patentstorm.us 258 85 http://www.patentstorm.us/ http://www.patentstorm.us/images/logo.gif PatentStorm -> Applications -> Amplifiers http://www.patentstorm.us/rss/class/applications/rss-330.xml Recent patent applications filings in USPTO Class 330 Amplifiers. Thu, 18 Mar 2010 15:05:02 patents@patentstorm.us en <![CDATA[METHOD AND APPARATUS FOR PREDISTORTING A WAVEFORM FOR INPUT TO AN AMPLIFIER]]> http://www.patentstorm.us/applications/20100069023/description.html
  • Application Number:  20100069023
  • Publication Date:  2010-03-18
  • Inventors:  Coan, Philip David; Draxler, Paul Joseph
    • A method of predistorting a waveform for input to an amplifier includes receiving information associated with the waveform, the information comprising a modulation configuration of the waveform. The method further includes predicting a chain model for the waveform based on the modulation configuration. In addition, the method includes predistorting the waveform for input to the amplifier, based on the chain model, an ideal waveform, and target output power. An apparatus is also provided for ...
    ]]>     20100069023     <![CDATA[Sub Volt Flash Memory System]]> http://www.patentstorm.us/applications/20100067308/description.html
  • Application Number:  20100067308
  • Publication Date:  2010-03-18
  • Inventors:  Ly, Anh; Nguyen, Hung Q.; Tran, Hieu Van; Nguyen, Sang T.
    • Various circuits include MOS transistors that have a bulk voltage terminal for receiving a bulk voltage that is different from a supply voltage and ground. The bulk voltage may be selectively set so that some MOS transistors have a bulk voltage set to the supply voltage or ground and other MOS transistors have a bulk voltage that is different. The bulk voltage may be set to forward or reverse bias pn junctions in the MOS transistor. The various circuits include comparators, operational ...
    ]]>     20100067308     <![CDATA[HIGH-POWER COMMON-BASE AMPLIFIER EMPLOYING CURRENT SOURCE OUTPUT BIAS]]> http://www.patentstorm.us/applications/20100066454/description.html
  • Application Number:  20100066454
  • Publication Date:  2010-03-18
  • Inventors:  Ma, Zhenqiang; Wang, Guogong; Qin, Guoxuan
    • A common-base amplifier for a bipolar junction transistor or a heterojunction bipolar transistor employs an active current source output biasing to provide for improved power output in a power saturation region providing increased power for a given transistor area such as may be advantageous in mobile radio transmitters or the ...
    ]]>     20100066454     <![CDATA[AMPLIFIER WITH COMPENSATED GATE BIAS]]> http://www.patentstorm.us/applications/20100066453/description.html
  • Application Number:  20100066453
  • Publication Date:  2010-03-18
  • Inventors:  Busking, Erik Bert; de Hek, Andries Peter
    • An amplifier circuit has an amplifier stage (10), comprising an amplifier transistor (104) with a gate coupled to an input (100) of the amplifier stage (10), a source coupled to a reference connection (gnd) and a drain coupled to a positive power supply connection (V+). A bias stage (12) is provided comprising a bias transistor (120), a drain resistance (124) and a source resistance (122), the bias transistor (120) having a gate ...
    ]]>     20100066453     <![CDATA[WIDEBAND LOW-NOISE AMPLIFIER]]> http://www.patentstorm.us/applications/20100066452/description.html
  • Application Number:  20100066452
  • Publication Date:  2010-03-18
  • Inventors:  Kawashima, Munenari; Yamaguchi, Yo; Uehara, Kazuhiro; Nishikawa, Kenjiro
    • A wideband low-noise amplifier of the present invention is designed such that an input terminal is connected to a base of a first transistor, one terminal of a first passive element, and one terminal of a third passive element; an emitter of the first transistor is grounded; a collector of the first transistor is connected to an output terminal, a base of a second transistor, one terminal of a capacitor, and one terminal of a second passive element; the other terminal of the first passive ...
    ]]>     20100066452     <![CDATA[Compound semiconductor device and doherty amplifier using compound semiconductor device]]> http://www.patentstorm.us/applications/20100066451/description.html
  • Application Number:  20100066451
  • Publication Date:  2010-03-18
  • Inventors:  Kikkawa, Toshihide; Imanishi, Kenji
    • A lower electron supply layer is disposed over a lower electron transport layer made of compound semiconductor. The lower electron supply layer is made of n-type compound semiconductor having an electron affinity smaller than that of the lower electron transport layer. An upper electron transport layer is disposed over the lower electron supply layer. The upper electron transport layer is made of compound semiconductor having a doping concentration lower than that of the lower electron supply ...
    ]]>     20100066451     <![CDATA[High-Speed Low-Power Differential Receiver]]> http://www.patentstorm.us/applications/20100066450/description.html
  • Application Number:  20100066450
  • Publication Date:  2010-03-18
  • Inventors:  Poulton, John W.; Palmer, Robert E.
    • A low-voltage differential communication system includes a low- and programmable-swing voltage-mode transmitter that delivers a low-voltage differential signal to a receiver via differential channel. The receiver employs two input transistors, each in a common-gate configuration, to recover the low-voltage differential signal. A current source in the receiver biases the input transistors such that their source voltages are nominally biased at the common-mode voltage of the differential signal, ...
    ]]>     20100066450     <![CDATA[THREE-STAGE FREQUENCY-COMPENSATED OPERATIONAL AMPLIFIER FOR DRIVING LARGE CAPACITIVE LOADS]]> http://www.patentstorm.us/applications/20100066449/description.html
  • Application Number:  20100066449
  • Publication Date:  2010-03-18
  • Inventor:  Dasgupta, Uday
    • A three-stage frequency-compensated operational amplifier includes a first-stage circuit, a second-stage circuit incorporated with a first compensation circuit, a third-stage circuit, and a second compensation circuit. The three-stage frequency-compensated operational amplifier functions as a two-stage operational amplifier at high frequencies, thereby capable of driving large capacitive loads with low power ...
    ]]>     20100066449     <![CDATA[DEVICE UNDER TEST POWER SUPPLY]]> http://www.patentstorm.us/applications/20100066448/description.html
  • Application Number:  20100066448
  • Publication Date:  2010-03-18
  • Inventors:  Bristow, Steven R.; Sullivan, Patrick G.; Creek, William Robert; King, Jeffrey Allen
    • A power supply with and input and output includes an amplifier configured to set an output voltage of the power supply output equal to a fixed input voltage for the power supply. The power supply has a first output stage coupled to the amplifier and configured to source and sink current at the output of the power supply between a first voltage rail and a third voltage rail. The power supply has a second output stage coupled to the amplifier and configured to source and sink current to the ...
    ]]>     20100066448     <![CDATA[FILTER COMPENSATION FOR SWITCHING AMPLIFIERS]]> http://www.patentstorm.us/applications/20100066447/description.html
  • Application Number:  20100066447
  • Publication Date:  2010-03-18
  • Inventor:  Kirn, Larry
    • Embodiments of the present invention provide methods and systems for limiting bipolar current flow in a switching amplifier. Embodiments of the present invention are directed to a multi-referenced switching amplifier. In some embodiment, the switching amplifier is a dual referenced switching amplifier comprising a regulator between the two references, where the first reference provides coarse modulation to a load and the second reference provides fine modulation to the load. The dual referenced ...
    ]]>     20100066447     <![CDATA[CLASS-D AMPLIFIER]]> http://www.patentstorm.us/applications/20100066446/description.html
  • Application Number:  20100066446
  • Publication Date:  2010-03-18
  • Inventor:  Basten, Roland
    • The invention describes a power amplifier comprising a first transistor (MHS) having a first control terminal and a first main current path coupled between a first supply terminal (Vdd) and a first node (VH), a second transistor (MLS) having a second control terminal and a second main current path coupled between a second supply terminal (Vss) and a second node (VL), a first controlled resistor (MHC) coupled between the first node and an output node ...
    ]]>     20100066446     <![CDATA[POWER AMPLIFIER, METHOD FOR CONTROLLING POWER AMPLIFIER, AND WIRELESS COMMUNICATION APPARATUS]]> http://www.patentstorm.us/applications/20100066445/description.html
  • Application Number:  20100066445
  • Publication Date:  2010-03-18
  • Inventor:  Asano, Hiroyuki
    • A power amplifier includes: a distortion compensating circuit that causes a bias circuit to have an output impedance so that a subsequent block bipolar transistor for signal amplification-use has a maximized saturated output power; and a distortion compensating circuit that causes a bias circuit to have an output impedance so that a distortion of an output power of the power amplifier 1 with respect to an input power is canceled by a distortion characteristic of an output power with ...
    ]]>     20100066445     <![CDATA[WIDE-RANGE AND HIGH-RESOLUTION PROGRAMMABLE GAIN AMPLIFIER]]> http://www.patentstorm.us/applications/20100066444/description.html
  • Application Number:  20100066444
  • Publication Date:  2010-03-18
  • Inventors:  Chen, Hung-Wei; Chao, Po-Yin
    • A first gain stage and a second gain stage having different gains are linked in cascade to construct a wide range and high resolution programmable gain amplifier. The second gain stage can be used only for low gain and low power consumption. Furthermore, two pairs of chopper circuits are used to shift flicker noise when the programmable gain amplifier is ...
    ]]>     20100066444     <![CDATA[Amplification Circuit and Hearing Aid]]> http://www.patentstorm.us/applications/20100061576/description.html
  • Application Number:  20100061576
  • Publication Date:  2010-03-11
  • Inventors:  Killion, Mead C.; Johnson, William A.
    • Certain embodiments of the present technology provide improved amplification circuits and hearing aids that can utilize such amplification circuits. In an embodiment, for example, an amplification circuit includes: a first sub circuit configured to create a voltage drop when a supply voltage is above a first voltage; and a second sub circuit configured to create a reverse voltage drop when the supply voltage is below a second voltage, wherein the first and second sub circuits operate to ...
    ]]>     20100061576     <![CDATA[CURRENT CANCELING VARIABLE GAIN AMPLIFIER AND TRANSMITTER USING SAME]]> http://www.patentstorm.us/applications/20100061481/description.html
  • Application Number:  20100061481
  • Publication Date:  2010-03-11
  • Inventors:  Akhtar, Siraj; Litmanen, Petteri Matti
    • A current canceling CMOS variable gain amplifier includes a first leg and a second leg. The first leg has a first input line, a first output line, a first ON transistor, a first control transistor and a first subtracting transistor. The second leg has a second input line, a second output line, a second ON transistor, a second control transistor and a second subtracting transistor. The second input line can provide a second input current. The second output line can provide a second output ...
    ]]>     20100061481     <![CDATA[WIDEBAND LOW-NOISE AMPLIFIER]]> http://www.patentstorm.us/applications/20100060363/description.html
  • Application Number:  20100060363
  • Publication Date:  2010-03-11
  • Inventors:  Han, Seon Ho; Cheon Soo, Kim; Jae Young, Kim; Hyun Kyu, Yu
    • A wideband low-noise amplifier includes a source-degenerated common-source amplifier, a common-gate amplifier, and a matching frequency band determiner. The source-degenerated common-source amplifier is configured to amplify an input signal to output a first signal that is opposite in phase to the input signal. The common-gate amplifier is connected in parallel to the source-degenerated common-source amplifier to amplify the input signal to output a second signal that has the same phase as the ...
    ]]>     20100060363     <![CDATA[CASCODE CIRCUIT]]> http://www.patentstorm.us/applications/20100060362/description.html
  • Application Number:  20100060362
  • Publication Date:  2010-03-11
  • Inventors:  KANAYA, Ko; WATANABE, Shinsuke; GOTO, Seiki
    • A cascode circuit for a high-gain or high-output millimeter-wave device that operates with stability. The cascode circuit including two cascode-connected transistors includes: a first high electron mobility transistor (HEMT) including a source that is grounded; a second HEMT including a source connected to a drain of the first HEMT; a reflection gain restricting resistance connected to the gate of the second HEMT, for restricting reflection gain; and an open stub connected to a side of the ...
    ]]>     20100060362     <![CDATA[BIAS BALANCING CIRCUIT]]> http://www.patentstorm.us/applications/20100060361/description.html
  • Application Number:  20100060361
  • Publication Date:  2010-03-11
  • Inventor:  Lin, Wei-Cheng
    • The invention discloses a bias balancing circuit. The bias balancing circuit is used for balancing an output voltage outputted by an amplifier module. The amplifier module has a variable gain. The bias balancing circuit comprises a comparator and a voltage selector. The comparator is used for comparing the output voltage and a reference voltage, to generate a comparison signal. The voltage selector is used for generating a selected voltage according to the comparison signal. When the variable ...
    ]]>     20100060361     <![CDATA[SWITCH-LESS BIDIRECTIONAL AMPLIFIER]]> http://www.patentstorm.us/applications/20100060360/description.html
  • Application Number:  20100060360
  • Publication Date:  2010-03-11
  • Inventors:  Berg, Hakan; Thiesies, Heiko
    • A bi-directional amplifier, transceiver, integrated circuit, mobile unit, telecommunication infrastructure for amplification of signals received or signals to be transmitted in a communication circuit and a method for bi-directional amplification comprising amplifying signals in a bi-directional amplifier and directing a signal between two or more different paths comprising at least one first biased semiconductor amplification element coupled to a at least one first impedance matching network, ...
    ]]>     20100060360     <![CDATA[Low Headroom X-Bridge Transconductor]]> http://www.patentstorm.us/applications/20100060359/description.html
  • Application Number:  20100060359
  • Publication Date:  2010-03-11
  • Inventors:  D'Aquino, Stefano; Herrera, Sandro
    • A transconductance cell includes a positive rail for providing a positive power supply voltage and a negative rail for providing a negative power supply voltage. A pair of voltage inputs, one inverting and one non-inverting, develop a differential voltage input signal having a common mode voltage range from one of the rail voltages to within a volt or less of the other rail voltage. And a pair of cross-coupled transconductor circuits each have: (i.) a source voltage follower responsive to one ...
    ]]>     20100060359     <![CDATA[Compensating for variations in the response of a power supply]]> http://www.patentstorm.us/applications/20100060358/description.html
  • Application Number:  20100060358
  • Publication Date:  2010-03-11
  • Inventor:  NENTWIG, Markus
    • Apparatus includes an equalizer having a signal input, a control input and an output; a controllable power supply having a control input and an output, the input of the controllable power supply being coupled to the output of the equalizer; a power amplifier having a main signal input, a power supply input, and an output, the power supply input being coupled to the output of the controllable power supply; and a controller having first and second inputs and an output, the first input being ...
    ]]>     20100060358     <![CDATA[RF POWER AMPLIFIER SYSTEM WITH IMPEDANCE MODULATION]]> http://www.patentstorm.us/applications/20100060357/description.html
  • Application Number:  20100060357
  • Publication Date:  2010-03-11
  • Inventors:  Drogi, Serge Francois; Vinayak, Vikas
    • A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction ...
    ]]>     20100060357     <![CDATA[POWER SERIES PREDISTORTER AND CONTROL METHOD THEREOF]]> http://www.patentstorm.us/applications/20100060356/description.html
  • Application Number:  20100060356
  • Publication Date:  2010-03-11
  • Inventors:  Narahashi, Shoichi; SUZUKI, Yasunori; Ohkawara, Jyunya
    • A power series predistorter of the present invention includes a delay path for delaying a signal, a distortion generation path having an N-th order distortion generator and a vector adjuster, a divider for dividing an input signal between the delay path and the distortion generation path, a combiner for combining the output signal of the delay path and the output signal of the distortion generation path, and a controller for controlling the vector adjuster. The controller includes a setting ...
    ]]>     20100060356     <![CDATA[APPARATUS AND METHOD OF COMPENSATING DISTORTION]]> http://www.patentstorm.us/applications/20100060355/description.html
  • Application Number:  20100060355
  • Publication Date:  2010-03-11
  • Inventors:  FUDABA, Nobukazu; ISHIKAWA, Hiroyoshi; HAMADA, Hajime; UTSUNOMIYA, Yuichi; NAGATANI, Kazuo; SHAKO, Hideharu
    • A distortion compensating apparatus includes a processing circuit that calculates each of a plurality of series operation coefficient pairs based on a transmission signal and a feedback signal of an output from an amplifying circuit performing power amplification of the transmission signal, executes a series operation process with respect to the transmission signal based on the plurality of the series operation coefficient pairs as a distortion compensation of the transmission signal, and ...
    ]]>     20100060355     <![CDATA[AMPLIFICATION CIRCUIT]]> http://www.patentstorm.us/applications/20100060354/description.html
  • Application Number:  20100060354
  • Publication Date:  2010-03-11
  • Inventor:  Maeda, Tadashi
    • The present invention is aimed at realizing an amplifying circuit whose chip size is prevented from being significantly increased even if the number of compatible frequencies increases, and which has a wide dynamic range when it operates under a low voltage. The amplifying circuit includes a plurality of impedance converting circuits connected to each other by a switching circuit of a first type having a signal cutting-off function, a switching circuit of a second type connected to a path ...
    ]]>     20100060354     <![CDATA[Power amplifier linearization using RF feedback]]> http://www.patentstorm.us/applications/20100060353/description.html
  • Application Number:  20100060353
  • Publication Date:  2010-03-11
  • Inventors:  Pivit, Florian; Grebennikov, Andrei
    • The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in ...
    ]]>     20100060353     <![CDATA[Auto-correction feedback loop for offset and ripple suppression in a chopper-stabilized amplifier]]> http://www.patentstorm.us/applications/20100060352/description.html
  • Application Number:  20100060352
  • Publication Date:  2010-03-11
  • Inventors:  Botker, Thomas L.; Kusuda, Yoshinori
    • A chopper-stabilized amplifier includes a main signal path having first and second chopping circuits at the inputs and outputs of a transconductance amplifier, and an auto-correction feedback loop. The feedback loop includes a transconductance amplifier connected to amplify the chopped output from the main signal path, a third chopping circuit which chops the amplified output, a filter which filters the chopped output to substantially reduce any offset voltage-induced AC component present in ...
    ]]>     20100060352     <![CDATA[COMMUNICATION SYSTEM WITH FREQUENCY-ADAPTIVE PREDISTORTER DESIGN]]> http://www.patentstorm.us/applications/20100056082/description.html
  • Application Number:  20100056082
  • Publication Date:  2010-03-04
  • Inventors:  Chuang, Wei-Ping; Chiu, Mao-Ching
    • A communication system comprises a predistorter for distorting an input signal according to at least one parameter to generate a distorted signal, an amplifier for amplifying the distorted signal according to an input-output characteristic to generate an output signal, and a frequency-domain adaptive calibration module for adaptively adjusting the parameter of the predistorter according to a frequency characteristic of the output signal. Because the calibration is performed in the frequency ...
    ]]>     20100056082     <![CDATA[Controlled RF Active Duplexer]]> http://www.patentstorm.us/applications/20100052814/description.html
  • Application Number:  20100052814
  • Publication Date:  2010-03-04
  • Inventors:  Dueme, Philippe; Mallet-Guy, Benoit; Plaze, Jean-Philippe
    • A controlled RF active duplexer comprises two distributed amplifiers and means for controlling them. Each distributed amplifier comprises an input line and an output line, the output line of the first distributed amplifier being common to the input line of the second distributed amplifier. An end of the input line of the first distributed amplifier forms the input port, an end of the output line of the second distributed amplifier forms the output port and an end of the line common to the two ...
    ]]>     20100052814     <![CDATA[METHOD AND APPARATUS FOR ADJUSTING LOAD IMPEDANCE OF A DISTRIBUTED AMPLIFIER]]> http://www.patentstorm.us/applications/20100052809/description.html
  • Application Number:  20100052809
  • Publication Date:  2010-03-04
  • Inventor:  Frei, Jeffrey A.
    • The application discloses a method and apparatus for adjusting internal load impedances, by section, at feed points present on a distributed amplifier's output transmission line. The method includes determining a summing-point load impedance (Zx) at an off-chip output transmission line of the distributed amplifier. The method further includes determining a driving-point load impedance (Zd) at an output of an on-chip power transistor. The driving-point load impedance ...
    ]]>     20100052809     <![CDATA[METHOD AND SYSTEM FOR IMPROVING EFFICIENCY OVER POWER CONTROL FOR LINEAR AND CLASS AB POWER AMPLIFIERS]]> http://www.patentstorm.us/applications/20100052794/description.html
  • Application Number:  20100052794
  • Publication Date:  2010-03-04
  • Inventor:  Rofougaran, Ahmadreza
    • Aspects of a system for improving efficiency over power control for linear and class AB power amplifiers may include a current source circuit that enables determination of a bias current level for a PA circuit within an IC die based on an amplitude of an input modulation signal. The PA circuit may enable generation of an output signal based on a differential input signal and the input modulation signal to the current source circuit. A generated bias voltage may be applied to a transformer ...
    ]]>     20100052794     <![CDATA[Resonant operating mode for a transistor]]> http://www.patentstorm.us/applications/20100052793/description.html
  • Application Number:  20100052793
  • Publication Date:  2010-03-04
  • Inventor:  Park, Larry A.
    • The PN junctions of a transistor are biased for operation in the active mode but an initial flow of current reverses the bias of the base-emitter junction causing the transistor to conduct a resonant current with a voltage less than the forward junction voltage of said ...
    ]]>     20100052793     <![CDATA[AMPLIFYING APPARATUS, METHOD OF OUTPUT CONTROL AND CONTROL PROGRAM]]> http://www.patentstorm.us/applications/20100052792/description.html
  • Application Number:  20100052792
  • Publication Date:  2010-03-04
  • Inventors:  Mizuno, Masayuki; Ishizaki, Haruya; Nose, Koichi
    • [PROBLEMS] To provide, for example, a pulse input type power amplifying apparatus that can be operated at low voltage and low power, effectively suppressing generation of harmonic component.

    [MEANS FOR SOLVING THE PROBLEMS] The amplifying apparatus includes at least two amplification circuits, one and other amplification circuits, composed of multiple amplifiers whose output sides are connected to each other, driven at the same frequency. The multiple amplifiers ...
    ]]> 20100052792 <![CDATA[AMPLIFIER CIRCUIT]]> http://www.patentstorm.us/applications/20100052791/description.html

  • Application Number:  20100052791
  • Publication Date:  2010-03-04
  • Inventors:  Tsunoda, Yukito; Sugawara, Mariko
    • An amplifier circuit including: a multistage amplifier unit including an input-stage transistor and an output-stage transistor and configured to amplify an input signal and to output an amplified signal; and a feedback unit including a first feedback transistor, a second feedback transistor, and a feedback resistor, and configured to feed back the amplified signal to an input of the output-stage transistor in the multistage amplifier unit via the first feedback transistor, the second feedback ...
    ]]>     20100052791     <![CDATA[AMPLIFIER CIRCUIT]]> http://www.patentstorm.us/applications/20100052790/description.html
  • Application Number:  20100052790
  • Publication Date:  2010-03-04
  • Inventors:  Tsunoda, Yukito; Sugawara, Mariko
    • An amplifier circuit includes a first amplifier amplifying an input signal and outputting a first amplified signal, a second amplifier amplifying the first amplified signal and outputting a second amplified signal, and a feedback circuitry feeding back the second amplified signal to the input of the second amplifier. The feedback circuitry includes a feedback transistor that keeps the input level of the second amplifier ...
    ]]>     20100052790     <![CDATA[Power Amplifier With Output Power Control]]> http://www.patentstorm.us/applications/20100052789/description.html
  • Application Number:  20100052789
  • Publication Date:  2010-03-04
  • Inventors:  Zannoth, Markus; Bakalski, Winfried
    • This disclosure relates systems and methods for a power amplifier with output power control. The power amplifier can include multiple stages of amplification. An RF signal is fed to the power amplifier with output control that amplifies the power of the RF signal to meet operational requirements. A first stage of the power amplifier controls the output power via voltage regulation. An isolating device is introduced in the transmission path of the RF signal between the first stage and the ...
    ]]>     20100052789     <![CDATA[BROADBAND MICROWAVE DEVICE WITH SWITCHABLE GAIN]]> http://www.patentstorm.us/applications/20100052788/description.html
  • Application Number:  20100052788
  • Publication Date:  2010-03-04
  • Inventors:  Auric, Claude; Plaze, Jean-Philippe; Dueme, Philippe
    • The invention relates to a broadband microwave device with switchable gain comprising a microwave signal input E and output S, a distributed amplifier with a plurality of amplifying cells comprising an input transmission line for an input signal applied to the microwave signal input E, said input transmission line having one of its two ends linked to the microwave signal input E, an output transmission line for said amplified input signal having an output end of the distributed amplifier, the ...
    ]]>     20100052788     <![CDATA[LIMITING AMPLIFIERS]]> http://www.patentstorm.us/applications/20100052787/description.html
  • Application Number:  20100052787
  • Publication Date:  2010-03-04
  • Inventors:  Lee, Chih-Hung; Liu, Shen-Iuan
    • A limiting amplifier with an input stage with dc offset cancellation, identical gain stages, an output buffer and a feedback filter. The input stage receives a differential input signal and outputs a first intermediate differential signal. The gain stages are cascaded to amplify the first intermediate differential signal and generate a second intermediate differential signal, amplified by the output buffer to produce an output signal. The feedback filter provides a dc offset voltage of the ...
    ]]>     20100052787     <![CDATA[AUTOMATIC GAIN CONTROL APPARATUS AND TECHNIQUE]]> http://www.patentstorm.us/applications/20100052786/description.html
  • Application Number:  20100052786
  • Publication Date:  2010-03-04
  • Inventor:  Cowley, Nicholas P.
    • An amplifier includes steering stages to receive a control signal and collectively provide an output signal. Each steering stage receives an associated input signal and contributes to the output signal based on the control signal. The amplifier includes an attenuator to selectively attenuate the input signals to form different gain control ranges for the ...
    ]]>     20100052786     <![CDATA[DIFFERENTIAL AMPLIFIER, SAMPLE-AND-HOLD CIRCUIT, AND AMPLIFIER CIRCUIT]]> http://www.patentstorm.us/applications/20100052785/description.html
  • Application Number:  20100052785
  • Publication Date:  2010-03-04
  • Inventor:  Ishii, Hirotomo
    • To provide a common-mode feedback circuit that feeds back signal corresponding to common-mode components of output terminal voltage of first and second amplifiers to input terminals of the first and second amplifiers via first and second passive elements connected to a common terminal, ...
    ]]>     20100052785     <![CDATA[LOW NOISE AMPLIFIER]]> http://www.patentstorm.us/applications/20100052784/description.html
  • Application Number:  20100052784
  • Publication Date:  2010-03-04
  • Inventor:  Yamaguchi, Kouichiro
    • A low noise amplifier having a wide operating frequency band and a high dynamic range is provided. A transformer having a secondary winding connected between an input terminal to which an input signal is applied and a positive differential output terminal, and a primary winding connected between a negative differential output terminal and an input node is provided as a feedback circuit between a cascode amplifier circuit, which includes transistors and a resistor, and an output circuit, which ...
    ]]>     20100052784     <![CDATA[CLASS-D AMPLIFIER]]> http://www.patentstorm.us/applications/20100052783/description.html
  • Application Number:  20100052783
  • Publication Date:  2010-03-04
  • Inventors:  PADURE, Marius; LIPCSEI, Laszlo; POPESCU, Serban-Mihai
    • An amplifier that receives an input signal and outputs an amplified output signal includes an integration stage, a comparison stage, and a full bridge circuit. The integration stage is be used for receiving a constant common mode voltage, for receiving a first signal representing the input signal of the amplifier, and for generating a ramp signal. The comparison stage coupled to the integration stage is used for generating a pulse width modulation signal according to the ramp signal and ...
    ]]>     20100052783     <![CDATA[TRANSFORMER AND STRUCTURE THEREOF AND POWER AMPLIFIER]]> http://www.patentstorm.us/applications/20100052782/description.html
  • Application Number:  20100052782
  • Publication Date:  2010-03-04
  • Inventor:  Chen, Cheng-Chung
    • A transformer and a structure thereof and a power amplifier are provided. The transformer includes a first inductor to a fourth inductor, a first capacitor, and a second capacitor. A first terminal of the first inductor receives a first signal. A first terminal of the second inductor is coupled to the first terminal of the first inductor. A first terminal of the third inductor receives a second signal, and a second terminal of the third inductor is coupled to a second terminal of the first ...
    ]]>     20100052782     <![CDATA[Correcting distortions at output of power amplifier]]> http://www.patentstorm.us/applications/20100052781/description.html
  • Application Number:  20100052781
  • Publication Date:  2010-03-04
  • Inventor:  Nentwig, Markus
    • A solution is provided for correcting distortions on a radio frequency output signal of a power amplifier. There is provided an apparatus, comprising: a processor configured to determine at least one correction factor for a distortion on a radio frequency output signal of a power amplifier on the basis of estimated characteristics of a distorted time-varying supply voltage from a power supply to a power amplifier and an interface configured to feed the at least one correction factor to an input ...
    ]]>     20100052781     <![CDATA[METHOD OF AND CIRCUIT FOR REDUCING DISTORTION IN A POWER AMPLIFIER]]> http://www.patentstorm.us/applications/20100052780/description.html
  • Application Number:  20100052780
  • Publication Date:  2010-03-04
  • Inventors:  Dick, Christopher H.; Summerfield, Stephen
    • An integrated circuit having a circuit for reducing distortion in a power amplifier is disclosed. The integrated circuit comprises a predistortion circuit coupled to receive a signal to be amplified; sample capture buffers coupled to an output of the predistortion circuit and an input/output port of the integrated circuit; and an estimator circuit coupled to the sample capture buffers, wherein the estimator circuit generates parameters for the predistortion circuit based upon the output of the ...
    ]]>     20100052780     <![CDATA[DOHERTY AMPLIFIER AND SIGNAL AMPLIFICATION SYSTEM HAVING THE SAME, METHOD FOR AMPLIFYING SIGNAL]]> http://www.patentstorm.us/applications/20100052779/description.html
  • Application Number:  20100052779
  • Publication Date:  2010-03-04
  • Inventors:  SHIN, Jin Ho; HAN, Ki Chon
    • A Doherty amplifier is provided. The Doherty amplifier includes a first path circuit including a carrier amplifier and a first impedance adjusting circuit connected with the carrier amplifier; and a second path circuit including a peaking amplifier, a second impedance adjusting circuit connected with the peaking amplifier, and a peaking amplifier bias circuit connected with the peaking amplifier. At least one among an impedance of the first impedance adjusting circuit, an impedance of the ...
    ]]>     20100052779     <![CDATA[Nth Order Tunable Low-Pass Continuous Time Filter for Fiber Optic Receivers]]> http://www.patentstorm.us/applications/20100052778/description.html
  • Application Number:  20100052778
  • Publication Date:  2010-03-04
  • Inventors:  Elahmadi, Salam; Baranauskas, Dalius; Zelenin, Denis; Bussmann, Matthias
    • According to one embodiment of the invention, a circuit comprising a plurality of operational transconductance amplifiers (OTAS) is described. The first OTA has differential input and differential output. The second OTA also has differential input, where a first output of the first OTA is coupled to the first differential input of the second OTA, which is an inverting input. A second output of the first OTA is coupled to the second input of the second OTA, which is a non-inverting input. The ...
    ]]>     20100052778     <![CDATA[Amplifier with Single-ended Input and Differential Output]]> http://www.patentstorm.us/applications/20100046677/description.html
  • Application Number:  20100046677
  • Publication Date:  2010-02-25
  • Inventor:  Ganeshan, Saravana Kumar
    • An amplifier provided according to an aspect of the present invention includes a set of passive impedances forming a tuned load to a gain stage and also to provide a 180 degrees phase shifted signal of a gain signal received from the gain stage. The output of the gain stage and the 180 degrees phase shifted signal together form a differential amplified signal corresponding to an input signal gained by the gain stage. In an embodiment, the set of passive impedances includes a three terminal ...
    ]]>     20100046677     <![CDATA[OPTICAL RECEIVER-AMPLIFIER]]> http://www.patentstorm.us/applications/20100045387/description.html
  • Application Number:  20100045387
  • Publication Date:  2010-02-25
  • Inventor:  Ohta, Atsunobu
    • There is provided an optical receiver-amplifier wherein the need for a large capacitance capacitor for AC coupling is eliminated to thereby enable miniaturization of a receiver in whole, and output waveforms of a differential limiter amp can be rendered symmetrical with high precision while a transimpedance amp and a limiter amp can be integrated on one chip. The optical receiver-amplifier comprises a photodiode, a transimpedance amp for amplifying an output signal of the photodiode, and a DC ...
    ]]>     20100045387     <![CDATA[AMPLIFIER CIRCUIT]]> http://www.patentstorm.us/applications/20100045386/description.html
  • Application Number:  20100045386
  • Publication Date:  2010-02-25
  • Inventor:  Dick, Burkhard
    • The invention relates to a circuit arrangement (30, 40, 70, 80, 90) of a low-noise linear input amplifier comprising a parallel circuit of a common-base circuit (20) and a common-emitter circuit (30), the emitters of two first transistors (Q3, Q4) are interlinked and the bases of two second transistors (Q1, Q2) are intercoupled, the collectors are interconnected in parallel with the output, and the source voltage (VG) is interlinked with the ...
    ]]>     20100045386