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    Radio frequency (RF) front-end without signal switches
    32.
    发明授权
    Radio frequency (RF) front-end without signal switches 有权

    公开(公告)号：US09787353B2

    公开(公告)日：2017-10-10

    申请号：US15099686

    申请日：2016-04-15

    Applicant: RF Micro Devices, Inc.

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

    IPC: H04B1/48

    CPC classification number: H04B1/48

    Abstract: Disclosed is an RF front-end with improved insertion loss having at least a first resonator with a first port and a second port and at least a second resonator having a third port and a fourth port, wherein the first resonator and the second resonator are magnetically coupled by no more than 5%. Also included is at least one coupling structure coupled between the second port of the first resonator and the third port of the second resonator, wherein the coupling structure has a coupling control input for varying a coupling coefficient between the first resonator and the second resonator such that an RF signal transfer between the first port of the first resonator and the fourth port of the second resonator is controllably variable between 5% and 95%.

    Multi-band impedance tuners using weakly-coupled LC resonators
    34.
    发明授权
    Multi-band impedance tuners using weakly-coupled LC resonators 有权

    公开(公告)号：US09716481B2

    公开(公告)日：2017-07-25

    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 ,  H03H7/40 ,  H01F17/00 ,  H03F1/56 ,  H03F3/24 ,  H03H7/38

    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.

    RADIO FREQUENCY (RF) FRONT-END WITHOUT SIGNAL SWITCHES
    36.
    发明申请
    RADIO FREQUENCY (RF) FRONT-END WITHOUT SIGNAL SWITCHES 有权
    无信号频率（RF）前端无信号开关

    公开(公告)号：US20170019143A1

    公开(公告)日：2017-01-19

    申请号：US15099686

    申请日：2016-04-15

    Applicant: RF Micro Devices, Inc.

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

    IPC: H04B1/48

    CPC classification number: H04B1/48

    Abstract: Disclosed is an RF front-end with improved insertion loss having at least a first resonator with a first port and a second port and at least a second resonator having a third port and a fourth port, wherein the first resonator and the second resonator are magnetically coupled by no more than 5%. Also included is at least one coupling structure coupled between the second port of the first resonator and the third port of the second resonator, wherein the coupling structure has a coupling control input for varying a coupling coefficient between the first resonator and the second resonator such that an RF signal transfer between the first port of the first resonator and the fourth port of the second resonator is controllably variable between 5% and 95%.

    Abstract translation: 公开了具有改进的插入损耗的RF前端，其具有至少第一谐振器，其具有第一端口和第二端口，以及至少第二谐振器具有第三端口和第四端口，其中第一谐振器和第二谐振器是磁性的 加上不超过5％。 还包括耦合在第一谐振器的第二端口和第二谐振器的第三端口之间的至少一个耦合结构，其中耦合结构具有用于改变第一谐振器和第二谐振器之间的耦合系数的耦合控制输入，使得 在第一谐振器的第一端口和第二谐振器的第四端口之间的RF信号传输可控地在5％和95％之间变化。

    RECONFIGURABLE DIRECTIONAL COUPLER WITH A VARIABLE COUPLING FACTOR
    38.
    发明申请
    RECONFIGURABLE DIRECTIONAL COUPLER WITH A VARIABLE COUPLING FACTOR 有权
    具有可变耦合因子的可重构方向耦合器

    公开(公告)号：US20160268994A1

    公开(公告)日：2016-09-15

    申请号：US14815252

    申请日：2015-07-31

    Applicant: RF Micro Devices, Inc.

    Inventor： Marcus Granger-Jones ,  Baker Scott ,  Ali Tombak

    IPC: H03H7/46 ,  H01F38/14

    CPC classification number: H03H7/468 ,  H01F21/12 ,  H01F38/14 ,  H01F2021/125 ,  H01F2038/146 ,  H01P5/185 ,  H03H7/48

    Abstract: The present disclosure relates to a reconfigurable directional coupler with a variable coupling factor that can be changed in value as a function of a desired transmit band of operation. The reconfigurable directional coupler includes a primary inductive segment, secondary inductive segments, and switch circuitry configured to change the total coupling capacitance formed between the primary and secondary inductive segments by selectively switching the secondary inductive segments into the secondary signal path. Simultaneously, the mutual inductance and coupling factor between the primary and the secondary inductive segments are reconfigured.

    Abstract translation: 本公开涉及具有可变耦合因子的可重新配置的定向耦合器，其可以根据期望的发射操作频带而变化。 可重构定向耦合器包括初级感应段，次级感应段和开关电路，其经配置以通过选择性地将次级感应段切换到辅助信号路径来改变形成在初级和次级感应段之间的总耦合电容。 同时，初级和次级感应段之间的互感和耦合因子被重新配置。

    SLOW-WAVE TRANSMISSION LINE FORMED IN A MULTI-LAYER SUBSTRATE
    39.
    发明申请
    SLOW-WAVE TRANSMISSION LINE FORMED IN A MULTI-LAYER SUBSTRATE 有权
    在多层基板上形成的慢波传输线

    公开(公告)号：US20160126608A1

    公开(公告)日：2016-05-05

    申请号：US14921218

    申请日：2015-10-23

    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 ,  H05K1/00 ,  H05K1/0219 ,  H05K1/0239 ,  H05K1/0298 ,  H05K3/4611 ,  H05K2201/097

    Abstract: The present disclosure relates to a slow-wave transmission line for transmitting slow-wave signals with reduced loss. In this regard, the slow-wave transmission line is formed in a multi-layer substrate and includes an undulating signal path. The undulating signal path includes at least two loop structures, wherein each loop structure includes at least two via structures connected by at least one intra-loop trace. The undulating signal path further includes at least one inter-loop trace connecting the at least two loop structures. Additionally, the slow-wave transmission line includes a first ground structure disposed along the undulating signal path. In this manner, a loop inductance is formed by each of the at least two loop structures, while a first distributed capacitance is formed between the undulating signal path and the ground structure.

    Abstract translation: 本发明涉及用于以较低损耗传输慢波信号的慢波传输线。 在这方面，慢波传输线形成在多层基板中，并且包括起伏的信号路径。 起伏信号路径包括至少两个环路结构，其中每个环路结构包括通过至少一个环路内线路连接的至少两个通孔结构。 起伏信号路径还包括连接至少两个环路结构的至少一个环路间迹线。 此外，慢波传输线包括沿着起伏信号路径设置的第一接地结构。 以这种方式，由至少两个环形结构中的每一个形成环路电感，同时在起伏信号路径和地面结构之间形成第一分布电容。

    Transformer-based power amplifier stabilization and reference distortion reduction
    40.
    发明授权
    Transformer-based power amplifier stabilization and reference distortion reduction 有权
    基于变压器的功放稳定和参考失真减少

    公开(公告)号：US09300260B2

    公开(公告)日：2016-03-29

    申请号：US14215774

    申请日：2014-03-17

    Applicant: RF Micro Devices, Inc.

    Inventor： George Maxim ,  Baker Scott ,  Ming Tsai ,  Alireza Shirvani

    IPC: H03F1/32 ,  H03F3/193 ,  H03F1/14 ,  H03F1/34 ,  H03F1/56 ,  H03F3/195 ,  H01L23/66 ,  H01L23/498 ,  H01L23/00

    CPC classification number: H03F3/193 ,  H01L23/49822 ,  H01L23/49827 ,  H01L23/66 ,  H01L24/16 ,  H01L2223/6644 ,  H01L2224/16225 ,  H03F1/14 ,  H03F1/347 ,  H03F1/565 ,  H03F3/195 ,  H03F2200/451

    Abstract: This disclosure relates generally to radio frequency (RF) amplification devices and methods of operating the same. In one embodiment, an RF amplification device includes an RF amplification circuit and a stabilizing transformer network. The RF amplification circuit defines an RF signal path and is configured to amplify an RF signal propagating in the RF signal path. The stabilizing transformer network is operably associated with the RF signal path defined by the RF amplification circuit. Furthermore, the stabilizing transformer network is configured to reduce parasitic coupling along the RF signal path of the RF amplification circuit as the RF signal propagates in the RF signal path. In this manner, the stabilizing transformer network allows for inexpensive components to be used to reduce parasitic coupling while allowing for smaller distances along the RF signal path.

    Abstract translation: 本公开一般涉及射频（RF）放大装置及其操作方法。 在一个实施例中，RF放大装置包括RF放大电路和稳定变压器网络。 RF放大电路定义RF信号路径并且被配置为放大在RF信号路径中传播的RF信号。 稳定变压器网络与由RF放大电路限定的RF信号路径可操作地相关联。 此外，稳定变压器网络被配置为当RF信号在RF信号路径中传播时减小沿着RF放大电路的RF信号路径的寄生耦合。 以这种方式，稳定变压器网络允许使用便宜的部件来减少寄生耦合，同时允许沿着RF信号路径的较小的距离。

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