公开(公告)号：US20190190495A1

公开(公告)日：2019-06-20

申请号：US16323216

申请日：2017-08-04

申请人： SNAPTRACK, INC.

发明人： Edgar SCHMIDHAMMER

IPC分类号： H03H9/64 ,  H03H9/54 ,  H03H7/46 ,  H03H7/12

CPC分类号： H03H9/6483 ,  H03H7/12 ,  H03H7/463 ,  H03H9/542 ,  H03H9/568 ,  H03H9/605 ,  H03H9/6406 ,  H03H9/6409 ,  H03H2210/012 ,  H03H2210/015 ,  H03H2210/025

摘要： A reconfigurable microacoustic filter is specified which comprises a ladder-type-like filter topology and a suitably placed adjustable capacitive element.

公开(公告)号：US20190109575A1

公开(公告)日：2019-04-11

申请号：US15730643

申请日：2017-10-11

申请人： Avago Technologies General IP (Singapore) Pte. Ltd.

发明人： Milad DARVISHI ,  Hooman DARABI ,  Arya Reza BEHZAD

IPC分类号： H03H7/01 ,  H03H2/00 ,  H03H7/12 ,  H04J1/04

CPC分类号： H03H7/01 ,  H03H2/008 ,  H03H7/12 ,  H03H19/002 ,  H03H2001/0014 ,  H03H2007/013 ,  H03H2210/025 ,  H04J1/045

摘要： A linear, low noise, high quality factor (Q) and widely tunable notch filter circuit includes one or more first reactive elements coupled between a first filter node and a first node. The notch filter circuit further includes a multi-branch circuit having multiple parallel branches and coupled between the first node and a second node. Each branch of the multi-branch circuit includes at least a switch coupled to a variable capacitor. A notch frequency of the notch filter circuit is tunable by adjusting a capacitance of the variable capacitor.

公开(公告)号：US10056662B2

公开(公告)日：2018-08-21

申请号：US15275159

申请日：2016-09-23

申请人： The United States of America, as represented by the Secretary of the Navy

发明人： Andrew C. Guyette ,  Eric J. Naglich ,  Sanghoon Shin

IPC分类号： H01P1/20 ,  H01F38/14 ,  H01P1/10 ,  H01P1/12 ,  H03H7/12 ,  H01P1/203 ,  H03H7/01

CPC分类号： H01P1/20 ,  H01F38/14 ,  H01P1/10 ,  H01P1/127 ,  H01P1/2039 ,  H03H7/12 ,  H03H2007/013

摘要： Systems and methods are provided for implementing a switched microwave bandstop filter with minimum insertion loss and phase distortion in the bypass state. For example, embodiments of the present disclosure provide systems and methods for implementing self-switching bandstop filters that do not require signal-routing RF switches, allowing for very low passband insertion loss and improved power handling.

公开(公告)号：US20160352310A1

公开(公告)日：2016-12-01

申请号：US15232372

申请日：2016-08-09

申请人： Murata Manufacturing Co., Ltd.

发明人： Masakazu Tani ,  Shouzo Sugiyama

IPC分类号： H03H9/54 ,  H04B1/525 ,  H03H9/64

CPC分类号： H03H9/542 ,  H03H7/0153 ,  H03H7/12 ,  H03H9/568 ,  H03H9/605 ,  H03H9/64 ,  H03H9/6403 ,  H03H9/6483 ,  H03H2210/025 ,  H04B1/525

摘要： A filter circuit includes a serial arm connected between ports (P1-P2), a parallel arm having a resonator connected in series between ports (P1-P3), and another parallel arm having another resonator connected in series between ports (P2-P3). The serial arm includes a switching circuit, and the switching circuit connects an inductor or a capacitor to the serial arm in series using a switch.

摘要翻译： 滤波器电路包括连接在端口（P1-P2）之间的串联臂，具有在端口（P1-P3）之间串联连接的谐振器的并联臂，以及具有在端口（P2-P3）之间串联连接的另一谐振器的另一个并联臂， 。 串联臂包括开关电路，开关电路使用开关将电感器或电容器串联连接到串联臂。

公开(公告)号：US20160294367A1

公开(公告)日：2016-10-06

申请号：US15085669

申请日：2016-03-30

申请人： TDK Corporation

发明人： Jim Bao ,  Rien Gahlsdorf

IPC分类号： H03H19/00 ,  G05F3/20 ,  H01L49/02

CPC分类号： H03H19/004 ,  G05F3/205 ,  H01L28/40 ,  H01L29/66181 ,  H01L29/94 ,  H03H7/0153 ,  H03H7/12 ,  H03H7/40 ,  H03H7/463 ,  H03H2250/00

摘要： A capacitor structure is described. The capacitor structure includes a substrate; a plurality of source/drain regions formed in said substrate to form an active area, the active area having an active area width; and a first and a second plurality of gates formed above the substrate. Each gate of the first and second plurality of gates having a gate width. The gate width is configured to be less than the active area width and each gate of the first and second plurality of gates is formed between a pair of source/drain regions of the plurality of source/drain regions such that the first plurality of gates interleave with the second plurality of gates.

摘要翻译： 描述电容器结构。 电容器结构包括基板; 形成在所述衬底中以形成有源区的多个源极/漏极区，所述有源区具有有效面积宽度; 以及形成在所述衬底上方的第一和第二多个栅极。 第一和第二多个栅极的每个栅极具有栅极宽度。 栅极宽度被配置为小于有源区宽度，并且第一和第二多个栅极的每个栅极形成在多个源极/漏极区域的一对源极/漏极区域之间，使得第一多个栅极交错 与第二多个门。

公开(公告)号：US09294064B2

公开(公告)日：2016-03-22

申请号：US13835211

申请日：2013-03-15

申请人： QUALCOMM Incorporated

发明人： Young Kyu Song ,  Kyu-Pyung Hwang ,  Changhan Hobie Yun ,  Dong Wook Kim

IPC分类号： H03H7/01 ,  H03H7/12 ,  H05K1/16 ,  H01G4/40 ,  H03H3/00

CPC分类号： H03H7/0115 ,  H01G4/40 ,  H03H3/00 ,  H03H7/12 ,  H05K1/162 ,  H05K2201/09236 ,  Y10T29/43 ,  Y10T29/49016

摘要： A planar capacitor includes, in part, a first metal line forming spiral-shaped loops around one of its end point, and a second metal line forming spiral-shaped loops between the loops of the first metal line. The first and second metal lines are coplanar, formed on an insulating layer, and form the first and second plates of the planar capacitor. The planar capacitor may be used to form a filter. Such a filter includes a first metal line forming first spiral-shaped loops, a second metal line forming second spiral-shaped loops, and a third metal line—coplanar with the first and second metal lines—forming loops between the loops of the first and second metal lines. The filter further includes a first inductor coupled between the first and third metal lines, and a second inductor coupled between the second and third metal lines.

摘要翻译： 平面电容器部分地包括围绕其端点之一形成螺旋形环的第一金属线和在第一金属线的环之间形成螺旋形环的第二金属线。 第一和第二金属线是共面的，形成在绝缘层上，并形成平面电容器的第一和第二板。 平面电容器可以用于形成滤波器。 这种过滤器包括形成第一螺旋形环的第一金属线，形成第二螺旋状环的第二金属线和与第一和第二金属线形成环之间的第一和第二金属线形成环的第三金属线 - 共面， 第二条金属线 滤波器还包括耦合在第一和第三金属线之间的第一电感器和耦合在第二和第三金属线之间的第二电感器。

公开(公告)号：US09136815B2

公开(公告)日：2015-09-15

申请号：US13852512

申请日：2013-03-28

申请人： Nokia Corporation

发明人： Sudhir Aggarwal ,  Xiao Xiao

IPC分类号： H03H7/12 ,  H03H19/00

CPC分类号： H03H7/12 ,  H03H19/002

摘要： A variable bandwidth filter includes a first filter branch in parallel with a second filter branch. The first filter branch includes a first resistance in series with an input and a first output, and N parallel paths across the first output. The second filter branch includes a second resistance in series with the input and a second output, and N parallel paths across the second output. A clock tunes the first and second filter branches to a center frequency. A combiner produces a difference signal including a difference between the output of the first filter branch and the output of the second filter branch to provide a filter output having an adjustable bandwidth with reference to a center frequency. The bandwidth is adjusted by changing a value of at least one resistor or at least one capacitor in one or more of the first filter branch or the second filter branch.

摘要翻译： 可变带宽过滤器包括与第二过滤器分支并行的第一过滤器分支。 第一滤波器分支包括与输入和第一输出串联的第一电阻以及穿过第一输出的N个并行路径。 第二滤波器分支包括与输入和第二输出串联的第二电阻，以及穿过第二输出的N个并行路径。 时钟将第一和第二滤波器分支调谐到中心频率。 组合器产生包括第一滤波器分支的输出与第二滤波器分支的输出之间的差异的差分信号，以提供具有参考中心频率的可调节带宽的滤波器输出。 通过在第一滤波器分支或第二滤波器分支中的一个或多个中改变至少一个电阻器或至少一个电容器的值来调整带宽。

公开(公告)号：US09112476B2

公开(公告)日：2015-08-18

申请号：US13405673

申请日：2012-02-27

申请人： Umut Basaran ,  Josef Schmal ,  Stefan Herzinger ,  Herbert Stockinger ,  Volker Thomas

发明人： Umut Basaran ,  Josef Schmal ,  Stefan Herzinger ,  Herbert Stockinger ,  Volker Thomas

IPC分类号： H04B1/38 ,  H03H7/12 ,  H03H11/12 ,  H04B1/525 ,  H03H7/01

CPC分类号： H03H7/0153 ,  H03H7/06 ,  H03H7/12 ,  H03H11/1217 ,  H03H2007/013 ,  H04B1/525

摘要： The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal.

摘要翻译： 所公开的本发明涉及一种收发器系统，包括陷波滤波器元件，其被配置为抑制接收路径内的发射机阻挡器（即，发射机干扰信号）。 在一些实施例中，收发机前端包括具有第一差分支路和第二差分支路的差分接收路径，其被配置为向跨阻抗放大器提供具有发射机阻断器的RF差分输入信号，包括一阶有源滤波器 和陷波滤波器元件。 陷波滤波器元件包括对应于发送信号的频率的阻带，使得陷波滤波器元件抑制所发送的阻断器而不降低接收的差分输入信号的信号质量。

公开(公告)号：US20150131492A1

公开(公告)日：2015-05-14

申请号：US14446270

申请日：2014-07-29

申请人： Wispry, Inc.

发明人： Arthur S. Morris, III ,  Jorgen Bojer ,  Peter Dam Madsen

IPC分类号： H04L5/14

CPC分类号： H03H7/0138 ,  H03H7/0115 ,  H03H7/0153 ,  H03H7/12 ,  H03H7/175 ,  H03H7/1758 ,  H03H7/1766 ,  H03H7/463 ,  H03H2210/00 ,  H03H2210/01 ,  H04L5/1461

摘要： The present subject matter relates to systems, devices, and methods for adaptively tuning antenna elements and/or associated filter elements to support multiple frequency bands. For example, a tunable filter having an input node and an output node can be selectively tunable to define one or more pass bands associated with one or more first signal bands and one or more reject bands associated with one or more second signal bands. The tunable filter can be configured to pass signals having frequencies within the first signal bands between the input node and the output node and to block signals having frequencies within the second signal bands. Furthermore, the tunable filter can be configured to selectively tune the pass bands to have a minimum pass band insertion loss at any of a variety of frequencies, including frequencies that are greater than and less than frequencies within the reject bands.

摘要翻译： 本主题涉及用于自适应地调谐天线元件和/或相关联的滤波器元件以支持多个频带的系统，装置和方法。 例如，具有输入节点和输出节点的可调谐滤波器可以选择性地可调谐以定义与一个或多个第一信号频带以及与一个或多个第二信号频带相关联的一个或多个拒绝频带相关联的一个或多个通带。 可调谐滤波器可以被配置为传递具有在输入节点和输出节点之间的第一信号频带内的频率的信号，并且阻止具有在第二信号频带内的频率的信号。 此外，可调谐滤波器可以被配置为选择性地调谐通带以在各种频率中的任何一个（包括大于和小于拒绝频带内的频率的频率）中具有最小的通带插入损耗。

公开(公告)号：US20150102872A1

公开(公告)日：2015-04-16

申请号：US14575861

申请日：2014-12-18

申请人： Resonant, Inc.

发明人： Genichi Tsuzuki ,  Balam A. Willemsen

IPC分类号： H03H9/46 ,  H03H9/54 ,  H03H9/64

CPC分类号： H03H9/465 ,  G06F17/5036 ,  G06F17/5045 ,  G06F17/5063 ,  G06F17/5072 ,  G06F17/5077 ,  G06F2217/02 ,  G06F2217/08 ,  G06F2217/16 ,  G06F2217/82 ,  H01P1/20 ,  H01P1/20336 ,  H03H3/00 ,  H03H7/0153 ,  H03H7/0161 ,  H03H7/06 ,  H03H7/075 ,  H03H7/12 ,  H03H7/1758 ,  H03H7/1791 ,  H03H7/54 ,  H03H9/171 ,  H03H9/46 ,  H03H9/462 ,  H03H9/542 ,  H03H9/64 ,  H03H9/6406 ,  H03H2007/013 ,  H03H2009/02204 ,  H03H2210/012 ,  H03H2210/025 ,  H03H2210/033 ,  Y10T29/49018

摘要： An RF filter comprises a signal transmission path having an input and an output, a plurality of resonant elements disposed along the signal transmission path between the input and the output, and a plurality of non-resonant elements coupling the resonant elements together to form a stop band having a plurality of transmission zeroes corresponding to respective frequencies of the resonant elements, and at least one sub-band between the transmission zeroes. The non-resonant elements comprise at least one variable non-resonant element for selectively introducing at least one reflection zero within the stop band to create a pass band in a selected one of the sub-band(s). The RF filter further comprises an electrical controller configured for receiving an operating temperature, and adjusting the variable non-resonant element(s) based on the received operating temperature, thereby selectively moving the reflection zero(es) along the stop band to move the pass band within the selected sub-band.

摘要翻译： RF滤波器包括具有输入和输出的信号传输路径，沿着输入和输出之间的信号传输路径设置的多个谐振元件，以及将谐振元件耦合在一起的多个非谐振元件，以形成停止 频带具有对应于谐振元件的相应频率的多个传输零点，以及传输零点之间的至少一个子带。 非谐振元件包括至少一个可变非谐振元件，用于选择性地在阻带内引入至少一个反射零点，以在所选择的一个子带中产生通带。 RF滤波器还包括被配置为接收工作温度并基于接收到的工作温度调整可变非谐振元件的电控制器，由此选择性地沿着阻带移动反射零点以移动通过 在所选子带内。