公开(公告)号：US07733950B2

公开(公告)日：2010-06-08

申请号：US11318852

申请日：2005-12-28

Applicant: Hyung-Jong Ko

Inventor： Hyung-Jong Ko

IPC: H03H7/30

CPC classification number: H04B3/145 ,  G11B20/10009 ,  G11B20/10046 ,  H03H11/0444 ,  H03H11/0472 ,  H03H11/08

Abstract: Equalizers and methods of equalizing, wherein an equalizer may include includes n (where n is an integer ≧) biquad circuits each include an input node, a biquad band pass node and a biquad low pass node, a first summing circuit summing an output of the biquad band pass node of the nth biquad circuit and an output of the biquad low pass node of the nth biquad circuit, a second summing circuit subtracting the output of the biquad low pass node of the (n−1)th biquad circuit from the output of the first summing circuit and amplifying the summed result by a constant, and a third summing circuit summing an output of the second summing circuit and the output of the biquad low pass node of the nth biquad circuit, wherein the n biquad circuits are Gm-C biquad circuits each having transconductors connected in a self-feedback configuration to the biquad band pass node of the corresponding n biquad circuit. The equalizer may increase a filter bandwidth and/or maintain a specific boosting gain while reducing circuit size.

Abstract translation: 均衡器和均衡方法，其中均衡器可以包括n（其中n是整数≥）二进制电路各自包括输入节点，双二进制带通节点和双二阶低通节点，第一求和电路将 第n个二进制电路的双二进制带通节点和第n个二进制电路的二进制低通节点的输出，第二加法电路从输出中减去第（n-1）个二进制电路的二进制低通节点的输出 以及将第二加法电路的输出与第n个二进制电路的二叉低通节点的输出相加的第三求和电路，其中n个二进制电路是Gm- 各自具有以自反馈配置连接到相应的n二进制电路的二进制带通节点的跨导体的C二极二极管。 均衡器可以增加滤波器带宽和/或维持特定的升压增益同时减小电路尺寸。

公开(公告)号：US20070096799A1

公开(公告)日：2007-05-03

申请号：US11336121

申请日：2006-01-20

Applicant: Emmanuel Marais

Inventor： Emmanuel Marais

IPC: H04B1/10

CPC classification number: H03H11/04 ,  H03H11/08 ,  H03H2011/0494 ,  H03L7/06 ,  H03L7/0805

Abstract: A complex band-pass filter. The complex band-pass filter includes a band-pass filter coupled to a voltage source. The band-pass filter includes a first plurality of transconductors that receives a first voltage, where the first voltage controls the center frequency of the band-pass filter. The band-pass filter also includes a second plurality of transconductors, wherein the second plurality of transconductors receives a second voltage, where the second voltage controls the bandwidth of the band-pass filter. According to the system disclosed herein, the complex band-pass filter has automatic frequency tuning against process variations, a programmable center frequency, and a programmable bandwidth. Providing programmability to the center frequency (Fc) and bandwidth (BW) offers an alternative for multi-protected standards with different channels (Fc changes) and for time acquisition improvements (BS changes).

公开(公告)号：US07196574B1

公开(公告)日：2007-03-27

申请号：US11157945

申请日：2005-06-22

Applicant: Adam S. Vishinsky

Inventor： Adam S. Vishinsky

IPC: H03K5/00

CPC classification number: H03H11/22 ,  H03H11/0444 ,  H03H11/08 ,  H03H2011/0494

Abstract: Direct incorporation of transmission zeros into a continuous-time active complex BP filter transfer function yields a filter having much sharper roll-off than that of an all-pole filter. The ladder filter is constructed using transconductors and capacitors only. The filter center frequency, its bandwidth and positions of transmission zeros can be electronically varied using tunable transconductors. The positions of zeros are changed by modifying cross-coupled differential transconductors connected between capacitors in parallel with the series inductors. Since all transconductors used in the filter are electronically tunable an automatic tuning system conveniently adjusts the filter center-frequency and its Q-factor.

Abstract translation: 将传输零直接并入连续时间有源复合BP滤波器传递函数产生的滤波器比全极滤波器具有更尖锐的滚降。 梯形滤波器仅用跨导电容器和电容器构成。 滤波器中心频率，其带宽和传输零点的位置可以使用可调谐的跨导体进行电子变化。 通过修改与串联电感器并联的电容器之间的交叉耦合差动跨导体来改变零点的位置。 由于滤波器中使用的所有跨导体都是电子可调谐的，自动调谐系统方便地调节滤波器中心频率及其Q因子。

公开(公告)号：US20190097608A1

公开(公告)日：2019-03-28

申请号：US15712406

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Timothy Donald GATHMAN ,  Lai Kan LEUNG ,  Chirag Dipak PATEL ,  Rajagopalan RANGARAJAN

IPC: H03H11/42 ,  H04B1/48 ,  H04B5/00

CPC classification number: H03H11/08 ,  H03H11/0444 ,  H03H11/342 ,  H03H11/42 ,  H03H2011/0494 ,  H04B1/48 ,  H04B5/0012 ,  H04B5/0075

Abstract: Certain aspects of the present disclosure relate to multi-band filter architectures and methods for filtering signals using the multi-band filter architectures. One example multi-band filter generally includes a transconductance-capacitance (gm-C) filter and a reconfigurable load impedance coupled to an output of the gm-C filter, the reconfigurable load impedance comprising a first gyrator circuit coupled to a second gyrator circuit.

公开(公告)号：US20060140263A1

公开(公告)日：2006-06-29

申请号：US11318852

申请日：2005-12-28

Applicant: Hyung-Jong Ko

Inventor： Hyung-Jong Ko

IPC: H03K5/159

CPC classification number: H04B3/145 ,  G11B20/10009 ,  G11B20/10046 ,  H03H11/0444 ,  H03H11/0472 ,  H03H11/08

Abstract: Equalizers and methods of equalizing, wherein an equalizer may include includes n (where n is an integer ≧) biquad circuits each include an input node, a biquad band pass node and a biquad low pass node, a first summing circuit summing an output of the biquad band pass node of the nth biquad circuit and an output of the biquad low pass node of the nth biquad circuit, a second summing circuit subtracting the output of the biquad low pass node of the (n-1)th biquad circuit from the output of the first summing circuit and amplifying the summed result by a constant, and a third summing circuit summing an output of the second summing circuit and the output of the biquad low pass node of the nth biquad circuit, wherein the n biquad circuits are Gm-C biquad circuits each having transconductors connected in a self-feedback configuration to the biquad band pass node of the corresponding n biquad circuit. The equalizer may increase a filter bandwidth and/or maintain a specific boosting gain while reducing circuit size.

Abstract translation: 均衡器和均衡方法，其中均衡器可以包括n（其中n是整数> =）二进制电路各自包括输入节点，双二进制带通节点和双二进制低通节点，第一求和电路将 第n个二进制电路的双二进制带通节点和第n个二进制电路的二进制低通节点的输出，第二加法电路从第（n-1）个二进制电路的双二阶低通节点的输出减去第（n-1） 输出第一求和电路，并将求和结果乘以常数;以及第三求和电路，将第二求和电路的输出与第n个二进制电路的双二阶低通节点的输出相加，其中n个二进制电路为Gm -C双二阶电路各自具有以自反馈配置连接到相应的n二进制电路的二进制带通节点的跨导体。 均衡器可以增加滤波器带宽和/或维持特定的升压增益同时减小电路尺寸。

公开(公告)号：US06577212B1

公开(公告)日：2003-06-10

申请号：US09617109

申请日：2000-07-14

Applicant: Sven Mattisson ,  Henrik Geis

Inventor： Sven Mattisson ,  Henrik Geis

IPC: H03H1142

CPC classification number: H03H11/42 ,  H03H11/08

Abstract: The invention relates to an integrated gyrator structure, in which each transistor in the gyrator core (preferably MOS devices) has series feedback associated therewith. This allows for compensation over a large bandwidth of the effects of channel delay in the MOS transistors.

Abstract translation: 本发明涉及一种集成回转器结构，其中回转器芯（优选MOS器件）中的每个晶体管具有与其相关联的串联反馈。 这允许在MOS晶体管的通道延迟的影响的大带宽上进行补偿。

公开(公告)号：US06184747B2

公开(公告)日：2001-02-06

申请号：US09311105

申请日：1999-05-13

Applicant: Michael A. Helgeson ,  Keith R. Maile

Inventor： Michael A. Helgeson ,  Keith R. Maile

IPC: H03B100

CPC classification number: H03H11/08

Abstract: A differential gyrator based filter is disclosed that preferably has a first gyrator connected to the positive input signal of the differential input signal and a second gyrator connected to the negative input signal of the differential input signal. A load capacitor is connected between the load terminals of the first gyrator and second gyrator, which minimizes the total load capacitance required for the gyrator based filter. This implementation is believed to increase the overall density, reliability, yield, signal-to-noise ratio and dynamic range of the gyrator based filter and related circuitry.

Abstract translation: 公开了一种基于差分回转器的滤波器，其优选地具有连接到差分输入信号的正输入信号的第一回转器和连接到差分输入信号的负输入信号的第二回转器。 负载电容器连接在第一回转器和第二回转器的负载端子之间，这使得基于回转器的滤波器所需的总负载电容最小化。 据信这种实现可以提高基于回转器的滤波器和相关电路的总体密度，可靠性，产量，信噪比和动态范围。

公开(公告)号：US3713050A

公开(公告)日：1973-01-23

申请号：US3713050D

申请日：1971-05-11

Applicant: BELL TELEPHONE LABOR INC

Inventor： GOLEMBESKI J

IPC: H03H11/02 ,  H03H11/08 ,  H03H7/44

CPC classification number: H03H11/02 ,  H03H11/08

Abstract: In an integrable circuit transformer employing cascade-connected gyrators, frequency response characteristics and the effective turns ratio are tailored and controlled by one or more two-port coupling networks that may be connected between the circuit input and the primary gyrator, between the two gyrators or between the secondary gyrator and the circuit output.

Abstract translation: 在采用级联连接的回转器的可积分电路变压器中，频率响应特性和有效匝数比由一个或多个可连接在电路输入端和初级回转器之间，两个回转器之间的两端口耦合网络进行调整和控制， 在二次回转器和电路输出之间。

公开(公告)号：US20170229808A1

公开(公告)日：2017-08-10

申请号：US15515292

申请日：2015-09-17

Applicant: AutoNetworks Technologies, Ltd. ,  Sumitomo Wiring Systems, Ltd. ,  SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Junichi Mukuno ,  Katsuhiko Aizawa ,  Kenichi Kitaoka ,  Shuzo Yukawa

IPC: H01R13/58 ,  H01R13/648

CPC classification number: H01R13/5845 ,  H01R13/4361 ,  H01R13/5202 ,  H01R13/5219 ,  H01R13/533 ,  H01R13/58 ,  H01R13/633 ,  H01R13/6581 ,  H01R13/6599 ,  H01R43/24 ,  H01R2201/26 ,  H03H11/08

Abstract: A connector C to be mounted on a case of a device includes a coated wire 10 formed such that a core 11 is coated with an insulation coating 12, a terminal fitting 20 to be fit and connected to a mating terminal, a flexible conductor 15 interposed between the terminal fitting 20 and an end of the coated wire 10, and a housing 30 made of synthetic resin and accommodating the terminal fitting 20 together with the flexible conductor 15. The core 11 of the coated wire 10 is provided with a core fixing portion 25 integrated with the core 11 and the core fixing portion 25 is embedded in the housing 30 by molding.

公开(公告)号：US07265609B2

公开(公告)日：2007-09-04

申请号：US10557346

申请日：2004-05-14

Applicant: John B. Hughes

Inventor： John B. Hughes

IPC: H03K5/00

CPC classification number: H03F3/45991 ,  H03F2200/294 ,  H03F2200/372 ,  H03H11/0444 ,  H03H11/08

Abstract: A transconductor circuit, such as a gyrator filter, comprises an arrangement of balanced class AB transconductors, capacitors and floating MOS resistors formed by MOS transistors operating in their triode region. Tuning of the filter is effected by varying a common supply rail voltage. The circuit includes a means for producing a voltage offset from the common mode voltage of the class AB transconductors. The offset voltage is supplied to a parallel arrangement of a class AB transconductor having a transconductance and the source-drain path of a MOS transistor emulating a MOS resistor. The current output of the parallel arrangement is integrated and supplied as a control voltage to the gate electrode of the MOS transistor. By loop action the control voltage is adjusted and supplied to the floating MOS resistors.

Abstract translation: 诸如回转器滤波器的跨导电路包括平衡AB类跨导体，电容器和由其三极管区域中工作的MOS晶体管形成的浮动MOS电阻器的布置。 滤波器的调谐通过改变共同的电源轨电压来实现。 该电路包括用于产生与AB类跨导体的共模电压的偏移电压的装置。 偏移电压被提供给具有跨导的AB类跨导体并且模拟MOS电阻的MOS晶体管的源极 - 漏极路径的并联布置。 并联装置的电流输出被集成并作为控制电压提供给MOS晶体管的栅电极。 通过循环动作，控制电压被调整并提供给浮动MOS电阻。