| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | LNA with Programmable Linearity | US15272103 | 2016-09-21 | US20180083579A1 | 2018-03-22 | Hossein Noori; Chih-Chieh Cheng |
| A receiver front end capable of receiving and processing intraband non-contiguous carrier aggregate (CA) signals using multiple low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” input stage and a “common gate” output stage can be turned on or off using the gate of the output stage. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input stage of each cascode. Further switches used for switching degeneration inductors, gate/sources caps and gate to ground caps for each legs can be used to further improve the matching performance of the invention. | ||||||
| 102 | FAST SETTLING CAPACITIVE GAIN AMPLIFIER CIRCUIT | US15600542 | 2017-05-19 | US20180076780A1 | 2018-03-15 | Hanqing Wang; Gerard Mora-Puchalt |
| A capacitive gain amplifier circuit amplifies an input signal by a pair of differential amplifier circuits couples in series. The first differential amplifier circuit is reset during an autozero phase while disconnected from the second differential amplifier circuit, and the first and second differential amplifier circuits are connected together in series during a chop phase. A set of feedback capacitors is selectively switched in between respective outputs of the second differential amplifier circuit and respective inputs of the first differential amplifier circuit during the chop phase. | ||||||
| 103 | SENSOR AMPLIFIER ARRANGEMENT AND METHOD OF AMPLIFYING A SENSOR SIGNAL | US15689760 | 2017-08-29 | US20170359036A1 | 2017-12-14 | Thomas Fröhlich; Matthias Steiner |
| A sensor amplifier arrangement includes an amplifier having a signal input to receive a sensor signal and a signal output, and a feedback path that couples the signal output to the signal input, wherein the feedback path includes an anti-parallel circuit of diodes, and a voltage divider including a first and a second divider resistor and a voltage divider tap between the first and the second divider resistor, wherein the voltage divider couples the signal output to a reference potential terminal, and the voltage divider tap is coupled to the anti-parallel circuit of diodes and the anti-parallel circuit of diodes is coupled to the signal input. | ||||||
| 104 | Tunable radio frequency low noise amplifier | US15131894 | 2016-04-18 | US09705545B2 | 2017-07-11 | Lawrence Connell; Terrie McCain; William Roeckner |
| An apparatus comprising an amplifier comprising an input, a capacitor having a capacitor first side and a capacitor second side, wherein the capacitor first side is coupled to the input, a switch having a switch first side and a switch second side, wherein the switch first side is coupled to the capacitor second side, and a transistor having a transistor gate, and a transistor source, wherein the transistor gate is coupled to the input and the capacitor first side, wherein the transistor source is coupled to the switch second side and wherein the switch is positioned directly between the capacitor second side and the transistor source. | ||||||
| 105 | Preamplifier circuit for a microelectromechanical capacitive acoustic transducer | US15087630 | 2016-03-31 | US09654071B2 | 2017-05-16 | Filippo David; Igino Padovani |
| Described herein is a preamplifier circuit for a capacitive acoustic transducer provided with a MEMS detection structure that generates a capacitive variation as a function of an acoustic signal to be detected, starting from a capacitance at rest; the preamplifier circuit is provided with an amplification stage that generates a differential output signal correlated to the capacitive variation. In particular, the amplification stage is an input stage of the preamplifier circuit and has a fully differential amplifier having a first differential input (INP) directly connected to the MEMS detection structure and a second differential input (INN) connected to a reference capacitive element, which has a value of capacitance equal to the capacitance at rest of the MEMS detection structure and fixed with respect to the acoustic signal to be detected; the fully differential amplifier amplifies the capacitive variation and generates the differential output signal. | ||||||
| 106 | Variable capacitor circuit and method | US13671164 | 2012-11-07 | US09610044B2 | 2017-04-04 | Nick Van Helleputte |
| A variable capacitor circuit is disclosed. The variable capacitor circuit includes a plurality of MOS capacitors, each MOS capacitor being implemented by a MOS transistor with the gate terminal connected to a first voltage signal and with the drain terminal shorted with the source terminal and connected to a second voltage signal, said MOS capacitors being connected in parallel through the gate terminal connected to the first voltage signal, and being operated in a cut-off region in which the equivalent capacitance of each MOS capacitor remains substantially constant for variations of the first voltage signal. | ||||||
| 107 | Active Device Which Has A High Breakdown Voltage, Is Memory-Less, Traps Even Harmonic Signals And Circuits Used Therewith | US15367995 | 2016-12-02 | US20170085237A1 | 2017-03-23 | Farbod Aram |
| An active device and circuits utilized therewith are disclosed. In an aspect, the active device comprises an n-type transistor having a drain, gate and bulk and a p-type transistor having a drain, gate and bulk. The n-type transistor and the p-type transistor include a common source. The device includes a first capacitor coupled between the gate of the n-type transistor and the gate of the p-type transistor, a second capacitor coupled between the drain of the n-type transistor and the drain of p-type transistor and a third capacitor coupled between the bulk of the n-type transistor and the bulk of p-type transistor. The active device has a high breakdown voltage, is memory less and traps even harmonic signals. | ||||||
| 108 | Active Device Which Has A High Breakdown Voltage, Is Memory-Less, Traps Even Harmonic Signals And Circuits Used Therewith | US15368026 | 2016-12-02 | US20170085226A1 | 2017-03-23 | Farbod Aram |
| An active device and circuits utilized therewith are disclosed. In an aspect, the active device comprises an n-type transistor having a drain, gate and bulk and a p-type transistor having a drain, gate and bulk. Then-type transistor and the p-type transistor include a common source. The device includes a first capacitor coupled between the gate of the n-type transistor and the gate of the p-type transistor, a second capacitor coupled between the drain of the n-type transistor and the drain of p-type transistor and a third capacitor coupled between the bulk of the n-type transistor and the bulk of p-type transistor. The active device has a high breakdown voltage, is memory less and traps even harmonic signals. | ||||||
| 109 | Radio frequency power amplifier circuit | US14514556 | 2014-10-15 | US09438191B2 | 2016-09-06 | Igor Ivanovich Blednov |
| An RF power amplifier circuit has an input terminal for receiving an input signal having an input power, and an output terminal for outputting an output signal. The RF power amplifier circuit comprises three amplifier stages and an input power splitter for providing respective power fraction signals to respective inputs of each amplifier stage. The input power splitter comprises a first input transmission line arranged between a first node and a second node, a second input transmission line arranged between a third node and a fourth node, and an electrical reactive element having a first terminal electrically connected to both the first and the second nodes, and a second terminal electrically coupled to a third one of the respective three inputs. | ||||||
| 110 | AMPLIFIER WITH INTEGRAL NOTCH FILTER | US14617579 | 2015-02-09 | US20160233843A1 | 2016-08-11 | Alan Ngar Loong Chan; Saihua Lin |
| An amplifier is disclosed that may include a filter, such as a notch-filter, to filter an output signal provided by the amplifier. The included filter may suppress and/or reduce a gain of the amplifier for a particular range of frequencies. In one embodiment, a frequency response of the filter may be determined by one or more reactive components included within the amplifier. In at least one embodiment, the amplifier may include two or more mutual inductors to reduce the gain of the amplifier when operated at or near a predetermined frequency. In another embodiment, the amplifier may include one or more variable capacitors that may enable the frequency response of the filter to be changed and/or modified. | ||||||
| 111 | Amplifier dynamic bias adjustment for envelope tracking | US13829946 | 2013-03-14 | US09413298B2 | 2016-08-09 | Dan William Nobbe; Jeffrey A. Dykstra; Chris Olson; James S. Cable |
| An envelope tracking amplifier having stacked transistors is presented. The envelope tracking amplifier uses dynamic bias voltages at one or more gates of the stacked transistors in addition to a dynamic bias voltage at a drain of a transistor. | ||||||
| 112 | Amplifiers Operating in Envelope Tracking Mode or Non-Envelope Tracking Mode | US14821501 | 2015-08-07 | US20160190993A1 | 2016-06-30 | Dan William Nobbe; Jeffrey A. Dykstra; Chris Olson; James S. Cable |
| Various envelope tracking amplifiers are presented that can be switched between an ET (envelope tracking) mode and a non-ET mode. Switches and/or tunable components are utilized in constructing the envelope tracking amplifiers that can be switched between the ET mode and the non-ET mode. | ||||||
| 113 | Optimization Methods for Amplifier with Variable Supply Power | US14858772 | 2015-09-18 | US20160190989A1 | 2016-06-30 | Dan William Nobbe; Jeffrey A. Dykstra; Chris Olson; James S. Cable |
| Optimization methods via various circuital arrangements for amplifier with variable supply power are presented. In one embodiment, a switch can be controlled to include or exclude a feedback network in a feedback path to the amplifier to adjust a response of the amplifier dependent on a region of operation of the amplifier arrangement (e.g. linear region or compression region). | ||||||
| 114 | Amplifier Dynamic Bias Adjustment for Envelope Tracking | US15040952 | 2016-02-10 | US20160164468A1 | 2016-06-09 | Dan William Nobbe; Jeffrey A. Dykstra; Chris Olson; James S. Cable |
| An envelope tracking amplifier having stacked transistors is presented. The envelope tracking amplifier uses dynamic bias voltages at one or more gates of the stacked transistors in addition to a dynamic bias voltage at a drain of a transistor. | ||||||
| 115 | Tunable radio frequency low noise amplifier | US13955514 | 2013-07-31 | US09319009B2 | 2016-04-19 | Lawrence Connell; Terrie McCain; William Roeckner |
| An apparatus comprising an amplifier comprising an input, a capacitor having a capacitor first side and a capacitor second side, wherein the capacitor first side is coupled to the input, a switch having a switch first side and a switch second side, wherein the switch first side is coupled to the capacitor second side, and a transistor having a transistor gate, and a transistor source, wherein the transistor gate is coupled to the input and the capacitor first side, wherein the transistor source is coupled to the switch second side and wherein the switch is positioned directly between the capacitor second side and the transistor source. | ||||||
| 116 | System and Method for Low Distortion Capacitive Signal Source Amplifier | US14935072 | 2015-11-06 | US20160065152A1 | 2016-03-03 | Michael Kropfitsch; Jose Luis Ceballos |
| According to an embodiment, a method includes amplifying a signal provided by a capacitive signal source to form an amplified signal, detecting a peak voltage of the amplified signal, and adjusting a controllable impedance coupled to an output of the capacitive signal source in response to detecting the peak voltage. The controllable impedance is adjusted to a value inversely proportional to the detected peak voltage. | ||||||
| 117 | SENSOR AMPLIFIER ARRANGEMENT AND METHOD OF AMPLIFYING A SENSOR SIGNAL | US14933068 | 2015-11-05 | US20160056776A1 | 2016-02-25 | Thomas Fröhlich; Matthias Steiner |
| A sensor amplifier arrangement includes an amplifier having a signal input to receive a sensor signal and a signal output to provide an amplified sensor signal, and a feedback path that couples the signal output to the signal input and provides a feedback current that is an attenuated signal of the amplified sensor signal and is inverted with respect to the sensor signal. | ||||||
| 118 | SWITCHING CIRCUIT | US14830183 | 2015-08-19 | US20160056771A1 | 2016-02-25 | Takayuki IBUSUKI |
| A switching circuit generates a switching pulse that is pulse modulated according to an input signal. An error amplifier includes a phase compensating filter that generates a feedback signal corresponding to the switching pulse. The error amplifier generates an error signal corresponding to a difference between the input signal and the feedback signal. A pulse modulator includes an oscillator that generates a carrier signal having a variable frequency. The pulse modulator pulse-modulates the carrier signal according to the error signal, so as to generate a pulse modulated signal. The phase compensating filter is configured such that its frequency characteristics can be adjusted according to the frequency of the carrier signal. | ||||||
| 119 | System and method for low distortion capacitive signal source amplifier | US13217890 | 2011-08-25 | US09236837B2 | 2016-01-12 | Michael Kropfitsch; Jose Luis Ceballos |
| According to an embodiment, a method includes amplifying a signal provided by a capacitive signal source to form an amplified signal, detecting a peak voltage of the amplified signal, and adjusting a controllable impedance coupled to an output of the capacitive signal source in response to detecting the peak voltage. The controllable impedance is adjusted to a value inversely proportional to the detected peak voltage. | ||||||
| 120 | RADIO FREQUENCY POWER AMPLIFIER CIRCUIT | US14514556 | 2014-10-15 | US20150333706A1 | 2015-11-19 | IGOR IVANOVICH BLEDNOV |
| An RF power amplifier circuit has an input terminal for receiving an input signal having an input power, and an output terminal for outputting an output signal. The RF power amplifier circuit comprises three amplifier stages and an input power splitter for providing respective power fraction signals to respective inputs of each amplifier stage. The input power splitter comprises a first input transmission line arranged between a first node and a second node, a second input transmission line arranged between a third node and a fourth node, and an electrical reactive element having a first terminal electrically connected to both the first and the second nodes, and a second terminal electrically coupled to a third one of the respective three inputs. | ||||||
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