive signal coupling and associated devices and methods According to one embodiment, there is provided a high voltage drive circuit comprising drive and sense electrodes formed substantially in a single plane. The device effects signal transfer between drive and receive circuits through the drive and sense electrodes by ...	06/22/2010
7741894	Output circuit An output circuit having an output transistor which switches a load current is disclosed. The output circuit includes a load current detecting block which detects a current level of the load current, and a slew rate adjustment block which adjusts a slew rate during ...	06/22/2010
7737762	Solid-state switch A solid state switch that employs a controller driven input and MOSFET power switching devices is disclosed. The controller can test for a short-circuit on the load side of the MOSFET power switching devices before putting the switch in a sustained conductive state....	06/15/2010
7733157	Noise-reducing transistor arrangement Noise-reducing transistor arrangement having first and second field effect transistors (FETs) having source terminals coupled together, drain terminals coupled together, and control terminals for application of a first or second signal. A clock generator unit is con...	06/08/2010
7724067	Enhanced transmission gate A body switch system includes a timing module that generates a plurality of clock signals, an input node that receives an input signal, an output node that transmits an output signal; and a body switch circuit that selectively couples a body of a first transistor of...	05/25/2010
7724066	Switching circuit using closed control loop to precharge gate of switching transistor and stable open loop to switch the switching transistor A switching circuit that transitions using a switch transistor. During the initial stages of a high-low transition, a control loop provides supplemental pre-charge to the gate of the switch transistor to reduce high-low switching delays. Once the current flowing thr...	05/25/2010

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Class 327/427 - Field-effect transistor