公开(公告)号：US09698751B2

公开(公告)日：2017-07-04

申请号：US14931165

申请日：2015-11-03

Applicant: RF Micro Devices, Inc.

Inventor： Dirk Robert Walter Leipold ,  George Maxim ,  Marcus Granger-Jones ,  Nadim Khlat ,  Baker Scott

IPC: H03H7/46 ,  H01F17/00

CPC classification number: H03H7/463 ,  H01F17/0006

Abstract: RF multiplexer circuitry includes a first signal path coupled between a first intermediate node and a common node, a second signal path coupled between a second intermediate node and the common node, first resonator circuitry coupled between the first signal path and ground, and second resonator circuitry coupled between the second signal path and ground. The first resonator circuitry is configured to allow signals within a first frequency pass band to pass between the first intermediate node and the common node, while attenuating signals outside of the first frequency pass band. The first resonator circuitry includes a first LC resonator. The second resonator circuitry is configured to allow signals within a second frequency pass band to pass between the second intermediate node and the common node, while attenuating signals outside of the second frequency pass band.

公开(公告)号：US09685928B2

公开(公告)日：2017-06-20

申请号：US14450200

申请日：2014-08-01

Applicant: RF Micro Devices, Inc.

Inventor： George Maxim ,  Dirk Robert Walter Leipold ,  Baker Scott

IPC: H03H7/12 ,  H03H7/01 ,  H03F1/56 ,  H03F3/193 ,  H03F3/24 ,  H03F3/68 ,  H03F3/72 ,  H03H7/09

CPC classification number: H03H7/0115 ,  H03F1/565 ,  H03F3/193 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/267 ,  H03F2200/391 ,  H03F2200/451 ,  H03F2203/7209 ,  H03H7/0161 ,  H03H7/0169 ,  H03H7/09 ,  H03H7/12 ,  H03H7/1775 ,  H03H2210/012 ,  H03H2210/025 ,  H03H2210/04

Abstract: RF communications circuitry includes an RF filter structure, which includes a group of resonators, a group of cross-coupling capacitive structures, and a group of egress/ingress capacitive structures, is disclosed. Each of the group of cross-coupling capacitive structures is coupled between two of the group of resonators. A first portion of the group of egress/ingress capacitive structures is coupled between a first connection node and the group of resonators. A second portion of the group of egress/ingress capacitive structures is coupled between a second connection node and the group of resonators.

公开(公告)号：US09584085B2

公开(公告)日：2017-02-28

申请号：US14554542

申请日：2014-11-26

Applicant: RF Micro Devices, Inc.

Inventor： Baker Scott ,  George Maxim ,  Dirk Robert Walter Leipold

IPC: H03G3/30 ,  H03F3/68 ,  H03F3/19 ,  H03F1/32 ,  H03F1/52 ,  H03F1/02 ,  H04B1/04 ,  H03F1/22 ,  H03F1/56 ,  H03F3/45 ,  H03F3/193

CPC classification number: H03G3/3036 ,  H03F1/0211 ,  H03F1/0272 ,  H03F1/223 ,  H03F1/32 ,  H03F1/523 ,  H03F1/565 ,  H03F3/19 ,  H03F3/193 ,  H03F3/24 ,  H03F3/45179 ,  H03F3/45394 ,  H03F3/68 ,  H03F2200/324 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2201/3236 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/0416 ,  H04B2001/0425

Abstract: An amplifying system with increased linearity is disclosed. The amplifying system includes a first gain stage with a first gain characteristic, a second gain stage with a second gain characteristic, and bias circuitry configured to substantially maintain alignment of distortion inflection points between the first gain characteristic and the second gain characteristic during operation. The bias circuitry is configured to further maintain alignment of the distortion inflection points between the first gain characteristic and the second gain characteristic over design corners by providing substantially constant headroom between quiescent bias voltage and turnoff of the first gain stage and the second gain stage. In some embodiments the first gain characteristic is expansive and the second gain characteristic is compressive. In other embodiments the first gain characteristic is compressive and the second gain characteristic is expansive. In some embodiments the first gain stage is configured to provide RF degeneration control of gain.

Abstract translation: 公开了具有增加的线性度的放大系统。 放大系统包括具有第一增益特性的第一增益级，具有第二增益特性的第二增益级，以及被配置为在操作期间基本保持第一增益特性与第二增益特性之间的失真拐点对准的偏置电路。 偏置电路被配置为通过在静态偏置电压和第一增益级与第二增益级的截止之间提供基本恒定的余量，进一步保持在设计角上的第一增益特性和第二增益特性之间的失真拐点的对准。 在一些实施例中，第一增益特性是膨胀的，第二增益特性是压缩的。 在其他实施例中，第一增益特性是压缩的，第二增益特性是膨胀的。 在一些实施例中，第一增益级被配置为提供增益的RF退化控制。

公开(公告)号：US20170033760A1

公开(公告)日：2017-02-02

申请号：US15141283

申请日：2016-04-28

Applicant: RF Micro Devices, Inc.

Inventor： Drik Robert Walter Leipold ,  George Maxim ,  Marcus Granger-Jones ,  Baker Scott

IPC: H03H7/46 ,  H03H7/01

CPC classification number: H03H7/1775 ,  H03H7/0115 ,  H03H7/0161 ,  H03H7/09 ,  H03H2007/013

Abstract: Embodiments of radio frequency (RF) filtering circuitry are disclosed. In one embodiment, the RF filtering circuitry includes a first port, a second port, a first RF filter path, and a second RF filter path. The first RF filter path is connected between the first port and the second port and includes at least a pair of weakly coupled resonators. The weakly coupled resonators are configured such that a first transfer response between the first port and the second port defines a first passband. The second RF filter path is coupled to the first RF filter path and is configured such that the first transfer response between the first port and the second port defines a stopband adjacent to the first passband without substantially increasing ripple variation of the first passband defined by the first transfer response.

Abstract translation: 公开了射频（RF）滤波电路的实施例。 在一个实施例中，RF滤波电路包括第一端口，第二端口，第一RF滤波器路径和第二RF滤波器路径。 第一RF滤波器路径连接在第一端口和第二端口之间，并且包括至少一对弱耦合谐振器。 弱耦合谐振器被配置为使得第一端口和第二端口之间的第一传输响应限定第一通带。 第二RF滤波器路径被耦合到第一RF滤波器路径并且被配置为使得第一端口和第二端口之间的第一传输响应限定与第一通带相邻的阻带，而基本上不增加由第一通带限定的第一通带的纹波变化 第一传递响应。

公开(公告)号：US20160127063A1

公开(公告)日：2016-05-05

申请号：US14927565

申请日：2015-10-30

Applicant: RF Micro Devices, Inc.

Inventor： Dirk Robert Walter Leipold ,  George Maxim ,  Marcus Granger-Jones ,  Baker Scott

IPC: H04J1/08 ,  H04B1/40

CPC classification number: H01F27/2804 ,  H01F2027/2809 ,  H03H7/38 ,  H03H7/463 ,  H04B1/40 ,  H04J1/08

Abstract: Multiplexing circuitry is disclosed that includes filtering circuitry, which provides a first transfer function between a common port and a first port and a second transfer function between the common port and a second port. The first transfer function and second transfer function provide a first passband and a second passband, respectively. The first transfer function also has a stopband provided within the second passband of the second transfer function because the filtering circuitry includes a first filter path and a second filter path, wherein the second filter path has a first and second parallel resonant circuit provided in shunt with respect to the second filter path and weakly coupled to one another. The weak coupling between the first parallel resonant circuit and the second parallel resonant circuit naturally provides the stopband in the first transfer function within the second passband of the second transfer function.

Abstract translation: 公开了包括滤波电路的多路复用电路，该滤波电路在公共端口和第一端口之间提供第一传输功能，以及在公共端口和第二端口之间提供第二传输功能。 第一传递函数和第二传递函数分别提供第一通带和第二通带。 第一传递函数还具有设置在第二传递函数的第二通带内的阻带，因为滤波电路包括第一滤波器路径和第二滤波器路径，其中第二滤波器路径具有第一和第二并联谐振电路， 相对于第二过滤器路径并且彼此弱耦合。 第一并联谐振电路和第二并联谐振电路之间的弱耦合自然地在第二传递函数的第二通带内的第一传递函数中提供阻带。

公开(公告)号：US20160126990A1

公开(公告)日：2016-05-05

申请号：US14931102

申请日：2015-11-03

Applicant: RF Micro Devices, Inc.

Inventor： Dirk Robert Walter Leipold ,  George Maxim ,  Baker Scott

IPC: H04B1/10 ,  H04B7/08 ,  H04W72/04

CPC classification number: H03F3/193 ,  H03F1/0261 ,  H03F1/223 ,  H03F1/26 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/492 ,  H04B1/1036 ,  H04B7/08 ,  H04B2001/1063 ,  H04W72/04

Abstract: A carrier aggregation front-end module with a receive sub-module for receiving signals from a plurality of transmit modules. The module comprises a first receive path configured to receive a first set of signals from one or more of a plurality of antennas, wherein the first set of signals comprises at least one desired receive signal and at least one undesired transmit blocker signal from the plurality of transmit modules. The second receive path is configured to receive a second set of signals from one or more of a plurality of antennas comprising at least one desired receive signal and at least one undesired transmit blocker signal from the plurality of transmit modules. The module also comprises at least one shared tunable notch filter configured to reject at least one of the undesired transmit blocker signals for each of the first receive path and the second receive path.

Abstract translation: 一种具有用于从多个发送模块接收信号的接收子模块的载波聚合前端模块。 所述模块包括被配置为从多个天线中的一个或多个天线接收第一组信号的第一接收路径，其中所述第一组信号包括至少一个期望的接收信号和来自所述多个天线的至少一个不希望的发射阻断信号 传输模块。 第二接收路径被配置为从多个天线中的一个或多个天线接收包括至少一个所需接收信号的第二组信号和来自多个发射模块的至少一个不期望的发射阻断信号。 该模块还包括至少一个共享可调陷波滤波器，其被配置为拒绝第一接收路径和第二接收路径中的每一个的不期望的传输阻塞信号中的至少一个。

公开(公告)号：US20160126609A1

公开(公告)日：2016-05-05

申请号：US14931541

申请日：2015-11-03

Applicant: RF Micro Devices, Inc.

Inventor： Dirk Robert Walter Leipold ,  George Maxim ,  Marcus Granger-Jones ,  Baker Scott

IPC: H01P9/00

CPC classification number: H01P1/20381 ,  H01P3/085 ,  H01P5/028 ,  H01P9/006

Abstract: The present disclosure relates to coupled slow-wave transmission lines. In this regard, a transmission line structure is provided. The transmission line structure includes a first undulating signal path formed from first loop structures. The transmission line structure also includes a second undulating signal path formed from second loop structures. The second undulating signal path is disposed alongside of the first undulating signal path. Further, a first ground structure is disposed above or below either one or both of the first undulating signal path and the second undulating signal path.

Abstract translation: 本公开涉及耦合的慢波传输线。 在这方面，提供传输线结构。 传输线结构包括由第一环结构形成的第一起伏信号路径。 传输线结构还包括由第二环结构形成的第二起伏信号路径。 第二起伏信号路径被布置在第一起伏信号路径的旁边。 此外，第一接地结构设置在第一起伏信号路径和第二起伏信号路径中的任一个或两个之上或之下。

公开(公告)号：US20150155843A1

公开(公告)日：2015-06-04

申请号：US14554542

申请日：2014-11-26

Applicant: RF Micro Devices, Inc.

Inventor： Baker Scott ,  George Maxim ,  Dirk Robert Walter Leipold

IPC: H03G3/30 ,  H03F3/68 ,  H03F3/19 ,  H03F1/32

CPC classification number: H03G3/3036 ,  H03F1/0211 ,  H03F1/0272 ,  H03F1/223 ,  H03F1/32 ,  H03F1/523 ,  H03F1/565 ,  H03F3/19 ,  H03F3/193 ,  H03F3/24 ,  H03F3/45179 ,  H03F3/45394 ,  H03F3/68 ,  H03F2200/324 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2201/3236 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/0416 ,  H04B2001/0425

Abstract: An amplifying system with increased linearity is disclosed. The amplifying system includes a first gain stage with a first gain characteristic, a second gain stage with a second gain characteristic, and bias circuitry configured to substantially maintain alignment of distortion inflection points between the first gain characteristic and the second gain characteristic during operation. The bias circuitry is configured to further maintain alignment of the distortion inflection points between the first gain characteristic and the second gain characteristic over design corners by providing substantially constant headroom between quiescent bias voltage and turnoff of the first gain stage and the second gain stage. In some embodiments the first gain characteristic is expansive and the second gain characteristic is compressive. In other embodiments the first gain characteristic is compressive and the second gain characteristic is expansive. In some embodiments the first gain stage is configured to provide RF degeneration control of gain.

Abstract translation: 公开了具有增加的线性度的放大系统。 放大系统包括具有第一增益特性的第一增益级，具有第二增益特性的第二增益级，以及被配置为在操作期间基本保持第一增益特性与第二增益特性之间的失真拐点对准的偏置电路。 偏置电路被配置为通过在静态偏置电压和第一增益级与第二增益级的截止之间提供基本恒定的余量，进一步保持在设计角上的第一增益特性和第二增益特性之间的失真拐点的对准。 在一些实施例中，第一增益特性是膨胀的，第二增益特性是压缩的。 在其他实施例中，第一增益特性是压缩的，第二增益特性是膨胀的。 在一些实施例中，第一增益级被配置为提供增益的RF退化控制。

公开(公告)号：US20150084718A1

公开(公告)日：2015-03-26

申请号：US14554943

申请日：2014-11-26

Applicant: RF Micro Devices, Inc.

Inventor： George Maxim ,  Dirk Robert Walter Leipold ,  Baker Scott

IPC: H03H7/01

CPC classification number: H03H7/0161 ,  H01F17/0013 ,  H03F1/565 ,  H03F3/245 ,  H03F2200/546 ,  H03H7/0115 ,  H03H7/1708 ,  H03H7/1716 ,  H03H7/1766 ,  H03H7/1775 ,  H03H7/40 ,  H03H2007/386

Abstract: Radio frequency (RF) filter structures and related methods and RF front-end circuitry are disclosed. In one embodiment, an RF filter structure includes a first terminal and a first tunable RF filter path defined between the first terminal and a second terminal. The first tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a first frequency. The first frequency may be provided within a first frequency band. Additionally, the RF filter structure includes a second tunable RF filter path defined between the first terminal and the second terminal. The second tunable RF filter path is tunable to provide impedance matching between the first terminal and the second terminal at a second frequency. The second frequency may be within a second frequency band. In this manner, the RF filter structure is configured to provide impedance tuning for multiple impedance bands simultaneously.

Abstract translation: 公开了射频（RF）滤波器结构和相关方法以及RF前端电路。 在一个实施例中，RF滤波器结构包括第一端子和限定在第一端子和第二端子之间的第一可调谐RF滤波器路径。 第一可调谐RF滤波器路径是可调谐的，以在第一频率处提供第一端子和第二端子之间的阻抗匹配。 第一频率可以设置在第一频带内。 另外，RF滤波器结构包括限定在第一端子和第二端子之间的第二可调谐RF滤波器路径。 第二可调谐RF滤波器路径是可调谐的，以在第二频率下提供第一端子和第二端子之间的阻抗匹配。 第二频率可以在第二频带内。 以这种方式，RF滤波器结构被配置为同时为多个阻抗带提供阻抗调谐。

公开(公告)号：US20150084699A1

公开(公告)日：2015-03-26

申请号：US14554975

申请日：2014-11-26

Applicant: RF Micro Devices, Inc.

Inventor： George Maxim ,  Dirk Robert Walter Leipold ,  Baker Scott

IPC: H03H7/46

CPC classification number: H03H7/0161 ,  H01F17/0013 ,  H03F3/195 ,  H03F3/245 ,  H03F3/68 ,  H03F2200/168 ,  H03F2200/546 ,  H03H7/0115 ,  H03H7/0153 ,  H03H7/09 ,  H03H7/463

Abstract: Radio frequency (RF) front-end circuitry that includes control circuitry and an RF filter structure that includes a plurality of resonators are disclosed. In one embodiment, a first tunable RF filter path is defined by a first set of the plurality of resonators such that the first tunable RF filter path has a first amplitude and a first phase. A second tunable RF filter path is defined by a second set of the plurality of resonators such that the second tunable RF filter path has a second amplitude and a second phase. To provide antenna diversity and/or beam forming/beam steering, the control circuitry is configured to set a first amplitude difference between the first amplitude and the second amplitude to approximately a first target amplitude difference and set a first phase difference between the first phase and the second phase to approximately a first target phase difference.

Abstract translation: 公开了包括控制电路和包括多个谐振器的RF滤波器结构的射频（RF）前端电路。 在一个实施例中，第一可调谐RF滤波器路径由多个谐振器的第一组限定，使得第一可调谐RF滤波器路径具有第一幅度和第一相位。 第二可调谐RF滤波器路径由多个谐振器的第二组限定，使得第二可调谐RF滤波器路径具有第二幅度和第二相位。 为了提供天线分集和/或波束形成/波束导向，控制电路被配置为将第一幅度和第二幅度之间的第一幅度差设置为大约第一目标幅度差，并且设置第一相位和第一相位差之间的第一相位差 第二阶段到大约第一目标相位差。