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| Application No. | Application Title | Issue Date |
| 20120068772 | FIELD MODULATING PLATE AND CIRCUIT Consistent with various example embodiments, a field-controlling electrode applies a negative bias, relative to a source/drain electrode, increase voltage breakdown. The field-controlling electrode is located over a channel region and between source and drain electrodes... | 03/22/2012 |
| 20120049963 | AMPLIFYING CIRCUIT The first emitter follower circuit and the second emitter follower circuit can increase an input impedance on the side of the inverting input terminal in the amplifying circuit. As a result, when a feedback circuit is connected between the inverting input terminal and t... | 03/01/2012 |
| 20120049956 | Amplifiers and related biasing methods and devices Biasing methods and devices for amplifiers are described. The described methods generate bias voltages proportional to the amplifier output voltage to control stress voltages across transistors used within the amplifier.... | 03/01/2012 |
| 20120049895 | AMPLIFYING CIRCUIT AND CURRENT-VOLTAGE CONVERSION CIRCUIT An amplifying circuit comprises: a first transistor, a second transistor, a third transistor and a fourth transistor provided to an input stage; and a first bias circuit. The input signal is input into a control terminal of the first transistor and a control terminal of... | 03/01/2012 |
| 20120044022 | DYNAMIC DEVICE SWITCHING (DDS) OF AN IN-PHASE RF PA STAGE AND A QUADRATURE-PHASE RF PA STAGE An in-phase radio frequency (RF) power amplifier (PA) stage and a quadrature-phase RF PA stage are disclosed. The in-phase RF PA stage includes a first group of arrays of amplifying transistor elements and the quadrature-phase RF PA stage includes a second group of arra... | 02/23/2012 |
| 20120034956 | SYSTEM AND METHOD FOR BIASING A POWER AMPLIFIER A system and method for biasing a power amplifier includes a power amplifier having a driver stage and an output stage, the driver stage having a plurality of driver devices, a bias current source configured to deliver a bias current to each of the plurality of driver d... | 02/09/2012 |
| 20120032744 | POWER AMPLIFIER A power amplifier comprises: an amplifier transistor; a bias circuit supplying bias current to the amplifier transistor; and a collector voltage terminal connected to a collector of the amplifier transistor. The bias circuit includes: a reference voltage terminal into w... | 02/09/2012 |
| 20120001696 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE A semiconductor integrated circuit device constituting an inverting amplifier employs a cascode current source as a current source. In the semiconductor integrated circuit device, a high-potential-side transistor of the cascode current source and a low-potential-side tr... | 01/05/2012 |
| 20110316635 | TRIPLET TRANSCONDUCTOR To reduce a knee voltage of a Darlington amplifier, a negative voltage is applied by a depletion mode FET between the emitter of one amplifying transistor and the base of another amplifying transistor to provide a reduced potential, which reduces the knee voltage of the... | 12/29/2011 |
| 20110316634 | HIGH SPEED LOW POWER MULTIPLE STANDARD AND SUPPLY OUTPUT DRIVER A multi-mode driver and method therefore includes a plurality of amplifiers, an adjustable load block, and adjustable current supply circuitry that selectively adjusts current magnitudes supplied to at least one of the plurality of amplifiers. The multi-mode driver can ... | 12/29/2011 |
| 20110304399 | Driver amplifier circuit and communication system Disclosed herein is a driver amplifier circuit, including: a first current source transistor of a first conductivity type, and a second current source transistor of the first conductivity type, control voltages being supplied to gates of the first current source transis... | 12/15/2011 |
| 20110304401 | Bi-Directional and Adjustable Current Source A Bi-Directional and Adjustable Current Source (“BACS”) for providing an input voltage to a mute/standby control pin of a power stage integrated circuit (“IC”) of an amplifier input with a voltage signal that is linear, where an output of the BACS and the input ... | 12/15/2011 |
| 20110304395 | POWER AMPLIFIER Disclosed is a power amplifier. A power amplifier according to an aspect of the invention may include: a first amplification section having a first N metal oxide semiconductor (MOS) amplifier and a second N MOS amplifier connected in a cascode configuration and amplifyi... | 12/15/2011 |
| 20110298643 | ADAPTIVE BIAS CURRENT GENERATOR METHODS AND APPARATUS In one aspect, a method of reducing power consumption in a circuit by adaptive bias current generation of a bias current configured to bias, at least in part, at least one amplifier of the circuit is provided. The method comprises establishing the bias current based, at... | 12/08/2011 |
| 20110298545 | RF POWER AMPLIFIER DEVICE AND OPERATING METHOD THEREOF An RF power amplifier device includes a driver stage amplifier, a first RF amplifier, a second RF amplifier and a DC voltage converter operated by first, second and third external power supply voltages. The output of the driver stage amplifier is supplied to the inputs ... | 12/08/2011 |
| 20110293115 | DYNAMICALLY BIASED AMPLIFIER An amplifier including an input stage, an output stage, an adjustable bias current generator and a level detector. The input stage may receive and amplify or buffer an input signal. The input stage may be biased by a first bias current. The output stage may supply an ou... | 12/01/2011 |
| 20110293293 | TRANS-IMPEDANCE AMPLIFIER WITH VARIABLE BANDWIDTH AND DIGITAL COHERENT OPTICAL RECEIVER INSTALLING THE SAME A trans-impedance amplifier (TIA) with an adjustable bandwidth is disclosed. The TIA of the present invention includes the amplifying stage and the emitter follower stage arranged in the downstream of the amplifying stage. The transistor in the amplifying stage includes... | 12/01/2011 |
| 20110279185 | METHOD AND SYSTEM FOR PROVIDING AUTOMATIC GATE BIAS FOR FIELD EFFECT TRANSISTORS The present invention provides a feedback gate bias circuit for use in radio frequency amplifiers to more effectively control operation of LDFET, GaNFET, GaAsFET, and JFET type transistors used in such circuits. The invention provides a transistor gate bias circuit that... | 11/17/2011 |
| 20110260798 | SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE A semiconductor integrated circuit device includes: a substrate which has a first conductivity type and in which a first amplifier area and a second amplifier area are defined; a first well which has a second conductivity type, a first pocket well which has the first co... | 10/27/2011 |
| 20110254630 | POWER AMPLIFIER PROTECTION A power amplifier, for example a class-E switching power amplifier, and corresponding method, comprising: a plurality of power transistors (16), for example twelve power transistors, providing a partitioned power transistor; and a voltage sensing module (22 | 10/20/2011 |
| 20110241783 | DETECTOR CIRCUIT AND SYSTEM FOR A WIRELESS COMMUNICATION Provided are a detector circuit which has a simple circuit configuration, is capable of indicating an accurate power according to a load fluctuation of a radio frequency power amplifier or a difference in a modulation mode, and can be easily incorporated in the radio fr... | 10/06/2011 |
| 20110234322 | APPARATUS AND METHOD FOR REDUCING CURRENT NOISE An input bias current cancellation circuit includes reference transistors placed in series and a current summation network. The current summation network can be configured to sum the base currents of the reference transistors to produce a summed current. A current mirro... | 09/29/2011 |
| 20110227654 | POWER AMPLIFYING APPARATUS AND POWER AMPLIFYING METHOD A power amplifying apparatus according to an embodiment includes a first amplifying unit having a first amplifying element to amplify an input signal, a second amplifying unit having a second amplifying element to amplify an output signal from the first amplifying unit;... | 09/22/2011 |
| 20110204981 | BIAS CIRCUIT AND AMPLIFIER PROVIDING CONSTANT OUTPUT CURRENT FOR A RANGE OF COMMON MODE INPUTS Bias circuits, amplifiers and methods are provided, such as those for providing bias signals over a range of common mode inputs for an amplifier to output a constant current. One example of a bias circuit is configured to generate a bias signal having a voltage magnitud... | 08/25/2011 |
| 20110204977 | SOLID-STATE IMAGE PICKUP APPARATUS AND DRIVING METHOD THEREFOR An apparatus according to an embodiment of the present invention includes a conversion unit configured to generate electric charge, a first amplification unit configured to amplify a signal corresponding to an amount of the electric charge and output a first amplified s... | 08/25/2011 |
| 20110193636 | LINEARIZATION CIRCUITS AND METHODS FOR POWER AMPLIFICATION Linearization circuits of the invention are used in conjunction with power amplification circuits that comprise a power amplifier core. Exemplary linearization circuits comprise a replica of the power amplifier core. In operation, the linearization produces an envelope ... | 08/11/2011 |
| 20110193635 | WIDE BAND LNA WITH NOISE CANCELING Techniques to improve low noise amplifiers (LNAs) with noise canceling are described. LNA includes a first and a second amplifier which work together to noise cancel the noise generated at an input stage circuit. The input stage circuit receives an RF signal and is char... | 08/11/2011 |
| 20110187459 | EMITTER-FOLLOWER TYPE BIAS CIRCUIT An emitter-follower bias circuit supplying a bias voltage to the base of an amplification transistor includes: a depletion mode FET boosting a reference voltage; and an emitter-follower circuit generating the bias voltage in response to the reference voltage boosted by ... | 08/04/2011 |
| 20110182129 | SENSE AMPLIFIER HAVING LOOP GAIN CONTROL Memories, sense amplifiers, and methods for amplifying a current input are disclosed, including a sense amplifier including a bias circuit configured to provide a bias voltage having a magnitude responsive to maintaining a substantially constant loop gain, and further i... | 07/28/2011 |
| 20110175681 | RADIO FREQUENCY POWER AMPLIFIER AND WIRELESS COMMUNICATION DEVICE INCLUDING THE SAME To provide a radio frequency power amplifier that realizes a favorable high-frequency characteristic without using an isolator and also achieves low power consumption. The radio frequency power amplifier includes: a power amplifier which amplifies a radio frequency sign... | 07/21/2011 |
| 20110169573 | AMPLIFIER CIRCUIT WITH STEP GAIN A step gain amplifier has an amplifier with an input and an output, and a bias circuit connected to the input and to a bias node. A passive feedback circuit using only passive elements connects the output to the input. A control circuit is connected to the bias circuit ... | 07/14/2011 |
| 20110163808 | AMPLIFIER WITH IMPROVED INPUT RESISTANCE AND CONTROLLED COMMON MODE An amplifier includes a first pair of transistors (the first pair) that defines a first output, each transistor of the first pair having a gate coupled to a first input terminal; a second pair of transistors (the second pair) that defines a second output, each transisto... | 07/07/2011 |
| 20110156819 | Low-Noise High Efficiency Bias Generation Circuits and Method A bias generation method or apparatus defined by any one or any practical combination of numerous features that contribute to low noise and/or high efficiency biasing, including: having a charge pump control clock output with a waveform having limited harmonic content o... | 06/30/2011 |
| 20110133838 | LOW OUTPUT IMPEDANCE RF AMPLIFIER A radio frequency (RF) power amplifier includes a low impedance pre-driver driving the input of a common-source output amplifier stage. The preamplifier includes a first transistor that has a first terminal coupled to a preamplifier RF input node, a second terminal coup... | 06/09/2011 |
| 20110133842 | RADIO-FREQUENCY AMPLIFIER A radio-frequency amplifier includes a common gate amplification stage configured to be biased in a saturation condition with a first current and configured to receive an input signal as a gate-source voltage and to generate an output voltage as an amplified replica of ... | 06/09/2011 |
| 20110102058 | CIRCUIT FOR GENERATING A REFERENCE VOLTAGE An embodiment of a bandgap voltage reference circuit for generating a bandgap voltage reference. Said embodiment comprises a current generator controlled by a first driving voltage for generating a first current depending on the driving voltage, and a first reference ci... | 05/05/2011 |
| 20110090011 | POWER AMPLIFIER An adaptive bias power amplifier including an amplifier, a signal coupler, a power detector and a bias control circuit is provided. The signal coupler is connected to an input terminal of the amplifier. The power detector is connected to the signal coupler, and detects ... | 04/21/2011 |
| 20110090014 | Switched active bias control and power-on sequencing circuit for an amplifier An active bias control circuit for an amplifier includes a switch responsive to a supply voltage for providing an input current to the input of the amplifier, and a current sense circuit coupled to the switch for sensing a scaled down replica of the input current to the... | 04/21/2011 |
| 20110090013 | FIELD-EFFECT TRANSISTOR AMPLIFIER A field-effect transistor amplifier is provided, which can maintain excellent RF characteristics and, at the same time, can improve current variation. The field-effect transistor amplifier according to the present invention comprises a field-effect transistor which ampl... | 04/21/2011 |
| 20110090012 | CIRCUIT AND METHOD FOR RADIO FREQUENCY AMPLIFIER A radio frequency amplifier circuit includes a substrate that is capable of receiving a substrate bias voltage. The source of a transistor is capable of receiving a source bias voltage. The drain of the transistor is capable of receiving a drain bias voltage. The gate o... | 04/21/2011 |
