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公开(公告)号：US09083518B2
公开(公告)日：2015-07-14
申请号：US13760240
申请日：2013-02-06
Applicant: RF Micro Devices, Inc.
Inventor： Ruediger Bauder , Marcus Granger-Jones , Nadim Khlat
CPC classification number: H04L5/14 , H03H7/48 , H04B1/44 , H04B1/525 , H04L25/03878
Abstract: This disclosure includes embodiments of a tunable hybrid coupler. The tunable hybrid coupler includes a first inductive element having a first inductance, a second inductive element having a second inductance and mutually coupled to the first inductive element, a first variable capacitive element having a first variable capacitance, and a second variable capacitance having a second variable capacitance. The first variable capacitive element is coupled between a first port and a second port. The second variable capacitive element is coupled between a third port and a fourth port. The first inductive element is coupled from the first port to the third port, while the second inductive element is coupled from the second port to the fourth port. Accordingly, the tunable hybrid coupler may form an impedance matching network that is tunable to different radio frequency (RF) communication bands. The tunable hybrid coupler can be used in a tunable RF duplexer.
Abstract translation: 本公开包括可调混合耦合器的实施例。 可调混合耦合器包括具有第一电感的第一电感元件，具有第二电感并且相互耦合到第一电感元件的第二电感元件，具有第一可变电容的第一可变电容元件和具有第二可变电容的第二可变电容 可变电容。 第一可变电容元件耦合在第一端口和第二端口之间。 第二可变电容元件耦合在第三端口和第四端口之间。 第一电感元件从第一端口耦合到第三端口，而第二电感元件从第二端口耦合到第四端口。 因此，可调混合耦合器可以形成可调谐到不同射频（RF）通信频带的阻抗匹配网络。 可调混合耦合器可用于可调谐RF双工器。
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公开(公告)号：US20150117281A1
公开(公告)日：2015-04-30
申请号：US14547502
申请日：2014-11-19
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Marcus Granger-Jones
IPC: H04L5/08
CPC classification number: H03H7/463 , H03H7/48 , H04B1/0057 , H04B1/40 , H04B1/50 , H04B10/556 , H04L5/08 , H04L27/2085
Abstract: Embodiments of a tunable radio frequency (RF) diplexer and methods of operating the same are disclosed. In one embodiment, the RF diplexer includes a first hybrid coupler, a second hybrid coupler, an RF filter circuit, and a phase inversion component. Both the RF filter circuit and the phase inversion component are connected between the first hybrid coupler and the second hybrid coupler. The phase inversion component is configured to provide approximately a differential phase. The RF filter circuit is configured to provide a passband and a notch. The RF filter circuit is tunable to provide the notch on both a high-frequency side of the passband and a low frequency side of the passband. Accordingly, the tunable RF diplexer provides lower insertion losses and higher isolation regardless of whether the one of the diplexed frequency bands is set at higher frequencies or lower frequencies than the other diplexed frequency band.
Abstract translation: 公开了可调谐射频（RF）双工器的实施例及其操作方法。 在一个实施例中，RF双工器包括第一混合耦合器，第二混合耦合器，RF滤波器电路和相位反转分量。 RF滤波器电路和相位反转分量都连接在第一混合耦合器和第二混合耦合器之间。 相位反转分量被配置为提供大致差分相位。 RF滤波器电路被配置为提供通带和陷波。 RF滤波器电路是可调谐的，以在通带的高频侧和通带的低频侧提供陷波。 因此，可调谐RF双工器提供较低的插入损耗和更高的隔离度，而不管双工频带中的一个是否设置在比另一个双工频带更高的频率或更低的频率。
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公开(公告)号：US20140328220A1
公开(公告)日：2014-11-06
申请号：US14267095
申请日：2014-05-01
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Marcus Granger-Jones
CPC classification number: H04B1/0064 , H04L5/001 , H04L5/0041
Abstract: Front end circuitry for a wireless communication system includes a first antenna node, a second antenna node, a first triplexer, a second triplexer, and front end switching circuitry coupled between the first triplexer, the second triplexer, the first antenna node, and the second antenna node. The front end switching circuitry is configured to selectively couple the first triplexer to one of the first antenna node and the second antenna node and couple the second triplexer to a different one of the first antenna node and the second antenna node. By using a first triplexer and a second triplexer in the mobile front end circuitry, the mobile front end circuitry may operate in one or more carrier aggregation configurations while reducing the maximum load presented to the first antenna node and the second antenna node, thereby improving the performance of the front end circuitry.
Abstract translation: 用于无线通信系统的前端电路包括耦合在第一三工器，第二三工器，第一天线节点和第二天线节点之间的第一天线节点，第二天线节点，第一三工器，第二三工器和前端开关电路 天线节点。 前端开关电路被配置为选择性地将第一三工器耦合到第一天线节点和第二天线节点之一，并将第二三工器耦合到第一天线节点和第二天线节点中的不同的天线节点。 通过在移动前端电路中使用第一三工器和第二三工器，移动前端电路可以在一个或多个载波聚合配置中操作，同时减少呈现给第一天线节点和第二天线节点的最大负载，从而改善 前端电路的性能。
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公开(公告)号：US20140169243A1
公开(公告)日：2014-06-19
申请号：US14133024
申请日：2013-12-18
Applicant: RF MICRO DEVICES, INC.
Inventor： Nadim Khlat , Marcus Granger-Jones
IPC: H04L5/08
CPC classification number: H04B7/0602 , H04B7/0802 , H04L5/001
Abstract: Communication circuitry is disclosed that is capable of switching between three or more antennas while providing low harmonic interference during carrier aggregation. In one embodiment, a communication system includes a first switch with two poles and four throws, a second switch with two poles and four throws, and four diplexers associated with four antennas. In a second embodiment, the communication system includes a first switch with three poles and three throws, a second switch with three poles and three throws, and three diplexers associated with three antennas. In the second embodiment, the second switch may have a third pole associated with non-cellular signals such as GPS and WiFi, and one or more of the diplexers may be tunable, for example to efficiently pass 1.575 GHz for GPS signals.
Abstract translation: 公开了能够在载波聚合期间提供低谐波干扰的三个或更多个天线之间切换的通信电路。 在一个实施例中，通信系统包括具有两极和四掷的第一开关，具有两极和四掷的第二开关以及与四个天线相关联的四个双工器。 在第二实施例中，通信系统包括具有三极和三掷的第一开关，具有三极和三掷的第二开关，以及与三个天线相关联的三个双工器。 在第二实施例中，第二开关可以具有与诸如GPS和WiFi之类的非蜂窝信号相关联的第三极，并且一个或多个双工器可以是可调谐的，例如可有效地通过1.575GHz的GPS信号。
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公开(公告)号：US08749296B2
公开(公告)日：2014-06-10
申请号：US13892992
申请日：2013-05-13
Applicant: RF Micro Devices, Inc.
Inventor： Marcus Granger-Jones
IPC: H03K17/687
CPC classification number: H03K17/04 , H03K17/04123 , H03K17/102 , H03K2217/0018
Abstract: The described FET switch topology greatly reduces the off state loading experienced by the gate biasing resistors in a stacked FET structure. The FET switch topology evenly distributes the voltage across the FET switch topology which reduces the voltage across the gate biasing resistors when the stacked FET structure is in an off state. Because the off state loading is reduced, there is a corresponding reduction of the current through bias resistors, which permits a reduction in the size of the bias resistors. This permits a substantial reduction in the area attributed to the bias resistors in an integrated solution.
Abstract translation: 所描述的FET开关拓扑大大减少了堆叠FET结构中的栅极偏置电阻所经历的关断状态负载。 FET开关拓扑结构在FET开关拓扑结构中均匀分布电压，当堆叠FET结构处于关闭状态时，降低栅极偏置电阻两端的电压。 由于关闭状态负载减小，所以通过偏置电阻器的电流相应地减小，这允许减小偏置电阻器的尺寸。 这允许在集成解决方案中归因于偏置电阻器的面积的显着减少。
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Patent Agency Ranking
公开(公告)号：US20130250819A1
公开(公告)日：2013-09-26
申请号：US13848393
申请日：2013-03-21
Applicant: RF MICRO DEVICES, INC.
Inventor： Nadim Khlat , Marcus Granger-Jones , Ruediger Bauder
IPC: H04B1/10
CPC classification number: H04B1/10 , H03H7/465 , H03H2007/013 , H03H2210/025 , H03H2210/033 , H03H2210/036 , H04L27/0002
Abstract: Radio frequency (RF) front end circuitry includes a notch diplexer. The notch diplexer includes a high pass filter coupled between a high band port and an antenna port, and a low pass notch filter coupled between a low band port and the antenna port. The high pass filter is adapted to receive a high band receive signal having a high band carrier frequency at the antenna port, and pass the high band receive signal to the high band port. The low pass notch filter is adapted to receive a low band transmit signal having a low band carrier frequency at the low band port, and attenuate distortion in the low band transmit signal about a notch stop band before passing the low band transmit signal to the antenna port. According to one embodiment, the notch stop band includes the high band carrier frequency.
Abstract translation: 射频（RF）前端电路包括一个切口双工器。 陷波分波器包括耦合在高频带端口和天线端口之间的高通滤波器以及耦合在低频带端口和天线端口之间的低通陷波滤波器。 高通滤波器适于在天线端口处接收具有高频带载波频率的高频带接收信号，并将高频带接收信号传送到高频带端口。 低通陷波滤波器适于在低频带端口接收具有低频带载波频率的低频带发射信号，并且在通过低频带发射信号到天线之前衰减低频带发射信号关于陷波阻挡带的失真 港口。 根据一个实施例，陷波阻挡带包括高频带载波频率。
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公开(公告)号：US20130201880A1
公开(公告)日：2013-08-08
申请号：US13760159
申请日：2013-02-06
Applicant: RF MICRO DEVICES, INC.
Inventor： Ruediger Bauder , Marcus Granger-Jones , Nadim Khlat
IPC: H04L5/14
CPC classification number: H04L5/14 , H03H7/48 , H04B1/44 , H04B1/525 , H04L25/03878
Abstract: A tunable radio frequency (RF) duplexer is disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split an RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The first hybrid coupler is also operable to split an RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The RF filter circuit is operable to pass the first and second RF QHRSs to the second hybrid coupler and to reflect the first and second RF QHTSs back to the first hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHRSs into an RF receive output signal, while the first hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal.
Abstract translation: 公开了一种可调谐射频（RF）双工器。 可调RF双工器包括第一混合耦合器，第二混合耦合器和RF滤波器电路。 第一混合耦合器可操作以将RF接收输入信号分成第一和第二RF正交混合接收信号（QHRS）。 第一混合耦合器还可操作以将RF传输输入信号分成第一和第二RF正交混合传输信号（QHTS）。 RF滤波器电路可操作以将第一和第二RF QHRS传递到第二混合耦合器并将第一和第二RF QHTS反射回第一混合耦合器。 此外，第二混合耦合器被配置为将第一和第二RF QHRS组合成RF接收输出信号，而第一混合耦合器被配置为将第一和第二RF QHTS组合成RF发射输出信号。
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公开(公告)号：US09899986B2
公开(公告)日：2018-02-20
申请号：US14547502
申请日：2014-11-19
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Marcus Granger-Jones
CPC classification number: H03H7/463 , H03H7/48 , H04B1/0057 , H04B1/40 , H04B1/50 , H04B10/556 , H04L5/08 , H04L27/2085
Abstract: Embodiments of a tunable radio frequency (RF) diplexer and methods of operating the same are disclosed. In one embodiment, the RF diplexer includes a first hybrid coupler, a second hybrid coupler, an RF filter circuit, and a phase inversion component. Both the RF filter circuit and the phase inversion component are connected between the first hybrid coupler and the second hybrid coupler. The phase inversion component is configured to provide approximately a differential phase. The RF filter circuit is configured to provide a passband and a notch. The RF filter circuit is tunable to provide the notch on both a high-frequency side of the passband and a low frequency side of the passband. Accordingly, the tunable RF diplexer provides lower insertion losses and higher isolation regardless of whether the one of the diplexed frequency bands is set at higher frequencies or lower frequencies than the other diplexed frequency band.
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19.发明授权公开(公告)号：US09837984B2
公开(公告)日：2017-12-05
申请号：US15004084
申请日：2016-01-22
Applicant: RF Micro Devices, Inc.
Inventor： Nadim Khlat , Andrew F. Folkmann , Robert Aigner , Marcus Granger-Jones
CPC classification number: H03H9/542 , H03H9/605 , H03H9/6483 , H03H9/6489
Abstract: An RF ladder filter having a parallel capacitance compensation circuit is disclosed. The parallel capacitance compensation circuit is made up of a first inductive element with a first T-terminal and a first end coupled to a first ladder terminal and a second inductive element with a second T-terminal that is coupled to the first T-terminal of the first inductive element and a second end coupled to a second ladder terminal. Further included is a compensating acoustic RF resonator (ARFR) having a fixed node terminal and a third T-terminal that is coupled to the first T-terminal of the first inductive element and the second T-terminal of the second inductive element, and a finite number of series-coupled ladder ARFRs, wherein the parallel capacitance compensation circuit is coupled across one of the finite number of series-coupled ARFRs by way of the first ladder terminal and the second ladder terminal.
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公开(公告)号：US09799444B2
公开(公告)日：2017-10-24
申请号：US14840216
申请日：2015-08-31
Applicant: RF Micro Devices, Inc.
Inventor： Marcus Granger-Jones , John Robert Siomkos , Jeppe Korshøj Bendixen , John Avery Capwell , Jayanti Jaganatha Rao
CPC classification number: H01F38/14 , H01F21/12 , H01F2038/146 , H03H7/465 , H03H7/48
Abstract: This disclosure relates generally to directional couplers. In one embodiment, a directional coupler includes a first port, a second port, a third port, a first inductive element, a second inductive element, a first switchable path, and a second switchable path. The first inductive element is coupled between the first port and the second port, while the second inductive element is mutually coupled to the first inductive element. The first switchable path is configured to be opened and closed, wherein the first switchable path is coupled between a first location of the second inductive element and the third port. The second switchable path is configured to be opened and closed, wherein the second switchable path is coupled between a second location of the second inductive element and the third port. In this manner, a directivity of the directional coupler can be switched between a forward direction and a reverse direction.
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