公开(公告)号：WO2004082324A3

公开(公告)日：2005-03-10

申请号：PCT/US2004007171

申请日：2004-03-10

Applicant: KNOWLES ELECTRONICS LLC ,  BOOR STEVEN E

Inventor： BOOR STEVEN E

IPC: H03F3/50 ,  H03F13/00 ,  H03F99/00 ,  H03H1/02 ,  H03H7/06 ,  H03H11/12 ,  H04R1/04 ,  H04R3/04 ,  H04R25/00 ,  H04R29/00 ,  H04R3/00

CPC classification number: H04R29/006 ,  H03F3/505 ,  H03F13/00 ,  H03F21/00 ,  H03H7/25 ,  H03H2210/043 ,  H04R1/04 ,  H04R3/04 ,  H04R25/00 ,  H04R25/407

Abstract: A method and system for adjusting the frequency response characteristics of a transducer assembly (312) is disclosed. The transducer assembly (312) includes a modifiable buffer circuit (100) being generally enclosed within a housing (314). Electrical signal connections for modifying the operating state of the modifiable buffer circuit (100) are accessible outside the housing (314). The modifiable buffer circuit (100) further includes a plurality of signal inputs (234) and outputs (230), the plurality of signal inputs (234) are accessible from outside the housing. A predetermined relationship exists between the plurality of signal inputs (234) and the plurality of outputs (230). A resistor network (224) is operably connected to the plurality of outputs (230) wherein a portion of the resistor network (224) is operably disconnected from a filter network (218) in response to the plurality of signal inputs (234).

Abstract translation: 公开了一种用于调整换能器组件（312）的频率响应特性的方法和系统。 换能器组件（312）包括通常封装在外壳（314）内的可修改缓冲电路（100）。 用于修改可修改缓冲电路（100）的操作状态的电信号连接可在外壳（314）外面访问。 可修改缓冲电路（100）还包括多个信号输入（234）和输出（230），所述多个信号输入（234）可从外壳外部接近。 在多个信号输入（234）和多个输出（230）之间存在预定的关系。 电阻器网络（224）可操作地连接到多个输出（230），其中响应于多个信号输入（234），电阻器网络（224）的一部分可操作地与滤波器网络（218）断开。

公开(公告)号：WO2005002050A1

公开(公告)日：2005-01-06

申请号：PCT/DK2003/000447

申请日：2003-06-27

Applicant: TC ELECTRONIC A/S ,  FREDERIKSEN, Thomas, Mansachs ,  PEDERSEN, Kim, Rishøj

Inventor： FREDERIKSEN, Thomas, Mansachs ,  PEDERSEN, Kim, Rishøj

IPC: H03H11/12

CPC classification number: H03F1/08 ,  H03F3/217 ,  H03F2200/78

Abstract: The invention relates to a self-oscillating circuit comprising comparator means (CM) comprising at least one input means (IM) and at least one output means (OM), at least one of said at least one output means (OM) is coupled to at least one of said at least one input means (IM) via at least one filtering means (FM), said at least one filtering means (FM) at least partly comprising demodulation means (DM), wherein said filtering means (FM) is of at least fifth order.

Abstract translation: 本发明涉及一种自振荡电路，其包括比较器装置（CM），其包括至少一个输入装置（IM）和至少一个输出装置（OM），所述至少一个输出装置（OM）中的至少一个耦合到 经由至少一个滤波装置（FM）的所述至少一个输入装置（IM）中的至少一个，所述至少一个滤波装置（FM）至少部分地包括解调装置（DM），其中所述滤波装置 至少五级。

公开(公告)号：WO2003003575A1

公开(公告)日：2003-01-09

申请号：PCT/JP2002/002967

申请日：2002-03-27

Applicant: オー・エイチ・ティー株式会社 ,  中村 正孝 ,  玄場 貴之 ,  青森 裕一郎 ,  山岡 秀嗣

Inventor： 中村 正孝 ,  玄場 貴之 ,  青森 裕一郎 ,  山岡 秀嗣

IPC: H03H11/12

CPC classification number: H03H11/1213 ,  H03H11/1291

Abstract: A low−noise active RC signal processing circuit having a transfer function the loop gain of which is varied so that the transmission gain of the negative feedback over the entire frequency band is below the forward gain, a low−Q−element sensitivity, and low−noise characteristics. A low−noise active RC signal processing circuit includes a forward circuit for outputting an input signal with a predetermined gain and a feedback circuit for imparting a predetermined transfer characteristic to the output of the forward circuit and feeding the output back to the input signal. The transfer impedance characteristics of the low−noise active RC signal processing circuit is such that the transmission gain is below a predetermined one. The forward circuit is a current−controlled voltage output circuit comprising a grounded−base transistor to which an input signal is inputted and an emitter−follower transistor that outputs a voltage and having a transfer impedance determining a predetermined gain. The current−controlled voltage output circuit can be composed of an operational amplifier. The transfer impedance characteristic achieves various types of filter such as a bandpass filter, low−pass filter, and a high−pass filter.

Abstract translation: 具有传递函数的低噪声有源RC信号处理电路，其环路增益被改变，使得整个频带上的负反馈的传输增益低于正向增益，低Q元件灵敏度和低 气味特征 低噪声有源RC信号处理电路包括用于输出具有预定增益的输入信号的正向电路和用于向正向电路的输出赋予预定传输特性并将输出反馈给输入信号的反馈电路。 低噪声有源RC信号处理电路的传输阻抗特性使传输增益低于预定传输阻抗特性。 正向电路是电流控制的电压输出电路，其包括输入信号的接地基极晶体管和输出电压并具有确定预定增益的传输阻抗的发射极跟随器晶体管。 电流控制的电压输出电路可以由运算放大器组成。 传输阻抗特性实现了各种类型的滤波器，如带通滤波器，低通滤波器和高通滤波器。

公开(公告)号：WO2002097985A1

公开(公告)日：2002-12-05

申请号：PCT/IB2002/001946

申请日：2002-05-29

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS CORPORATE INTELLECTUAL PROPERTY GMBH ,  HILDEBRANDT, Guenter

Inventor： HILDEBRANDT, Guenter

IPC: H03H11/12

CPC classification number: H03H11/1282 ,  H03H11/1291

Abstract: The invention relates to a circuit arrangement, the use of such a circuit arrangement, and a method for control of a deviation of a time constant of analog filters, in particular high pass filters, low pass filters, and band pass filters comprising filter means for filtering electric signals, where said filter means comprise ohmic (R1) and capacitive (C1) components substantially determining said time constant, first compensation means (10), compensating capacitive tolerances of said capacitive components (C1) with at least one compensating capacitive component (C0). To compensate a time constant of an analog filter efficiently, an integrated circuit where said first compensation means (10) are applied on an integrated circuit, where said integrated circuit comprises a phase locked loop (PD, LF, VCO), and where said first compensation means (10) influences said phase locked loop (PD, LF, VCO) in conformance with a control deviation of said compensating capacitive component (C0) for compensation of said capacitive tolerance, is proposed.

Abstract translation: 本发明涉及电路装置，这种电路装置的使用以及用于控制模拟滤波器，特别是高通滤波器，低通滤波器和带通滤波器的时间常数偏差的方法，该滤波器包括滤波器装置 滤波电信号，其中所述滤波器装置包括基本上确定所述时间常数的欧姆（R1）和电容（C1）分量，第一补偿装置（10），用至少一个补偿电容分量补偿所述电容部件（C1）的电容容差 C0）。 为了有效地补偿模拟滤波器的时间常数，其中所述第一补偿装置（10）施加在集成电路上的集成电路，其中所述集成电路包括锁相环（PD，LF，VCO），并且其中所述第一 提出了补偿装置（10）根据所述补偿电容部件（C0）的控制偏差来影响所述锁相环（PD，LF，VCO），以补偿所述容性公差。

公开(公告)号：WO02056470A1

公开(公告)日：2002-07-18

申请号：PCT/US2002/004669

申请日：2002-01-10

IPC: H03B1/00 ,  H03F1/00 ,  H03G1/04 ,  H03G3/00 ,  H03G5/00 ,  H03G7/00 ,  H03H11/04 ,  H03H11/12 ,  H03K5/00

CPC classification number: H03G1/04 ,  H03G3/001 ,  H03G7/00 ,  H03H11/04 ,  H03H11/1252 ,  H03H11/1256 ,  H03H11/126 ,  H03H11/1291

Abstract: A signal processing system (100) comprises an input terminal (102), and a main path having a main filter input gain unit (126) coupled to said input terminal (102), a main filter (132) and an output gain unit (138). An auxiliary path includes an auxiliary filter input gain unit (106) coupled to the input terminal (102), an auxiliary filter (112) and an auxiliary filter output gain unit (118). An adder (144) is coupled to the output gain units (118, 138) for generating an output signal to an output terminal (148). The gains of the gain units are adjusted by a control unit (18) responsive to a detecting signal from a detector (160).

Abstract translation: 信号处理系统（100）包括输入端（102），以及具有耦合到所述输入端（102）的主滤波器输入增益单元（126）的主路径，主滤波器（132）和输出增益单元 138）。 辅助路径包括耦合到输入端子（102）的辅助滤波器输入增益单元（106），辅助滤波器（112）和辅助滤波器输出增益单元（118）。 加法器（144）耦合到输出增益单元（118,138），用于产生到输出端子（148）的输出信号。 响应于来自检测器（160）的检测信号，控制单元（18）调整增益单元的增益。

公开(公告)号：WO0124363A3

公开(公告)日：2001-10-18

申请号：PCT/EP0009222

申请日：2000-09-21

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： BHANDARI SANJAY M

IPC: H03H11/04 ,  G11B5/00 ,  H03F3/45 ,  H03H11/12

CPC classification number: H03F3/45179 ,  G11B2005/001 ,  H03F3/45098 ,  H03F3/45941 ,  H03F2203/45466 ,  H03F2203/45506 ,  H03F2203/45631 ,  H03F2203/45634 ,  H03F2203/45646 ,  H03F2203/45702 ,  H03F2203/45726 ,  H03H11/1291

Abstract: An integrated circuit includes a filter with switched capacitors to dynamically adjust a corner frequency of the filter. Such dynamically adjustable filters are typically included in circuits to reduce noise, and consequently such filters should not themselves generate noise. An equalization circuit is included in the filter to equalize the potential on each terminal of the switched capacitors prior to being switched into circuit, thereby removing a source of transient current. Another source of noise is a transient current induced by the application of control signals to the transistors used to switch the capacitors into circuit. A compensation circuit is included which generates a compensation current of opposite sense and substantially the same magnitude as the induced transient currents, to thereby effectively cancel noise at the filter output.

Abstract translation: 集成电路包括具有开关电容器的滤波器以动态地调整滤波器的转角频率。 这种动态可调的滤波器通常包括在电路中以减少噪声，因此这样的滤波器本身不应该产生噪声。 在滤波器中包括均衡电路，以便在切换到电路之前对开关电容器的每个端子上的电位进行均衡，从而去除瞬态电流源。 噪声的另一个来源是通过将控制信号施加到用于将电容器切换到电路中的晶体管而引起的瞬态电流。 包括补偿电路，其产生与感应瞬态电流相反的和相当大小的补偿电流，从而有效地消除滤波器输出处的噪声。

公开(公告)号：WO01050599A2

公开(公告)日：2001-07-12

申请号：PCT/US2000/035426

申请日：2000-12-28

IPC: H03H11/12 ,  H03H

CPC classification number: H03H11/126 ,  H03H11/1286

Abstract: The present invention provides an active low-pass filter system including a low-pass filter circuit (22, 24, 26, 28, 30) and at least one frequency-rejecting network (20) coupled to the low-pass filter circuit. The frequency-rejecting network (20) is included in a resistive forward signal flow branch of the low-pass filter. The present invention also provides a power amplifier system (40) for driving a load (45). The power amplifier system (40) includes a pulse width modulation circuit (42) which creates ripple spectra, an error amplifier and modulator circuit (43), and a demoldulation filter (47) connected in series, and a feedback control loop coupled to the pulse modulation circuit (42) and including an active low-pass filter (44, 46) having a feedback demodulation filter (44) and an isolated-integrator frequency-rejecting network (20).

Abstract translation: 本发明提供一种有源低通滤波器系统，其包括低通滤波器电路（22,24,26,28,30）和耦合到低通滤波器电路的至少一个频率抑制网络（20）。 频率抑制网络（20）包括在低通滤波器的电阻正向信号流分支中。 本发明还提供一种用于驱动负载（45）的功率放大器系统（40）。 功率放大器系统（40）包括产生纹波光谱的脉宽调制电路（42），误差放大器和调制器电路（43）和串联连接的解模滤波器（47），以及耦合到 脉冲调制电路（42），并且包括具有反馈解调滤波器（44）和隔离积分器频率抑制网络（20）的有源低通滤波器（44,46）。

公开(公告)号：WO0062419A3

公开(公告)日：2001-01-04

申请号：PCT/US0009842

申请日：2000-04-12

Applicant: BROADCOM CORP ,  BEHZAD ARYA A

Inventor： BEHZAD ARYA A

IPC: H01F17/00 ,  H01L23/522 ,  H01L27/08 ,  H03B5/12 ,  H03B5/36 ,  H03D7/16 ,  H03D7/18 ,  H03G1/00 ,  H03H11/12 ,  H03J3/08 ,  H03J3/18 ,  H03L7/10 ,  H03L7/23

CPC classification number: H03L7/23 ,  H01F17/0013 ,  H01F2017/0053 ,  H01F2021/125 ,  H01L23/5227 ,  H01L27/08 ,  H01L2924/0002 ,  H01L2924/3011 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/364 ,  H03D7/161 ,  H03D7/18 ,  H03G1/0029 ,  H03H11/1291 ,  H03J3/08 ,  H03J3/185 ,  H03J2200/10 ,  H03L7/10 ,  H01L2924/00

Abstract: An integrated receiver with channel selection and image rejection is substantially implemented on a single CMOS integrated circuit. A receiver front end provides programable attenuation and a programable gain low noise amplifier. LC filters integrated onto the substrate in conjunction with image reject mixers provide image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. Active filters utilize multitrack spiral inductors with shields to increase circuit Q. Frequency planning provides additional image rejection. Local oscillator signal generation methods on chip reduce distortion. A PLL generates needed out of band LO signals. Direct synthesis generates in band LO signals. PLL VCOs are centered automatically. A differential crystal oscillator provides a frequency reference. Differential signal transmission throughout the receiver is used. ESD protection is provided by a pad ring and ESD clamping structure. Shunts utilize a gate boosting at each pin to discharge ESD build up. An IF VGA utilizes distortion cancellation achieved with cross coupled differential pair amplifiers having their Vds dynamically modified in conjunction with current steering of the differential pairs sources.

Abstract translation: 具有通道选择和图像抑制的集成接收器基本上在单个CMOS集成电路上实现。 接收机前端提供可编程衰减和可编程增益低噪声放大器。 与图像抑制混合器一起集成到衬底上的LC滤波器提供图像频率抑制。 过滤器调谐和电感Q补偿温度在芯片上执行。 有源滤波器利用具有屏蔽的多轨螺旋电感器来增加电路Q.频率规划提供了额外的图像抑制。 本地振荡器信号产生方法在芯片上减少失真。 PLL产生所需的带外LO信号。 直接合成产生带内LO信号。 PLL VCO自动居中。 差分晶体振荡器提供频率参考。 使用整个接收机的差分信号传输。 ESD保护由衬垫环和ESD夹紧结构提供。 分流器利用每个引脚上的门极升压来放电ESD积聚。 IF VGA利用交叉耦合差分对放大器实现的失真消除，其具有与差分对源的电流转向结合动态修改的Vds。

公开(公告)号：WO00046936A1

公开(公告)日：2000-08-10

申请号：PCT/DE2000/000349

申请日：2000-02-04

IPC: H03H11/12 ,  H04B3/20 ,  H04B3/23 ,  H04M1/00 ,  H04B1/58

CPC classification number: H04B3/23

Abstract: The invention relates to an analogue echo filter for a modem which is supplied with an analogue transmission signal. According to the invention a passive analogue prefilter and an active analogue filter with adjustable transmission function are provided for. The transmission function of the active analogue filter can preferably be switched between a first-order transmission function and a second-order transmission function.

Abstract translation: 本发明涉及一种用于调制解调器的模拟传输信号被提供给将模拟回声滤波器。 根据本发明，无源模拟预过滤器和有源模拟滤波器，其传递函数是可调的，被提供。 优选地，第一级的传递函数和一个二阶传递函数之间的有源模拟滤波器的传递函数是可切换的。

公开(公告)号：WO00045399A1

公开(公告)日：2000-08-03

申请号：PCT/US2000/002138

申请日：2000-01-28

IPC: H01F17/00 ,  H01L23/50 ,  H01L23/522 ,  H01L23/60 ,  H01L23/62 ,  H01L27/02 ,  H01L27/08 ,  H03B5/12 ,  H03B5/36 ,  H03D7/16 ,  H03D7/18 ,  H03G1/00 ,  H03H11/12 ,  H03J1/00 ,  H03J3/04 ,  H03J3/08 ,  H03J3/18 ,  H03L7/10 ,  H03L7/23 ,  H04B1/28

CPC classification number: H01L23/50 ,  H01F17/0006 ,  H01F17/0013 ,  H01F2017/0053 ,  H01F2021/125 ,  H01L23/5227 ,  H01L23/60 ,  H01L27/0248 ,  H01L27/0251 ,  H01L27/08 ,  H01L2924/0002 ,  H01L2924/3011 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/364 ,  H03D7/161 ,  H03D7/18 ,  H03G1/0029 ,  H03H11/1291 ,  H03J1/0075 ,  H03J3/04 ,  H03J3/08 ,  H03J3/185 ,  H03J2200/10 ,  H03L7/10 ,  H03L7/23 ,  H04B1/28 ,  H01L2924/00

Abstract: An integrated circuit inductor comprises a spiral pattern disposed upon a substrate. The track of the spiral designed is divided into multiple tracks to form a multi-track-inductor. The individual tracks are disposed side by side and in different layers. Tracks that are aligned vertically are coupled by feed throughs, or vias. Multiple vias are used along the length of each of the multiple tracks. Tracks disposed in the same layer are joined together at their beginning and at their termination. A pattern shield fabricated from conductive fingers of n+saliceded material separated by non conducting polysilicon filling the gaps between the fingers. The conductive fingers are coupled together in groups, which are in turn tied to a single point ground. In tying the groups together a gap in the conducting path is provided to prevent group loop currents. The shield is disposed between the multi-track inductor and the substrate.

Abstract translation: 集成电路电感器包括设置在基板上的螺旋图案。 螺旋设计的轨道被分成多个轨道以形成多轨电感器。 各个轨道并排设置在不同的层中。 垂直对齐的轨道通过馈通或通孔耦合。 沿着多个轨道的每一个的长度使用多个通孔。 设置在同一层中的轨道在其开始和终止时连接在一起。 由n +盐化材料的导电指状物制成的图案屏蔽层由非导电多晶硅分离，填充指状物之间的间隙。 导电指状物被分组连接在一起，它们依次连接到单点接地。 在将组合在一起时，提供导电路径中的间隙以防止组回路电流。 屏蔽设置在多轨电感器和衬底之间。