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| Number | Title | Issue Date |
| 8058928 | Operational amplifier for an active pixel sensor The present invention includes operational amplifier for an active pixel sensor that detects optical energy and generates an analog output that is proportional to the optical energy. The active pixel sensor operates in a number of different modes including: signal i... | 11/15/2011 |
| 7928800 | Programmable compensation network for operational amplifiers Systems and methods for implementing a programmable network for a multimode conditionally stable operational amplifier are disclosed. ... | 04/19/2011 |
| 7872524 | Amplification circuit, amplification circuit noise reducing method and program thereof [Problems] to provide a CMOS low-noise amplification circuit which can reduce a chip area and design time, and which is easy to be digital-controlled from outside. [Means For Solving the Problems] The amplification circuit includes; an amplification stage (12... | 01/18/2011 |
| 7423484 | Adaptive predistortion for a transmit system with gain, phase and delay adjustments Systems and methods relating to the provision of gain, phase and delay adjustments to signals to be used by a predistortion subsystem. A portion of an input signal is delayed by delay elements prior to being received by the predistortion subsystem. The delayed input... | 09/09/2008 |
| 7409193 | Predistortion circuit for a transmit system Systems and methods related to amplifier systems which use a predistortion subsystem to compensate for expected distortions in the system output signal. A signal processing subsystem receives an input signal and decomposes the input signal into multiple components. ... | 08/05/2008 |
| 7405616 | Nested transimpendance amplifier A differential transimpedance amplifier circuit comprises first, second, third and fourth operational amplifiers having a first inverting input, a first non-inverting input, a first inverting output and a first non-inverting output. A first feedback element communic... | 07/29/2008 |
| 7403068 | Method for double sampling loop negative feedback and double sampling negative feedback amplifier A method for double sampling loop negative feedback comprising: obtaining a low-frequency feedback signal from the output of the amplifier; obtaining a high-frequency feedback signal from part of the amplifier of which high-frequency phase shift is low, wherein two-... | 07/22/2008 |
| 7382193 | Preserving linearity of an isolator-free power amplifier by dynamically adjusting gain and phase An amplifier circuit (100) includes a driver stage ( ) 120 with at least an active device (140) for pre-amplification and output of a pre-amplified signal; and an output stage (160) with at least an active device (180) for further ... | 06/03/2008 |
| 7365668 | Continuous-time delta-sigma analog digital converter having operational amplifiers The invention concerns a continuous-time delta-sigma analog-digital converter for the conversion of an analog input signal into a digital output signal, comprising an analog filter which filters the analog input signal and at least one externally circuited operation... | 04/29/2008 |
| 7365606 | Receiving amplifier, in particular for television receivers, and use of the receiving amplifier A receiving amplifier includes a semiconductor body with a first node, a second node and an amplifier circuit. The amplifier includes at least one field-effect transistor, a first input, and a second input. A capacitive element is arranged between the inputs of the ... | 04/29/2008 |
| 7357025 | Micromachined apparatus with co-linear drive arrays A mass includes a first set of drive fingers interdigitated with a first array of fixed drive fingers and a second set of drive fingers interdigitated with a second array of fixed drive fingers. Each array of fixed drive fingers is affixed to a substrate using a plu... | 04/15/2008 |
| 7347094 | Coupling apparatus for inertial sensors A coupling apparatus allows anti-phase movements of inertial sensor element frames along parallel axes but substantially prevents in-phase movements of the frames. The coupling apparatus includes a bar coupled between first and second sensor element frames and at le... | 03/25/2008 |
| 7349465 | Line interface system A transceiver system is disclosed for use in a telecommunication system. The transceiver system includes a transmission circuit with a differential transmitter input coupled via a transmitter input stage to a differential input of a transmission amplifier in an embo... | 03/25/2008 |
| 7346100 | Estimating gain and phase imbalance in upconverting transmitters Estimation of gain and phase imbalance of an upconverting transmitter. A transmitter transmits symbols containing vector components of pre-specific relationship in an analog signal. A receiver (also contained in a transceiver along with the transmitter) examines the... | 03/18/2008 |
| 7342458 | Negative gain transductance amplifier circuit The invention proposes a negative gain transconductance amplifier circuit (1) for capacitive load that includes: an RC serial circuit connected between an input terminal (E) of the amplifier circuit and a intermediate terminal (A); an amplificat... | 03/11/2008 |
| 7339426 | High efficiency linear amplifier employing dynamically controlled back off A high efficiency radio frequency (RF) power amplifier having dynamically controlled back off is disclosed. The RF input voltage is sampled by an adaptive analog signal processing circuit. The adaptive analog signal processing circuit controls the supply voltage to ... | 03/04/2008 |
| 7339420 | Method of switching PLL characteristics and PLL circuit A loop filter which is a component of a PLL circuit includes a switching element for switching a capacitance value which connects and disconnects a second capacitive element to a first capacitive element according to a natural angular frequency switching signal, and... | 03/04/2008 |
| 7336130 | Attenuator, variable gain amplifier using the same, and electronic equipment An attenuator attenuates input signals and outputs the signals to an amplifier arranged to amplify signals applied to two input terminals. The attenuator includes first and second output terminals to be respectively connected to the two input terminals of the amplif... | 02/26/2008 |
| 7327192 | Adaptive predistortion for a transmit system with gain, phase and delay adjustments Systems and methods relating to the provision of gain, phase and delay adjustments to signals to be used by a predistortion subsystem. A portion of an input signal is delayed by delay elements prior to being received by the predistortion subsystem. The delayed input... | 02/05/2008 |
| 7323854 | Zero cancellation in multiloop regulator control scheme Control loops in a voltage regulator can be stabilized using minimal silicon area. A current limit signal, generated by a current limit control loop in the voltage regulator, can be divided to minimize a zero provided in a compensation set associated with a voltage ... | 01/29/2008 |
| 7324615 | Time signal receiver and decoder A time signal receiver and decoder receives, detects and stores time information from time signals, e.g., WWV, WWVH, WWVB (USA), JJY (Japan), MSF (UK) and the like. The time information may be used for a self setting clock, and the clock may be used as a reference i... | 01/29/2008 |
| 7323939 | Low noise amplifier for wideband tunable matching Provided is a low noise amplifier with a common source and a source degeneration, which has linearity, power gain, noise factor, and lossless input matching. The low noise amplifier includes: a first inductor having one terminal connected to an input terminal receiv... | 01/29/2008 |
| 7323930 | Amplifiers with compensation An amplifier circuit comprises a first amplifier having an input and an output. A second amplifier has an input that communicates with an output of the first amplifier. A third amplifier has an input that communicates with an input of the first amplifier. A fourth a... | 01/29/2008 |
| 7321735 | Optical down-converter using universal frequency translation technology A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated w... | 01/22/2008 |
| 7317353 | Amplification device An amplifier apparatus in which a signal is amplified by an amplifier and distortion produced by the amplifier is compensated for, that can continue to operate even in cases where the amplitude of a distortion component contained in the amplified signal after distor... | 01/08/2008 |
| 7317351 | Low noise amplifier A low noise amplifier (LNA) is discussed. In implementations, a LNA may include a feedback section coupled to a transistor. The feedback section may have a resistive portion including a buffer and a resistor. A capacitor may be connected in parallel with the resisto... | 01/08/2008 |
| 7312659 | Multi-amplifier circuit An amplifier circuit includes first, second, third and fourth transconductance amplifiers that each have an input, an output and a transconductance gain. The outputs of the first, second and third amplifiers communicate with the inputs of the second, third and fourt... | 12/25/2007 |
| 7312656 | Adaptive predistortion for a transmit system with gain, phase and delay adjustments Systems and methods relating to the provision of gain, phase and delay adjustments to signals to be used by a predistortion subsystem. A portion of an input signal is delayed by delay elements prior to being received by the predistortion subsystem. The delayed input... | 12/25/2007 |
| 7305041 | Peak suppression of multi-carrier signal with different modulation A technique for peak suppression, phase and amplitude equalizer of multi-carrier signals with different modulation is described. The input to the multi-carrier power amplifier is modified by a peak suppression, phase and amplitude equalizer circuit prior to being ap... | 12/04/2007 |
| 7304537 | Power amplification apparatus of a portable terminal The present invention relates to a power amplification circuit of a mobile device for improving the efficiency and the linearity properties of the power amplifier. In one embodiment, the power amplifier improves these properties by controlling the input voltage of t... | 12/04/2007 |
| 7298205 | Amplifier and frequency converter An amplifier circuit amplifies a signal inputted from an input terminal. A first feedback circuit is placed across an emitter of a bipolar transistor and an input of the amplifier circuit. A second feedback circuit is placed across the input and an output of the amp... | 11/20/2007 |
| 7295074 | Doherty power amplifier with phase compensation A Doherty power amplifier is provided that includes a main amplifier device and an auxiliary amplifier device. The Doherty power amplifier further includes a phase compensation network. The phase compensation network is configured to maintain a substantially constan... | 11/13/2007 |
| 7295064 | Doherty amplifier The present invention is intended to provide a Doherty amplifier that can accomplish a linear amplifying and a power combining operation closer to the ideal in a simple configuration. The configuration comprises gain compensator 6 that is composed of a parall... | 11/13/2007 |
| 7295062 | Pulse modulated power converter A pulse modulation power converter comprising a forward path including a forward block (15), a switching stage (11) for amplifying an output from the forward block, and an output filter (12) for low pass filtering an output signal from the switc... | 11/13/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7295066 | Adaptive predistortion for a transmit system Systems, methods, and devices relating to the provision of deliberate predistortion to an input signal to compensate for distortions introduced by an amplifier subsystem. An input signal is received by a signal processing system which includes a predistortion subsys... | 11/13/2007 |
| 7292098 | Operational amplifier An operational amplifier is described. The operational amplifier includes a first stage, a second stage, a third stage, and a fourth stage. The amplifier includes a nested transconductance-capacitance compensation configuration. The third stage includes class AB con... | 11/06/2007 |
| 7292835 | Wireless and wired cable modem applications of universal frequency translation technology Frequency translation and applications of same are described herein, including cable modem applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and fil... | 11/06/2007 |
| 7287428 | Inertial sensor with a linear array of sensor elements An inertial sensor includes at least one pair of sensor elements arranged in a linear array. Each sensor element has a frame and a movable mass suspended within the frame. The frames of each pair of sensor elements may be coupled so that the frames are allowed to mo... | 10/30/2007 |
| 7289587 | Repeatability over communication links Systems, methods, and other embodiments associated with a repeatable communication system are disclosed. One example system for receiving signals from an electronic component over a plurality of point-to-point communication links comprises a repeatability logic oper... | 10/30/2007 |
