公开(公告)号：US20140111275A1

公开(公告)日：2014-04-24

申请号：US14056135

申请日：2013-10-17

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Alexander Wayne Hietala

IPC: H03F1/56 ,  H03F3/68 ,  H03F3/20

CPC classification number: H03F1/56 ,  H03F3/20 ,  H03F3/24 ,  H03F3/68 ,  H03F2200/387 ,  H03F2200/537 ,  H03F2200/541

Abstract: An efficient power transfer power amplifier (PA) architecture is disclosed that includes a first PA, a first impedance transformation network (ITN) coupled to the first PA, a second PA, and a second ITN coupled to the second PA. A switching network having a plurality of load outputs along with a first switch input coupled to a first impedance output of the first ITN and a second switch input coupled to a second impedance output of the first ITN, a third switch input coupled to a third impedance output of the second ITN, and a fourth switch input coupled to a fourth impedance output of the second ITN. A control system is adapted to control the switching network to switch signals at the first, second, third, and fourth switch inputs such that select ones of the signals travel paths having matching impedances to loads coupled to the plurality of load outputs.

Abstract translation: 公开了一种有效的功率传输功率放大器（PA）架构，其包括第一PA，耦合到第一PA的第一阻抗变换网络（ITN），第二PA和耦合到第二PA的第二ITN。 一种具有多个负载输出以及耦合到第一ITN的第一阻抗输出的第一开关输入和耦合到第一ITN的第二阻抗输出的第二开关输入的开关网络，耦合到第三阻抗的第三开关输入 第二ITN的输出和耦合到第二ITN的第四阻抗输出的第四开关输入。 控制系统适于控制开关网络以在第一，第二，第三和第四开关输入端切换信号，使得信号中的选择信号将具有匹配阻抗的路径传递到耦合到多个负载输出的负载。

公开(公告)号：US20140057684A1

公开(公告)日：2014-02-27

申请号：US14072120

申请日：2013-11-05

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04W52/02 ,  H03F1/02

CPC classification number: H04W52/0209 ,  H02M3/07 ,  H03F1/02 ,  H03F1/0244 ,  H03F1/025 ,  H03F1/0277 ,  H03F1/42 ,  H03F3/195 ,  H03F3/245 ,  H03F3/3022 ,  H03F3/45475 ,  H03F3/505 ,  H03F3/72 ,  H03F2200/102 ,  H03F2200/204 ,  H03F2200/36 ,  H03F2200/375 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78 ,  H03F2203/45526 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45694 ,  H03F2203/45712 ,  H03F2203/45718 ,  H03F2203/7221 ,  H03G3/3042 ,  Y02D70/00

Abstract: Configuration-feedback circuitry and transceiver circuitry are disclosed. The configuration-feedback circuitry regulates an output power from a radio frequency power amplifier based on a difference between a target output power from the radio frequency power amplifier and a measured output power from the radio frequency power amplifier. The transceiver circuitry regulates a modulated power supply voltage, which is used by the radio frequency power amplifier to provide power for amplification, based on the difference between the target output power from the radio frequency power amplifier and the measured output power from the radio frequency power amplifier.

Abstract translation: 公开了配置反馈电路和收发器电路。 配置反馈电路基于来自射频功率放大器的目标输出功率与来自射频功率放大器的测量输出功率之间的差异来调节来自射频功率放大器的输出功率。 收发器电路基于射频功率放大器的目标输出功率与来自射频功率的测量输出功率之间的差异来调节由射频功率放大器用于提供放大功率的调制电源电压 放大器

公开(公告)号：US20140028368A1

公开(公告)日：2014-01-30

申请号：US13951976

申请日：2013-07-26

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H03H21/00

CPC classification number: H03H21/0021 ,  H03F1/0227 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/432 ,  H03F2200/555 ,  H03H7/0107 ,  H03H7/0153 ,  H03H2007/013

Abstract: A parallel amplifier, a switching supply, and a radio frequency (RF) notch filter are disclosed. The parallel amplifier has a parallel amplifier output, such that the switching supply is coupled to the parallel amplifier output. Further, the RF notch filter is coupled between the parallel amplifier output and a ground. The RF notch filter has a selectable notch frequency, which is based on an RF duplex frequency.

Abstract translation: 公开了一种并行放大器，开关电源和射频（RF）陷波滤波器。 并联放大器具有并联放大器输出，使得开关电源耦合到并行放大器输出。 此外，RF陷波滤波器耦合在并行放大器输出和地之间。 RF陷波滤波器具有可选择的陷波频率，其基于RF双工频率。

公开(公告)号：US20140024329A1

公开(公告)日：2014-01-23

申请号：US13921285

申请日：2013-06-19

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04B1/10

CPC classification number: H04B1/10 ,  H04B1/0057

Abstract: A front end radio architecture is configured to provide a split band frequency arrangement that includes co-banding. The disclosed split band frequency arrangement combines a medium bandwidth filter with a small bandwidth filter to provide enough bandwidth to pass a relatively large communication band. The medium bandwidth filter has a bandwidth that is large enough to support co-banding of smaller communication bands, while also having a narrow enough bandwidth to realize a relatively steep roll-off that ensures coexistence with adjacent bands that are not co-banded. The bandwidths of the medium bandwidth filter and the small bandwidth filter overlap in bandwidth by an amount that is at least as large as the highest bandwidth signal expected to be received or transmitted. The split band frequency arrangement reduces the number of filters needed in the front end radio architecture by repurposing the small bandwidth filter, and by co-banding the smaller communication bands.

Abstract translation: 前端无线电架构被配置为提供包括共带的分离频带频率布置。 所公开的分段频率布置将中带宽滤波器与小带宽滤波器组合以提供足够的带宽以通过相对较大的通信频带。 中带宽滤波器具有足够大的带宽以支持较小通信频带的共带，同时还具有足够窄的带宽以实现相对陡峭的滚降，确保与未共同带状的相邻频带共存。 中带宽滤波器和小带宽滤波器的带宽在带宽中重叠的量至少与预期接收或发送的最高带宽信号一样大。 分频带频率布置通过重新利用小带宽滤波器以及通过共同划分较小的通信频带来减少前端无线电架构中所需的滤波器的数量。

公开(公告)号：US20130337753A1

公开(公告)日：2013-12-19

申请号：US13944972

申请日：2013-07-18

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04B1/44

CPC classification number: H04B1/44 ,  B81B7/02 ,  H01P1/15

Abstract: This disclosure relates to radio frequency (RF) front-end circuitry. In one embodiment, the RF front-end circuitry is arranged to provide antenna switching functionality for a Worldphone or a World tablet. The RF front-end circuitry may include front-end switching circuitry, a multiple throw microelectromechanical switch (MTMEMS), a first antenna port, a second antenna port, and a third antenna port. The front-end switching circuitry of the RF front-end circuitry is configured to selectively couple one or more RF ports to either the first antenna port or the second antenna port. The MTMEMS is configured to selectively couple a pole port coupled to the third antenna port to any one of a set of throw ports, which may be RF ports or may be coupled to RF ports. As such, the RF front-end circuitry is capable of providing antenna switching functionality between three antennas for a Worldphone or World tablet.

Abstract translation: 本公开涉及射频（RF）前端电路。 在一个实施例中，RF前端电路被布置成为世界电话或世界平板电脑提供天线切换功能。 RF前端电路可以包括前端开关电路，多掷微机电开关（MTMEMS），第一天线端口，第二天线端口和第三天线端口。 RF前端电路的前端切换电路被配置为将一个或多个RF端口选择性地耦合到第一天线端口或第二天线端口。 MTMEMS被配置为将耦合到第三天线端口的极端口选择性地耦合到一组投掷端口中的任何一个，其可以是RF端口或者可以耦合到RF端口。 因此，RF前端电路能够为Worldphone或World平板电脑提供三个天线之间的天线切换功能。

公开(公告)号：US20130335160A1

公开(公告)日：2013-12-19

申请号：US13950432

申请日：2013-07-25

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H01P1/15

CPC classification number: H04B1/44 ,  B81B7/02 ,  H01P1/15

Abstract: This disclosure relates to antenna switching circuitry and other radio frequency (RF) front-end circuitry. In one embodiment, the antenna switching circuitry includes a multiple throw solid-state transistor switch (MTSTS) and a multiple throw microelectromechanical switch (MTMEMS). The MTSTS is configured to selectively couple a first pole port to any one of a first set of throw ports and to selectively couple a second pole port to any one of a second set of throw ports. The MTMEMS is configured to selectively couple a third pole port to any one of a third set of throw ports. The third pole port of the MTMEMS is coupled to a first throw port in the first set of throw ports and a second throw port in the second set of throw ports of the MTSTS. Accordingly, the MTSTS is capable of routing multiple RF signals to and from the MTMEMS.

Abstract translation: 本公开涉及天线切换电路和其他射频（RF）前端电路。 在一个实施例中，天线切换电路包括多掷固态晶体管开关（MTSTS）和多掷微机电开关（MTMEMS）。 MTSTS被配置为选择性地将第一极端口耦合到第一组投掷端口中的任一个并且选择性地将第二极端口耦合到第二组投掷端口中的任一个。 MTMEMS被配置为选择性地将第三极端口耦合到第三组投掷端口中的任何一个。 MTMEMS的第三极端口耦合到第一组投掷端口中的第一个投掷端口和MTSTS的第二组投掷端口中的第二个投掷端口。 因此，MTSTS能够将多个RF信号路由到和从MTMEMS路由。

公开(公告)号：US20130141068A1

公开(公告)日：2013-06-06

申请号：US13747725

申请日：2013-01-23

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Nadim Khlat

IPC: G05F1/46

CPC classification number: G05F1/46 ,  H02M1/14 ,  H02M2001/0067 ,  H03F1/0227 ,  H03F1/26 ,  H03F3/24 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/504 ,  H04B15/005

Abstract: This disclosure relates to radio frequency (RF) power converters and methods of operating the same. In one embodiment, an RF power converter includes an RF switching converter, a low-drop out (LDO) regulation circuit, and an RF filter. The RF filter is coupled to receive a pulsed output voltage from the RF switching converter and a supply voltage from the LDO regulation circuit. The RF filter is operable to alternate between a first RF filter topology and a second RF filter topology. In the first RF filter topology, the RF filter is configured to convert the pulsed output voltage from a switching circuit into the supply voltage. The RF filter in the second RF filter topology is configured to filter the supply voltage from the LDO regulation circuit to reduce a ripple variation in a supply voltage level of the supply voltage. As such, the RF filter provides greater versatility.

Abstract translation: 本公开涉及射频（RF）功率转换器及其操作方法。 在一个实施例中，RF功率转换器包括RF开关转换器，低压降（LDO）调节电路和RF滤波器。 RF滤波器被耦合以接收来自RF开关转换器的脉冲输出电压和来自LDO调节电路的电源电压。 RF滤波器可操作以在第一RF滤波器拓扑和第二RF滤波器拓扑之间交替。 在第一RF滤波器拓扑中，RF滤波器被配置为将来自开关电路的脉冲输出电压转换成电源电压。 第二RF滤波器拓扑中的RF滤波器被配置为对来自LDO调节电路的电源电压进行滤波，以减少电源电压的电源电压电平中的纹波变化。 因此，RF滤波器提供更大的通用性。

公开(公告)号：US20130106378A1

公开(公告)日：2013-05-02

申请号：US13661227

申请日：2012-10-26

Applicant: RF MICRO DEVICES, INC.

Inventor： Nadim Khlat

IPC: G05F1/00

CPC classification number: H02M1/15 ,  H02M3/156

Abstract: This disclosure relates generally to radio frequency (RF) switching converters and RF amplification devices that use RF switching converters. In one embodiment, an RF switching converter includes a switching circuit operable to receive a power source voltage, a switching controller configured to switch the switching circuit so that the switching circuit generates a pulsed output voltage from the power source voltage, and an RF filter configured to convert the pulsed output voltage into a supply voltage, wherein the RF filter includes a decoupling capacitor configured to receive the supply voltage. The switching controller is configured to generate a ripple correction current that is injected into the decoupling capacitor such that the decoupling capacitor filters the ripple correction current. The decoupling capacitor outputs the ripple correction current such that the ripple correction current reduces a ripple variation in a supply current level of a supply current resulting from the supply voltage.

Abstract translation: 本公开一般涉及使用RF开关转换器的射频（RF）开关转换器和RF放大器件。 在一个实施例中，RF开关转换器包括可操作以接收电源电压的开关电路，被配置为切换开关电路以使得开关电路从电源电压产生脉冲输出电压的开关控制器，以及配置 将脉冲输出电压转换成电源电压，其中RF滤波器包括被配置为接收电源电压的去耦电容器。 开关控制器被配置为产生纹波校正电流，其被注入到去耦电容器中，使得去耦电容器对纹波校正电流进行滤波。 去耦电容器输出纹波校正电流，使得纹波校正电流减小由电源电压产生的电源电流的电源电流电平中的纹波变化。

公开(公告)号：US10298288B2

公开(公告)日：2019-05-21

申请号：US13952880

申请日：2013-07-29

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04B1/44 ,  H01P1/15 ,  B81B7/02

Abstract: This disclosure relates to antenna switching circuitry and other radio frequency (RF) front-end circuitry. In one embodiment, the antenna switching circuitry includes a multiple throw solid-state transistor switch (MTSTS), a multiple throw microelectromechanical switch (MTMEMS), and a control circuit. The MTSTS is configured to selectively couple a first pole port to any one of a first set of throw ports and to selectively couple a second pole port to any one of a second set of throw ports. The MTMEMS is configured to selectively couple a third pole port to any one of a third set of throw ports. The control circuit is configured to control the selective coupling of the MTSTS and the MTMEMS. In this manner, the control circuit may operate the antenna switching circuitry so that RF signals may be routed in accordance with Long Term Evolution (LTE) Multiple-Input and Multiple-Output (MIMO) and/or LTE diversity specifications.

公开(公告)号：US09935670B2

公开(公告)日：2018-04-03

申请号：US14497919

申请日：2014-09-26

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat

IPC: H04B1/44 ,  H04B1/40 ,  H04L5/14 ,  H04B1/00 ,  H04B15/00 ,  H04L5/08 ,  H04B7/0413

CPC classification number: H04B1/40 ,  H04B1/0057 ,  H04B7/0413 ,  H04B15/00 ,  H04L5/08 ,  H04L5/14

Abstract: RF front-end circuitry, which includes RF switching and duplexing circuitry, a first RF diplexer, and a second RF diplexer, is disclosed. The RF switching and duplexing circuitry operates in one of a group of RF transmit modes, such that the group of RF transmit modes includes at least one transmit uplink carrier aggregation mode. The RF switching and duplexing circuitry provides at least one RF transmit signal based on the one of the group of RF transmit modes. The first RF diplexer is coupled between the RF switching and duplexing circuitry and a primary RF antenna. The second RF diplexer is coupled between the RF switching and duplexing circuitry and an auxiliary RF antenna.