Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 8004363 | Wideband low-noise amplifier 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 ... | 08/23/2011 |
| 7898337 | High slew rate amplifier, analog-to-digital converter using same, CMOS imager using the analog-to-digital converter and related methods An amplifier, which may be used in a pipelined analog-to-digital converter, includes a first amplifier stage driving a second amplifier stage. At least one compensation capacitor is coupled to provide negative feedback through the capacitor from the second amplifier... | 03/01/2011 |
| 7889010 | Compensation circuit An improved compensation circuit with loop compensation is disclosed. The compensation circuit can get an equivalent large capacitance by amplifying a small capacitor. Hence, the compensation circuit can get a good compensation effect with a minimum chip area, hence... | 02/15/2011 |
| 7622995 | Negative-feedback type ultra-wideband signal amplification circuit A negative-feedback type ultra-wideband signal amplification circuit is proposed, which is designed for integration to an ultra-wideband (UWB) signal processing circuit system for providing a low-noise amplification function to UWB signals. The proposed circuit arch... | 11/24/2009 |
| 7372327 | Input structure for a power amplifier and associated methods A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to main... | 05/13/2008 |
| 7339422 | Amplifier circuit and display device Offset canceling amplifier circuit in which a high accuracy of output with a suppressed output offset is achieved and a variation in a slew rate is also suppressed, and a display device having the amplifier circuit. A first differential pair (M5, M6) c... | 03/04/2008 |
| 7271972 | Method and apparatus for reducing seek acoustics using a variable-bandwidth low-pass filter A method and apparatus for reducing seek acoustics in a disk drive using a variable-bandwidth low-pass filter is provided. The variable-bandwidth low-pass filter is used to adaptively shape a control signal supplied to a VCM for moving a head relative to a disk surf... | 09/18/2007 |
| 7248119 | Broadband amplifier with improved noise figure and distortion characteristics A broadcast transistor includes an amplifier transistor, and a negative feedback circuit connected to the amplifier transistor. A collector bias current in the amplifier transistor is switched to high and low within a range larger than a range of a current exhibitin... | 07/24/2007 |
| 7230483 | Negative feedback system with an error compensation scheme A negative feedback system includes a first summation module for receiving a system input and outputting a first summation output. A first forward module is coupled to the first summation module for receiving the first summation output and outputting a first forward... | 06/12/2007 |
| 7218175 | Dynamic feedback linearization An apparatus comprising an amplifier comprising at least one amplifier transistor, a threshold detection network and a bypass capacitor. The amplifier may be configured to generate an output signal at a collector in response to an input signal received at a base. Th... | 05/15/2007 |
| 7196584 | Amplifier circuit An amplifier circuit 11 comprises an amplifier 12, an indicator of desired power 15, a power control circuit 14 and a power measuring circuit 13. The amplifier 12 amplifies an input signal to produce an output signal, and ha... | 03/27/2007 |
| 7173487 | Power amplification circuit and communication device using the same A power amplification circuit, and a communication device using the same, which are capable of suppressing gain decreases of a power amplifier due to increases in input signal power in a state near the saturation operation, capable of reducing its size, and low in d... | 02/06/2007 |
| 7161427 | Input structure for a power amplifier and associated methods A method and apparatus provides an input structure for a power amplifier. In one example, the input structure has an input network and a predriver circuit to provide an input signal to the power amplifier. The input network includes a transformer for helping to main... | 01/09/2007 |
| 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 semiconductor processes. Such processes include, for instance, thin gat... | 12/19/2006 |
| 7142060 | Active splitter for multiple reception units An active splitter is disclosed for splitting an input signal into a plurality of split output signals. The active splitter may include a plurality of active circuits connected in parallel that produce the plurality of split output signals from the received input si... | 11/28/2006 |
| 7102412 | Loading circuit capable of canceling DC offset and mixer using the same A loading circuit capable of canceling a DC offset and a mixer using the same. The loading circuit includes a first current mirror unit and a second current mirror unit for respectively receiving a first input signal and a second input signal and generating a first ... | 09/05/2006 |
| 7098735 | Reference buffer with dynamic current control A method can allow a system to selectively control increasing of a bias source in a reference buffer or decreasing impedance looking into a output of the reference buffer for a temporary or selective time period, which can result in an increased overall efficiency o... | 08/29/2006 |
| 7088175 | Low noise, electric field sensor A system for measuring a free space electric field includes an ultrahigh impedance antenna positioned in the electric field to generate a signal from the electric field. An amplifier having an input port is provided to amplify the signal. The amplifier generates an ... | 08/08/2006 |
| 7053657 | Dynamically biased wide swing level shifting circuit for high speed voltage protection input/outputs Embodiments of the present invention recite a level shifting circuit for high voltage protection. In embodiments of the present invention, the level shifting circuit comprises a first transistor, a second transistor, a third transistor, and a fourth transistor coupl... | 05/30/2006 |
| 7053705 | Mixed-mode (current-voltage) audio amplifier A method and system for providing a mixed-mode (current- and voltage-source) audio amplifier is disclosed. The mixed-mode amplifier includes a voltage sensing feedback path including a first network comprising at least one circuit; and a current sensing feedback pat... | 05/30/2006 |
| 7053809 | Analog-to-digital converter circuitry having a cascade An analog to digital converter and/or related systems which in some aspects may contain but are not limited to: at least one cascade of N gain elements operably couplable with analog circuitry, and a gain element of the at least one cascade having a gain larger than... | 05/30/2006 |
| 7023278 | Digital power amplifier level control A digital power amplifier with variable output power control is disclosed. An amplifying stage includes a first attenuator that applies one of n attenuation steps to an RF signal in response to a desired output power level of the digital power amplifier. A feedback ... | 04/04/2006 |
| 7019590 | Self-stabilizing differential load circuit with well controlled impedance A circuit for providing a self-stabilizing, differential load circuit with well controlled impedance to an amplifier is described. According to one embodiment, two pairs of transistors in a cross-coupled configuration and a degeneration resistor for each transistor ... | 03/28/2006 |
| 6989716 | Variable gain amplifier Disclosed is a variable gain amplifier having low voltage, low distortion, high linearity and wideband operating characteristics. The variable gain amplifier comprises an input signal provision and variable gain controller for receiving first and second input signal... | 01/24/2006 |
| 6972630 | Self-biased darlington amplifier An apparatus comprising a Darlington transistor pair and a bias circuit. The Darlington transistor pair may be configured to generate an output signal at an output node in response to an input signal received through an input node. The bias circuit may be coupled be... | 12/06/2005 |
| 6937104 | High speed high current gain operational amplifier An operational amplifier having a low impedance input and a high current gain output. The operational amplifier comprises: 1) a first N-channel transistor having a source coupled to the low impedance input of the operational amplifier; 2) a first constant current so... | 08/30/2005 |
| 6927634 | Self-biased Darlington amplifier An apparatus comprising a Darlington transistor pair and a bias circuit. The Darlington transistor pair may be configured to generate an output signal at an output node in response to an input signal received through an input node. The bias circuit may be coupled be... | 08/09/2005 |
| 6906595 | Variable gain current feedback amplifier An apparatus comprising an amplifier, a first resistor and a second resistor. The amplifier (i) comprises a first transistor and a second transistor and (ii) may be configured to generate an output signal in response to an input signal. The first resistor may be con... | 06/14/2005 |
| 6873207 | Power amplification circuit and communication device using the same A power amplification circuit, and a communication device using the same, which are capable of suppressing gain decreases of a power amplifier due to increases in input signal power in a state near the saturation operation, capable of reducing its size, and low in d... | 03/29/2005 |
| 6853251 | Self-adjusting winner lineup amplifier A self-adjusting winner lineup amplifier comprising signal control sections which level-control comparison signals (Ci) from word weighted comparators of a memory area, a self-adjusting distance amplifying section corresponding to the respective rows in t... | 02/08/2005 |
| 6825724 | Amplifier and method for processing signals An amplifier includes a differential pair including a pair of input ports and a pair of output ports and a nonlinear load coupled to the differential pair. The pair of output ports is coupled to the pair of input ports to provide negative feedback. The pair of outpu... | 11/30/2004 |
| 6621331 | Variable negative resistance cell for bipolar integrated circuits An effective means and apparatus for generating a negative resistance including a circuit element that exhibits an increase in current as the applied voltage is decreased. Other embodiments of the present invention provide electronic means for improving t... | 09/16/2003 |
| 6545620 | Current-to-voltage converter with controllable gain, and signal processing circuit comprising such a converter Summarizing, the present invention provides an IVC (100), comprising an operational amplifier (110) with an inverting input (112) and an output (113), and a feedback resistor ladder network (120) coupled between the output (113) and the inverting input (1... | 04/08/2003 |
| 6369654 | Semiconductor device A semiconductor device includes a plurality of resistors each of which has a resistance that varies depending on voltage applied between contacts of the resistor. The semiconductor device includes a first resistor including a first resistive layer connect... | 04/09/2002 |
| 6211730 | Pre-amplifier circuit A pre-amplifier circuit comprises an operation amplifier having a noninverting input terminal connected to a voice input terminal, a negative feedback circuit having a first resistor which is connected between an output terminal of the operation amplifier... | 04/03/2001 |
| 6128354 | Data detection pre-amplifier circuit A pre-amplifier circuit, which may be used in a variety of data recovery circuits to accurately recover data transmissions, includes an input regulatory circuit, a feedback circuit, and an amplifier. The input regulatory circuit regulates the magnitude of... | 10/03/2000 |
| 6121818 | Mixer using replica voltage-current converter The present invention discloses a mixer using a replica voltage-current converter, and more particularly a mixer using the replica voltage-current (V-I) converter of the present invention, which feedbacks the output current of the replica voltage-current ... | 09/19/2000 |
| 6018262 | CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter An analog-digital converter includes a ƊΣ modulator, a digital filter, a high-pass filter and a multiplier which are connected in series. Analog input is converted into serial-bit strings by the ƊΣ modulator, for which gain `1/A` is set. The digital f... | 01/25/2000 |
| 5977571 | Low loss connecting arrangement for photodiodes Each of a plurality of photodiodes forming a photodetector is mounted on a respective metal pad on the surface of a semiconductor integrated circuit chip including a corresponding number of amplifier circuits for detecting the photocurrent from respective... | 11/02/1999 |
| 5963095 | Amplifier circuit, a transmitter and a wireless telephone An amplifier circuit, particularly for RF-purposes includes a main current stream of a controllable RF-semiconductor device having a control input, a control means having a control output coupled to the control input for controlling the main current strea... | 10/05/1999 |
