公开(公告)号：US11994548B2

公开(公告)日：2024-05-28

申请号：US17512552

申请日：2021-10-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Arnab Das

IPC: G01R29/08 ,  H03F3/193 ,  H03G3/30

CPC classification number: G01R29/0878 ,  H03F3/193 ,  H03G3/3036 ,  H03F2200/435 ,  H03F2200/451 ,  H03G2201/103

Abstract: An apparatus comprises a transistor pair including a first metal oxide semiconductor field effect transistor (MOSFET) coupled to a second MOSFET. The first MOSFET includes a first gate terminal and a first drain terminal. The second MOSFET comprises a second gate terminal and a second drain terminal. The first gate terminal is configured to receive a first signal. The second gate terminal is configured to receive a second signal that is phase shifted with respect to the first signal. An output node is coupled to the first drain terminal and the second drain terminal and configured to output a third signal that is proportional to a power of the first signal and the second signal.

公开(公告)号：US11990881B2

公开(公告)日：2024-05-21

申请号：US18181527

申请日：2023-03-09

Applicant: Biamp Systems, LLC

Inventor： Eugene Goff ,  Ray Dippert ,  Matthew V. Kotvis ,  Samarth Behura

IPC: H04R1/10 ,  G06F3/16 ,  G10L21/0232 ,  H03G5/16 ,  H04R1/40 ,  H04R3/00 ,  H04R3/04 ,  H04R3/12 ,  H04R5/04 ,  H04R27/00 ,  H04R29/00 ,  H04S7/00 ,  G10L21/0208 ,  G10L21/0216

CPC classification number: H03G5/165 ,  G06F3/16 ,  G10L21/0232 ,  H04R1/1083 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/04 ,  H04R3/12 ,  H04R5/04 ,  H04R27/00 ,  H04R29/001 ,  H04R29/002 ,  H04R29/007 ,  H04S7/301 ,  G10L2021/02082 ,  G10L2021/02166 ,  H03G2201/103 ,  H04R2227/001 ,  H04R2227/003 ,  H04R2430/01

Abstract: An example method of operation may include identifying speakers and microphones connected to a network controlled by a controller, assigning a preliminary output gain to the speakers used to apply test signals, measuring ambient noise detected from the microphones, recording chirp responses from all microphones simultaneously based on the test signals, deconvolving all chirp responses to determine a corresponding number of impulse responses, and measuring average sound pressure levels (SPLs) of each of the microphones to obtain a SPL level based on an average of the SPLs.

公开(公告)号：US11973477B2

公开(公告)日：2024-04-30

申请号：US17392544

申请日：2021-08-03

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION

Inventor： Hideaki Majima

IPC: H03F3/45 ,  H01P1/36 ,  H03G3/30 ,  H03K5/24

CPC classification number: H03F3/45475 ,  H01P1/36 ,  H03G3/30 ,  H03K5/24 ,  H03F2200/375 ,  H03G2201/103

Abstract: According to one embodiment, a signal processing circuit includes a first voltage setting circuit that sets a reference voltage on an input side of an isolator, a variable gain amplifier circuit that amplifies an output signal of the isolator, a DC offset adjustment circuit that adjusts an offset of the variable gain amplifier circuit, a second voltage setting circuit that sets a reference voltage on an output side of the isolator, and a control circuit that controls the DC offset adjustment circuit in response to a result of comparison of an output voltage of the variable gain amplifier circuit with an output voltage of the second voltage setting circuit.

公开(公告)号：US20240136987A1

公开(公告)日：2024-04-25

申请号：US18048225

申请日：2022-10-19

Applicant: MACOM Technology Solutions Holdings, Inc.

Inventor： Duy P. Nguyen ,  Nguyen L.K. Nguyen ,  Thanh T. Pham ,  Trong Phan ,  Stefano D'Agostino ,  Wayne Kennan

IPC: H03F3/45 ,  H03G3/30

CPC classification number: H03F3/4508 ,  H03G3/30 ,  H03F2200/447 ,  H03F2200/468 ,  H03G2201/103

Abstract: Amplifiers with temperature-adaptive gain and peaking gain control are described. In one example, a temperature-adaptive amplifier includes an amplifier, a temperature sense circuit, and a peaking control level shifter to bias shift the output of the amplifier and adjust a peaking gain of the amplifier based on the temperature control signal. The peaking control level shifter can adjust a peaking gain of the amplifier based on the temperature control signal. The temperature-adaptive control can help to compensate for peaking gain in amplifiers based on the operating temperature of the amplifier. The control can help to compensate for unwanted changes in amplifier peaking gain, over time, resulting in more consistent peaking gain over the full operating frequency range of amplifiers.

公开(公告)号：US11916524B1

公开(公告)日：2024-02-27

申请号：US17948632

申请日：2022-09-20

Applicant: Bendix Commercial Vehicle Systems LLC

Inventor： Tandi Wijaya ,  Michael D. Cremona ,  Thomas J. Hayes ,  Ran Wei

IPC: H02G3/30 ,  H03G3/30 ,  H03F3/04 ,  H04B3/54 ,  B60R16/023

CPC classification number: H03G3/30 ,  B60R16/023 ,  H03F3/04 ,  H04B3/54 ,  H03G2201/103

Abstract: A system for calibrating signals received over a power line within a vehicle includes a signal conditioning circuit that converts the analog input signals into digital input signals. In one embodiment the circuit includes an adjustable gain circuit that outputs an amplifier gain signal establishing an amplifier gain level and an amplifier that outputs amplified signals responsive to the analog input signals and the amplifier gain signal. In another embodiment, the circuit includes a bias circuit that outputs a bias signal establishing a bias level and a comparator that generates the digital input signals responsive to the analog input signals and the bias signal. A controller receives the digital input signals and generates, depending on the embodiment, one or more control signals configured to control the configuration of the amplifier gain signal and amplifier gain level and/or the bias signal and the bias level.

公开(公告)号：US11909366B2

公开(公告)日：2024-02-20

申请号：US17555460

申请日：2021-12-19

Applicant: GM Cruise Holdings LLC

Inventor： Kamel Benboudjema ,  Richard Kalantar Ohanian ,  Aram Garibyan ,  Abdelkrim El Amili ,  Scott Singer

IPC: H03G3/20 ,  H03G3/30 ,  H03F3/08 ,  G01S17/931 ,  G01S7/481

CPC classification number: H03G3/30 ,  G01S7/4816 ,  G01S17/931 ,  H03F3/08 ,  H03F2200/129 ,  H03G2201/103

Abstract: Various technologies described herein pertain to variable gain amplification for a sensor application. A multistage variable gain amplifier system provides variable gain amplification of an input signal. The multistage variable gain amplifier system includes a plurality of amplification stages. The multistage variable gain amplifier system further includes a power detector configured to detect a power level of an input signal received by the multistage variable gain amplifier system. The multistage variable gain amplifier system also includes a controller configured to control the amplification stages based on the power level of the input signal. The multistage variable gain amplifier system can output an output signal such that the amplification stages are controlled to adjust a gain applied to the input signal by the multistage variable gain amplifier system to output the output signal.

公开(公告)号：US11894819B2

公开(公告)日：2024-02-06

申请号：US17176016

申请日：2021-02-15

Applicant: Sensaphonics, Inc.

Inventor： Stephen D. Julstrom ,  Michael J. Santucci

IPC: H03G3/30 ,  H04R1/10 ,  G06F3/16 ,  H04R1/08 ,  A61F11/08 ,  H03G5/16 ,  H04R3/00

CPC classification number: H03G3/3005 ,  A61F11/08 ,  G06F3/165 ,  H03G5/165 ,  H04R1/08 ,  H04R1/1016 ,  H04R1/1041 ,  H04R1/1083 ,  H04R3/007 ,  H03G2201/103 ,  H04R2420/07 ,  H04R2430/01

Abstract: An integrated system for hearing protection and enhancement having earpieces including microphones and receivers to provide for user control of ambience level (mic gain), monitor input, control over limiting of excessive levels, and frequency equalization, all with very wide input dynamic range capability and controlled output dynamic range. The user control comprises a wired or wireless smartphone app. Also, the wide input dynamic range is achieved by placement of limiter circuitry capable of handling the entire input dynamic range prior to the most dynamic range limited circuit blocks: digital EQ block, output amplifier, earpiece receiver, and the users' ears. Switches allow combining left and right signals to be directed to a user's favored ear, if necessary.

公开(公告)号：US11864812B2

公开(公告)日：2024-01-09

申请号：US16562362

申请日：2019-09-05

Applicant: Applied Medical Resources Corporation

Inventor： Michael Nguyen ,  Igor Gorin ,  Joanna Pang

IPC: A61B18/12 ,  A61B18/00 ,  A61B18/14

CPC classification number: A61B18/1206 ,  A61B18/1445 ,  A61B2018/0063 ,  A61B2018/00601 ,  A61B2018/00642 ,  A61B2018/00726 ,  A61B2018/00767 ,  A61B2018/00779 ,  A61B2018/00827 ,  A61B2018/00875 ,  A61B2018/00892 ,  H03F2200/129 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: Systems and methods for enhancing surgical outcomes by providing generators having optimal RF output for sealing, fusing and/or cutting tissue or vessels under all dynamic conditions are described. Examples of dynamic conditions may include varying tissue impedance load due to electrosurgical operations or tissue affects, any operational conditions and commands determined by the surgeon, surgical procedure and/or device script. This is achieved by implementing a digital closed-loop control system within the electrosurgical generator to regulate voltage, current, and power of the RF output. The digital closed-loop control system may include an RF amplifier for generating RF energy, a feedback system for constantly monitoring the electrical characteristics, e.g., voltage, current, and power, of the supplied RF energy to a connectable electrosurgical instrument and a microcontroller for processing measurement data from the feedback system and adjusting the output of the RF amplifier to meet a desired regulation target under any varying conditions.

公开(公告)号：US20230421114A1

公开(公告)日：2023-12-28

申请号：US17847761

申请日：2022-06-23

Applicant: WOLFSPEED, INC.

Inventor： Christophe JOLY

IPC: H03F1/56 ,  H03G3/30 ,  H03F3/24

CPC classification number: H03F1/565 ,  H03G3/30 ,  H03F3/245 ,  H03F2200/222 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: An amplifier includes an input impedance matching network; at least one transistor; and a gain equalizer configured to equalize gain. The gain equalizer is connected to components of the input impedance matching network.

公开(公告)号：US11848654B2

公开(公告)日：2023-12-19

申请号：US16893137

申请日：2020-06-04

Applicant: Wilson Electronics, LLC

Inventor： Christopher Ken Ashworth ,  Patrick Lee Cook ,  Dale Robert Anderson

IPC: H03G3/30 ,  H03F3/24 ,  H04L5/14 ,  H04W16/26 ,  H04B7/155

CPC classification number: H03G3/3042 ,  H03F3/245 ,  H04B7/15535 ,  H04B7/15578 ,  H04L5/1438 ,  H04W16/26 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

Abstract: A technology is described for a repeater. A repeater can comprise a first port; a second port; a first-direction amplification and filtering path coupled between the first port and the second port; a multiplexer coupled between: the first-direction amplification and filtering path; and the second port; and a power amplifier (PA) coupled between the first port and the multiplexer. The repeater can further comprise an adjustable matching network coupled between the PA and the multiplexer, wherein the adjustable matching network is actively adjusted to match an impedance of an output of the PA at a selected channel over a frequency range for a first-direction signal with an impedance of an input of the multiplexer over the selected channel over the frequency range for a first-direction signal.