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1. 发明授权

EP1354425B1 FILTERANORDNUNG 有权
公开(公告)号：EP1354425B1
公开(公告)日：2005-08-03
申请号：EP02714096.1
申请日：2002-01-21
申请人： Vacuumschmelze GmbH & Co. KG
发明人： HEUMANN, Dirk
IPC分类号： H04B3/00
CPC分类号： H03H11/28 , H03H7/075 , H03H7/1758 , H03H7/38 , H03H7/427 , H03H11/10

2. 发明公开

EP0015719A1 Improvements in or relating to bandstop filters 有权转让
标题翻译： Bandsperrfilter。
公开(公告)号：EP0015719A1
公开(公告)日：1980-09-17
申请号：EP80300599.0
申请日：1980-02-28
申请人： THE POST OFFICE
发明人： Greaves, Alan John , Greenaway, Philip Ernest , Nightingale, Charles
IPC分类号： H03H11/10 , H03H11/52
CPC分类号： H03H11/10 , H03H11/52 , H03H11/525
摘要： A filter network that exhibits a bandstop response comprises a network of basically low-pass or high-pass structure. The network is developed by choosing a bandstop transfer function, a fourth-order elliptic is disclosed, which is converted to a low-pass function. This function describes a passive low-pass LC ladder network including a negative impedance element. A Bruton transformation is applied to the passive LC network to give an active version including an ungrounded negative resistance network (24) in a series arm and frequency-dependent negative resistances (36) and (38) in shunt arms without requiring inductance coils for its implementation.

3. 发明公开

EP2695296A4 NON FOSTER CIRCUIT 有权
标题翻译：非福斯特双电路
公开(公告)号：EP2695296A4
公开(公告)日：2014-11-05
申请号：EP12768357
申请日：2012-04-06
申请人： HRL LAB LLC
发明人： HITKO DONALD A , WHITE CARSON R , YUNG MICHAEL W , MATTHEWS DAVID S , MORTON SUSAN L , MAY JASON W , COLBURN JOSEPH
IPC分类号： H03F1/56 , H03H11/44 , H03H11/48 , H04B1/04 , H04B1/18
CPC分类号： H03H11/10 , H03F1/56 , H03F2200/369 , H03H11/44 , H03H11/48 , H04B1/0458 , H04B1/18
摘要： A differential circuit topology that produces a tunable floating negative inductance, negative capacitance, negative resistance/conductance, or a combination of the three. These circuits are commonly referred to as “non-Foster circuits.” The disclosed embodiments of the circuits comprises two differential pairs of transistors that are cross-coupled, a load immittance, multiple current sources, two Common-Mode FeedBack (CMFB) networks, at least one tunable (variable) resistance, and two terminals across which the desired immittance is present. The disclosed embodiments of the circuits may be configured as either a Negative Impedance Inverter (NII) or a Negative Impedance Converter (NIC) and as either Open-Circuit-Stable (OCS) and Short-Circuit-Stable (SCS).

4. 发明公开

EP2792072A1 ACTIVE FILTER WITH DUAL RESPONSE 审中-公开
标题翻译：带双反应有源滤波
公开(公告)号：EP2792072A1
公开(公告)日：2014-10-22
申请号：EP12806379.9
申请日：2012-12-06
申请人： Thomson Licensing
发明人： LABABIDI, Raafat , LINTIGNAT, Julien , LO HINE TONG, Dominique , LOUZIR, Ali , BARELAUD, Bruno , JARRY, Bernard
IPC分类号： H03H7/01 , H03H7/03 , H03H7/09 , H01P1/203
CPC分类号： H03H11/10 , H03H7/0123 , H03H7/03 , H03H7/09 , H03H7/1758 , H03H7/1775 , H03H2007/013 , H03H2011/0488 , H03H2250/00
摘要： Active filter with dual response, comprising a main conductive line between an input port (1) and an output port (2), consisting of an input conductive section, an output conductive section, and an inductance network in series between the input and output conductive sections, the inductance network being coupled to LC resonators, an LC resonator being connected to each junction point between two network inductances, and at least one negative resistance (RN) in series with one of the resonators, wherein the main conductive line, the LC resonators and the negative resistance(s) form an active low-pass filter with a cut-off frequency fc, wherein the active filter comprises a conductive auxiliary line (20), having one end (21) at the filter input side, connected to an electrical ground, and forming a resonator with a resonant frequency fr, less than the cut-off frequency fc of the low-pass filter, the conductive auxiliary line extending from this end, parallel to the main conductive line, and forming by coupling with the main conductive line a rejection filter tuned substantially at said resonant frequency in the low-pass filter bandwidth.

5. 发明授权

EP0015719B1 Improvements in or relating to bandstop filters 有权转让
标题翻译：改进或相关于带式过滤器
公开(公告)号：EP0015719B1
公开(公告)日：1983-06-22
申请号：EP80300599.0
申请日：1980-02-28
申请人： THE POST OFFICE
发明人： Greaves, Alan John , Greenaway, Philip Ernest , Nightingale, Charles
IPC分类号： H03H11/10 , H03H11/52
CPC分类号： H03H11/10 , H03H11/52 , H03H11/525

6. 发明公开

EP3080909A4 HIGHER-ORDER LOAD CIRCUIT 有权转让
标题翻译： LASTKREISHÖHERERORDNUNG
公开(公告)号：EP3080909A4
公开(公告)日：2017-08-30
申请号：EP14870190
申请日：2014-11-26
申请人： NOKIA TECHNOLOGIES OY
发明人： YLÄMURTO TOMMI
IPC分类号： H03H11/46 , H03F1/34 , H03F3/19 , H03H11/04 , H03H11/10 , H03H11/12 , H03H11/48 , H03H19/00 , H04B1/04 , H04B1/10
CPC分类号： H03F3/19 , H03H11/10 , H03H11/48 , H03H11/481 , H03H11/485 , H03H19/006 , H03H2011/0488
摘要： Methods and apparatus, including computer program products, are provided for filtering. In some example embodiments, there is provided an apparatus including a first differential amplifier including a first positive input, a first negative input, and a first output, wherein the first positive input is connected to the first output via at least a first capacitor, and wherein the first negative input is connected to the first output via at least a first resistor; and a second differential amplifier including a second input, a third input, and a second output, wherein the second input is connected to the second output via at least a third resistor, wherein the third input is connected to the second output via at least a second capacitor, and wherein an input is connected to the first positive input and the second input via at least a third capacitor. Related apparatus, systems, methods, and articles are also described.
摘要翻译：提供了用于过滤的方法和装置，包括计算机程序产品。在一些示例实施例中，提供了一种装置，该装置包括：第一差分放大器，其包括第一正输入端，第一负输入端和第一输出端，其中第一正输入端经由至少第一电容器连接到第一输出端，以及其中所述第一负输入端经由至少第一电阻器连接到所述第一输出端; 以及第二差分放大器，其包括第二输入端，第三输入端和第二输出端，其中所述第二输入端经由至少第三电阻器连接到所述第二输出端，其中所述第三输入端经由至少一个第二电容器，并且其中输入经由至少第三电容器连接到所述第一正输入端和所述第二输入端。还描述了相关的装置，系统，方法和物品。

7. 发明公开

EP1790075A1 ACTIVE ELECTROMAGNETIC INTERFERENCE FILTER CIRCUIT FOR SUPPRESSING A LINE CONDUCTED INTERFERENCE SIGNAL 审中-公开
标题翻译：有源电磁干扰滤波器电路，为削减一行TIED干扰信号
公开(公告)号：EP1790075A1
公开(公告)日：2007-05-30
申请号：EP05774833.7
申请日：2005-08-18
申请人： Koninklijke Philips Electronics N.V.
发明人： TRAA, Boris, Philips IP & Standards , VAN DALFSEN, Age J., Philips IP & Standards
IPC分类号： H03H1/00 , H03H11/10
CPC分类号： H03H11/10 , H03H7/427 , H03H11/42
摘要： The invention relates to an Electromagnetic Interference (EMI) filter circuit (Fa) for suppressing a Line Conducted Interference (LCI) signal. The EMI filter circuit (Fa) comprises a filter inductance (Lo) to carry a supply current (Isup) between a supply voltage (Vsup) and a load (L). The EMI filter circuit (Fa) further comprises an active circuit (Ca), arranged in parallel with the filter inductance (Lo). The active circuit (Ca) comprises a sensing circuit (Mm) to sense the LCI signal and further comprises a suppressing circuit (Ms) to suppress the LCI signal. In an embodiment of the active EMI filter circuit (Fa), the active circuit (Ca) comprises a negative inductance generating circuit to create a negative inductance value. Selecting the negative inductance generating circuit to create an inductance value (Lca) larger than the inductance value of the filter inductance (Lo) creates a resulting inductance (Lr) which is higher compared to the inductance value of the filter inductance (Lo). In one embodiment, the negative inductance generating circuit comprises a negative impedance converter.

8. 发明公开

EP1354425A2 FILTERANORDNUNG 有权
公开(公告)号：EP1354425A2
公开(公告)日：2003-10-22
申请号：EP02714096.1
申请日：2002-01-21
申请人： Vacuumschmelze GmbH & Co. KG
发明人： HEUMANN, Dirk
IPC分类号： H04B3/00
CPC分类号： H03H11/28 , H03H7/075 , H03H7/1758 , H03H7/38 , H03H7/427 , H03H11/10
摘要： The invention relates to a filter arrangement for connecting complex terminating impedances to a signal source (1), comprising a standard filter configured for a specific real terminating impedance (4), a first adapting impedance (5, 6) connected on the parallel input side to the standard filter (3) and a second adapting impedance connected on the parallel output side to the standard filter (3), whereby the second adapting impedance (5, 6) as well as the negative first adapting impedance (5, 6) are arranged on the entire permeable region in the filter arrangement.
摘要翻译：本发明涉及一种用于将复杂终端阻抗连接到信号源（1）的滤波器装置，该滤波器装置包括被配置用于特定真实终端阻抗（4）的标准滤波器，连接在并行输入侧上的第一适配阻抗（5,6）到标准滤波器（3）以及在并行输出侧连接到标准滤波器（3）的第二适配阻抗，由此第二适配阻抗（5,6）以及负的第一适配阻抗（5,6）是布置在过滤器装置中的整个可渗透区域上。

9. 发明公开

EP0171172A1 Active filters 失效
标题翻译：有源滤波器。
公开(公告)号：EP0171172A1
公开(公告)日：1986-02-12
申请号：EP85304713.2
申请日：1985-07-02
申请人： BRITISH TELECOMMUNICATIONS public limited company
发明人： Greaves, Alan John , Hunter, Phillip James
IPC分类号： H03H11/10 , H03H11/52
CPC分类号： H03H11/10 , H03H11/525
摘要： A fourth (or higher) order filter has a series resonant section terminated by a parallel resonant section, both based on frequency dependent negative resistance (FDNR). The FDNR, resistance and capacitance (representing damping) of the series section are provided by a capacitive potential divider (C41, C42) connected between low impedance input (A) to the filter and an intermediate terminal forming the input of a unity-gain amplifier (A4) whose output is connected via a resistance (R40) to the tapping point of the divider; the intermediate terminal is conncected via a second resistance (R1) to the parallel section.

10. 发明授权

EP3080909B1 HIGHER-ORDER LOAD CIRCUIT 有权转让
公开(公告)号：EP3080909B1
公开(公告)日：2018-10-17
申请号：EP14870190.7
申请日：2014-11-26
申请人： Nokia Technologies Oy
发明人： YLÄMURTO, Tommi
IPC分类号： H03H11/46 , H03H11/12 , H03H19/00 , H03H11/10 , H03H11/04 , H03H11/48 , H03F1/34 , H04B1/04 , H04B1/10 , H03F3/19
CPC分类号： H03F3/19 , H03H11/10 , H03H11/48 , H03H11/481 , H03H11/485 , H03H19/006 , H03H2011/0488
摘要： Methods and apparatus, including computer program products, are provided for filtering. In some example embodiments, there is provided an apparatus including a first differential amplifier including a first positive input, a first negative input, and a first output, wherein the first positive input is connected to the first output via at least a first capacitor, and wherein the first negative input is connected to the first output via at least a first resistor; and a second differential amplifier including a second input, a third input, and a second output, wherein the second input is connected to the second output via at least a third resistor, wherein the third input is connected to the second output via at least a second capacitor, and wherein an input is connected to the first positive input and the second input via at least a third capacitor. Related apparatus, systems, methods, and articles are also described.

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