公开(公告)号：EP2481150A4

公开(公告)日：2013-11-20

申请号：EP09849712

申请日：2009-09-22

Applicant: NOKIA CORP

Inventor： KALTIOKALLIO MIKKO ,  RYYNAENEN JUSSI

IPC: H03F1/32 ,  H03F3/19 ,  H03F3/191

CPC classification number: H03F1/34 ,  H03F1/3211 ,  H03F1/3241 ,  H03F3/19 ,  H03F3/191 ,  H03F3/45179 ,  H03F3/45183 ,  H03F2200/165 ,  H03F2200/168 ,  H03F2200/171 ,  H03F2200/294 ,  H03F2200/411 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03F2203/45702

Abstract: An amplifier circuitry having adjustable parameters is presented. The present amplifier circuitry includes a feed-back loop, wherein the feedback loop converts (26) a signal to another frequency, filters (20) the signal in the other frequency, and restores (24) the filtered signal back to the original frequency for inputting the signal to an input of the amplifier (22). The feed-back loop implements a band-stop filter (20) having an adjustable stopband causing the amplifier circuitry to have an adjustable band-pass response. A passband of the amplifier circuitry is changed from one operating frequency to another operating frequency by changing frequency conversion parameters of the feedback loop.

Abstract translation: 提出了具有可调参数的放大器电路。 本放大器电路包括反馈回路，其中反馈回路将信号转换（26）到另一个频率，对另一频率的信号进行滤波（20），并将滤波后的信号恢复（24）到原始频率 将信号输入到放大器（22）的输入端。 反馈回路实现具有可调节阻带的带阻滤波器（20），使得放大器电路具有可调节的带通响应。 通过改变反馈回路​​的频率转换参数，放大器电路的通带从一个工作频率改变到另一个工作频率。

公开(公告)号：EP2466746A1

公开(公告)日：2012-06-20

申请号：EP10195354.5

申请日：2010-12-16

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)

Inventor： Mu, Fenghau

IPC: H03F1/22 ,  H03F1/34 ,  H03F3/45

CPC classification number: H03F3/193 ,  H03F1/223 ,  H03F1/347 ,  H03F3/45179 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2200/294 ,  H03F2200/541 ,  H03F2203/45386 ,  H03F2203/45394 ,  H03F2203/45516 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45544 ,  H03F2203/45554 ,  H03F2203/45591 ,  H03F2203/45621 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03F2203/45662 ,  H03F2203/45731

Abstract: A low noise amplifier comprises at least one amplifying transistor (Ts1; Ts2) configured in a common source configuration to receive an input signal (RFin) at a gate terminal and provide an amplified signal at a drain terminal and at least one feedback path arranged to couple a part of the amplified signal back to the gate terminal and comprising a feedback impedance. The low noise amplifier further comprises a self-coupled step-up transformer having at least one primary winding (Lp) connected to a supply voltage (Vdd) and the drain terminal of the at least one amplifying transistor and at least one self-coupled secondary inductor winding (Lf1; Lf2) arranged in the feedback path. The low noise amplifier provides a better suppression for out-band interference and at the same time it has a wider input match bandwidth, decent conversion gain and decent noise figure without increasing power consumption.

Abstract translation: 低噪声放大器包括至少一个配置在公共源配置中的放大晶体管（Ts1; Ts2），以在栅极端处接收输入信号（RFin），并在漏极端提供放大信号，并将至少一个反馈路径布置成 将放大的信号的一部分耦合到栅极端并包括反馈阻抗。 低噪声放大器还包括自耦合升压变压器，其具有连接到电源电压（Vdd）的至少一个初级绕组（Lp）和至少一个放大晶体管的漏极端子和至少一个自耦合次级 电感绕组（Lf1; Lf2）布置在反馈路径中。 低噪声放大器为带外干扰提供了更好的抑制，同时具有更宽的输入匹配带宽，良好的转换增益和体面的噪声系数，而不增加功耗。

公开(公告)号：EP1735907A2

公开(公告)日：2006-12-27

申请号：EP05725392.4

申请日：2005-03-10

Applicant: GCT Semiconductor, Inc.

Inventor： PARK, Joonbae ,  LEE, Seung-Wook ,  LEE, Jeong-Woo ,  LEE, Kyeongho

IPC: H03F3/45

CPC classification number: H03F3/211 ,  H03F3/45475 ,  H03F3/45659 ,  H03F2203/45136 ,  H03F2203/45138 ,  H03F2203/45166 ,  H03F2203/45168 ,  H03F2203/45434 ,  H03F2203/45522 ,  H03F2203/45591

Abstract: A variable-gain amplifier circuit uses a pair of single-ended operational amplifiers (100, 110) to amplify complementary portions of a differential input signal (IN, INB). By using two single-ended amplifiers (100, 110) instead of a single differential amplifier, linearity is significantly improved. In addition, common mode feedback circuitry is eliminated along with harmonic distortion and other forms of noise which tend to negative affect the quality of the signal output from the circuit.

公开(公告)号：EP2852055B1

公开(公告)日：2018-09-19

申请号：EP14176166.8

申请日：2014-07-08

Applicant: Honeywell International Inc.

Inventor： Larson, Mark R.

IPC: H03F3/45

CPC classification number: H03F3/45071 ,  H03F3/45475 ,  H03F2200/252 ,  H03F2200/261 ,  H03F2200/447 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45604 ,  H03F2203/45616 ,  H03F2203/45618 ,  H03G1/0088 ,  H03G3/3026

Abstract: A device comprises a first amplifier, a first resistive element that comprises a first resistor and a first dummy switch, a second amplifier, a second resistive element that comprises a second resistor and a second dummy switch, and a programmable resistive gain element operable to receive control input, wherein a resistance value of the programmable resistive gain element is based at least in part on the received control input, wherein a first end of the programmable resistive gain element is connected to both the first inverting input of the first amplifier and to a second end of the first dummy switch, and wherein a second end of the programmable resistive gain element is connected to both the second inverting input of the second amplifier and to a second end of the second dummy switch.

公开(公告)号：EP2824832B1

公开(公告)日：2018-08-29

申请号：EP13175882.3

申请日：2013-07-10

Applicant: ams AG

Inventor： Dünser, Wolfgang ,  Bingesser, Markus ,  Fröhlich, Thomas

IPC: H03F1/30 ,  H03F3/45 ,  H03F3/181

CPC classification number: H03F3/183 ,  H03F1/30 ,  H03F3/181 ,  H03F3/45076 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2203/45116 ,  H03F2203/45136 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45514 ,  H03F2203/45521 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H04R1/04 ,  H04R2201/003

Abstract: An electric amplifier circuit for amplifying an output signal of a microphone comprises a supply input terminal (V10) to apply a supply potential (VDDA) for operating the electric amplifier circuit and a differential amplifier (110) having a first input terminal (E110a) for applying the output signal of the microphone (20), a second input terminal (E110b) and an output terminal (A110) for outputting an amplified output signal (OUT) of the microphone (20). A feedback path (FP) is provided between the output terminal (A110) of the differential amplifier (110) and the second input terminal (E110b) of the differential amplifier (110). A charge supplying circuit (120) is coupled to the feedback path (FP) to supply an amount of the charge to the feedback path (FP) in dependence on the supply potential (VDDA). The amount of charge supplied to the feedback path may be dependent on a change of the supply potential (VDDA).

公开(公告)号：EP3062440A1

公开(公告)日：2016-08-31

申请号：EP14855915.6

申请日：2014-09-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： YANG, Dong-Il

IPC: H03F1/32

CPC classification number: H03F1/0216 ,  H02M1/44 ,  H02M3/156 ,  H03F1/0227 ,  H03F3/193 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45475 ,  H03F2200/102 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03K3/0377

Abstract: Various embodiments of the present invention relate to a power amplification device and method, wherein the power amplification device can comprise: a power amplifier; a switch mode converter for controlling a bias of the power amplifier; a comparator for providing a switching signal to the switch mode converter according to an envelope signal; and a control unit for determining whether a switching frequency of the switch mode converter is within a specific band and applying an offset to the switching frequency so as to deviate from the specific band if the switching frequency of the switch mode converter is within the specific band. Various other embodiments can be carried out.

Abstract translation: 本发明的各种实施例涉及功率放大装置和方法，其中功率放大装置可以包括：功率放大器; 用于控制功率放大器的偏置的开关模式转换器; 比较器，用于根据包络信号向切换模式转换器提供切换信号; 以及控制单元，用于确定开关模式转换器的开关频率是否在特定频带内，并且如果开关模式转换器的开关频率在特定频带内，则向开关频率施加偏移以偏离特定频带 。 可以执行各种其它实施例。

公开(公告)号：EP3050211A1

公开(公告)日：2016-08-03

申请号：EP14781362.0

申请日：2014-09-19

Applicant: Qualcomm Incorporated

Inventor： CHANG, Li-Chung ,  GUPTA, Bindu ,  GATHMAN, Timothy Donald ,  CHAMAS, Ibrahim Ramez

IPC: H03F3/45 ,  H03F1/02 ,  H03F3/72 ,  H03F1/42 ,  H03F1/22 ,  H03F3/193 ,  H03F1/08

CPC classification number: H03H11/0466 ,  H03F1/0277 ,  H03F1/08 ,  H03F1/223 ,  H03F3/193 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45932 ,  H03F3/72 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2200/165 ,  H03F2200/168 ,  H03F2200/171 ,  H03F2200/294 ,  H03F2200/336 ,  H03F2200/411 ,  H03F2200/429 ,  H03F2200/432 ,  H03F2200/534 ,  H03F2200/541 ,  H03F2200/543 ,  H03F2203/45352 ,  H03F2203/45396 ,  H03F2203/45506 ,  H03F2203/45511 ,  H03F2203/45512 ,  H03F2203/45516 ,  H03F2203/45521 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45528 ,  H03F2203/45594 ,  H03F2203/45618 ,  H03F2203/45702 ,  H03F2203/45728 ,  H03F2203/7215 ,  H03F2203/7221 ,  H03F2203/7236 ,  H03H2210/021 ,  H03H2250/00

Abstract: Techniques for designing baseband processing circuitry for radio IC's. In an aspect, techniques for differential-to-single-ended conversion in a baseband portion of the IC are disclosed to reduce the pin count and package size for RF IC's. In another aspect, the converter includes selectable narrowband and wideband amplifiers, wherein the wideband amplifiers may be implemented using transistor devices having smaller area than corresponding transistor devices of narrowband amplifiers. Further techniques for bypassing one or more elements, and for implementing a low-pass filter of the converter using an R-C filter network, are described.

Abstract translation: 无线电IC基带处理电路设计技术。 在一方面，公开了用于IC的基带部分中的差分到单端转换的技术，以减少RF IC的引脚数和封装尺寸。 在另一方面，转换器包括可选择的窄带和宽带放大器，其中可以使用具有比窄带放大器的相应晶体管器件小的面积的晶体管器件来实现宽带放大器。 描述用于绕过一个或多个元件以及用于使用R-C滤波器网络来实现转换器的低通滤波器的进一步的技术。

公开(公告)号：EP2852055A1

公开(公告)日：2015-03-25

申请号：EP14176166.8

申请日：2014-07-08

Applicant: Honeywell International Inc.

Inventor： Larson, Mark R.

IPC: H03F3/45

CPC classification number: H03F3/45071 ,  H03F3/45475 ,  H03F2200/252 ,  H03F2200/261 ,  H03F2200/447 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03F2203/45534 ,  H03F2203/45536 ,  H03F2203/45591 ,  H03F2203/45594 ,  H03F2203/45604 ,  H03F2203/45616 ,  H03F2203/45618 ,  H03G1/0088 ,  H03G3/3026

Abstract: A device comprises a first amplifier, a first resistive element that comprises a first resistor and a first dummy switch, a second amplifier, a second resistive element that comprises a second resistor and a second dummy switch, and a programmable resistive gain element operable to receive control input, wherein a resistance value of the programmable resistive gain element is based at least in part on the received control input, wherein a first end of the programmable resistive gain element is connected to both the first inverting input of the first amplifier and to a second end of the first dummy switch, and wherein a second end of the programmable resistive gain element is connected to both the second inverting input of the second amplifier and to a second end of the second dummy switch.

Abstract translation: 一种装置包括第一放大器，包括第一电阻器和第一虚拟开关的第一电阻元件，第二放大器，包括第二电阻器和第二虚拟开关的第二电阻元件以及可操作以接收的可编程电阻增益元件 控制输入​​，其中所述可编程电阻增益元件的电阻值至少部分地基于所接收的控制输入，其中所述可编程电阻增益元件的第一端连接到所述第一放大器的第一反相输入端， 第二虚拟开关的第二端，并且其中可编程电阻增益元件的第二端连接到第二放大器的第二反相输入端和第二虚拟开关的第二端。

公开(公告)号：EP2218173B1

公开(公告)日：2011-11-16

申请号：EP08851801.4

申请日：2008-11-21

Applicant: ST-Ericsson SA

Inventor： RYTER, Roland

IPC: H03C1/08

CPC classification number: H03F1/0211 ,  H03C1/08 ,  H03F3/24 ,  H03F3/45475 ,  H03F2200/324 ,  H03F2200/504 ,  H03F2203/45138 ,  H03F2203/45522 ,  H03F2203/45526 ,  H03F2203/45591

Abstract: Apparatus (170) for generating a modulation signal for use in modulating the power supply of a power amplifier (160) uses coarse and fine control for controlling the amplitude of the modulation signal, and thereby controlling the output power of the power amplifier (160). The modulation signal may be generated in the digital domain and converted to the analogue domain by a digital-to-analogue converter (20), with the digital-to-analogue converter (20) providing the fine control and a variable gain amplifier (40) providing the coarse control of the analogue signal.

公开(公告)号：EP3408936A2

公开(公告)日：2018-12-05

申请号：EP17703640.7

申请日：2017-01-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： VOGEL, Erich H ,  BUTLER, JOEL A. ,  REVELLI, Luca

IPC: H03F3/217 ,  H04S7/00 ,  H04R5/00 ,  H04R29/00 ,  H03G3/30 ,  H03G3/00 ,  H03F3/68 ,  H04R5/04 ,  H02M1/32 ,  H02M1/42 ,  H05B37/02 ,  H02M1/00 ,  H03F3/181

CPC classification number: H04R5/04 ,  H02M1/32 ,  H02M1/4225 ,  H02M1/4241 ,  H02M2001/007 ,  H02M2001/325 ,  H03F1/301 ,  H03F3/183 ,  H03F3/2173 ,  H03F3/45475 ,  H03F3/68 ,  H03F2200/03 ,  H03F2200/447 ,  H03F2200/468 ,  H03F2203/45512 ,  H03F2203/45522 ,  H03F2203/45528 ,  H03G3/007 ,  H03G3/3005 ,  H03G2201/208 ,  H03G2201/708 ,  H04R29/007 ,  H04R2420/05 ,  H04R2430/01 ,  H04S7/308 ,  H05B37/029

Abstract: An integrated cinema amplifier a power supply stage that distributes power over a plurality of channels for rendering immersive audio content in a surround sound listening environment. The amplifier automatically detects maximum and net power availability and requirements based on audio content by decoding audio metadata and dynamically adjusts gains to each channel or sets of channels based on content and operational/environmental conditions. A power supply stage provides power to drive a plurality of channels corresponding to speaker feeds to a plurality of speakers. The amplifier has a front panel having an LED array with each LED associated with a respective channel or group of channels of the multi-channel amplifier, and a control unit configured to light the LEDs according to display patterns based on operating status or error conditions of the amplifier.