公开(公告)号：US20140225674A1

公开(公告)日：2014-08-14

申请号：US14176611

申请日：2014-02-10

Applicant: RF Micro Devices, Inc.

Inventor： Andrew F. Folkmann ,  Nadim Khlat ,  Michael R. Kay

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F1/0222 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/451

Abstract: Circuitry, which includes a linear amplifier, is disclosed. The linear amplifier has a linear amplifier output and includes an input amplifier stage and an output amplifier stage. The output amplifier stage at least partially provides an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a group of linear amplifier power supply signals. The group of linear amplifier power supply signals includes at least a first bi-directional power supply signal. The input amplifier stage selects the one of the group of linear amplifier power supply signals based on the envelope power supply voltage and a setpoint of the envelope power supply voltage.

Abstract translation: 公开了包括线性放大器的电路。 线性放大器具有线性放大器输出，并包括输入放大级和输出放大级。 输出放大器级至少部分地通过使用一组线性放大器电源信号中选定的一个的包络电源输出向射频（RF）功率放大器（PA）提供包络电源电压。 线性放大器电源信号组至少包括第一双向电源信号。 输入放大器级基于包络电源电压和包络电源电压的设定点来选择一组线性放大器电源信号。

公开(公告)号：US20140220911A1

公开(公告)日：2014-08-07

申请号：US14171994

申请日：2014-02-04

Applicant: RF Micro Devices, Inc.

Inventor： Jeppe Korshøj Bendixen ,  Daniel Charles Kerr ,  Christian Rye Iversen

IPC: H01Q1/50 ,  H04B1/44

CPC classification number: H04B1/44 ,  H01Q1/242

Abstract: Antenna tuning switch circuitry includes an input port, a shunt switch, control circuitry, and an integrated ground. The shunt switch is coupled between the input port and the integrated ground. The control circuitry includes a control signal input port, a switch driver output port coupled to the shunt switch, and a ground connection port coupled to the integrated ground. The shunt switches, the RF input ports, the control circuitry, and the integrated ground are monolithically integrated on a single semiconductor die. The antenna tuning switch circuitry is adapted to selectively couple the input port to the integrated ground in order to alter one or more operating parameters of an attached antenna. By monolithically integrating the shunt switch together with the control circuitry and the integrated ground, the ON state impedance and the parasitic OFF state impedance of the antenna tuning switch circuitry can be significantly improved.

Abstract translation: 天线调谐开关电路包括输入端口，分流开关，控制电路和集成接地。 分流开关耦合在输入端口和集成接地之间。 控制电路包括控制信号输入端口，耦合到并联开关的开关驱动器输出端口以及耦合到集成接地的接地连接端口。 分流开关，RF输入端口，控制电路和集成接地单个集成在单个半导体管芯上。 天线调谐开关电路适于选择性地将输入端口耦合到集成地，以便改变连接的天线的一个或多个操作参数。 通过将分流开关与控制电路和集成接地单片集成，可以显着地改善天线调谐开关电路的导通状态阻抗和寄生OFF状态阻抗。

公开(公告)号：US20140210314A1

公开(公告)日：2014-07-31

申请号：US14031383

申请日：2013-09-19

Applicant: RF Micro Devices, Inc.

Inventor： Kushal Bhattacharjee ,  Sergei Zhgoon

IPC: H03H9/17

CPC classification number: H03H9/17 ,  H03H2009/155

Abstract: A micro-electrical-mechanical system (MEMS) vibrating structure includes a carrier substrate, a first anchor, a second anchor, a single crystal piezoelectric body, and a conducting layer. The first anchor and the second anchor are provided on the surface of the carrier substrate. The single-crystal piezoelectric body is suspended between the first anchor and the second anchor, and includes a uniform crystalline orientation defined by a set of Euler angles. The single-crystal piezoelectric body includes a first surface parallel to and facing the surface of the carrier substrate on which the first anchor and the second anchor are formed and a second surface opposite the first surface. The conducting layer is inter-digitally dispersed, and is formed on the second surface of the single-crystal piezoelectric body. The first surface of the single-crystal piezoelectric body is left exposed.

Abstract translation: 微机电系统（MEMS）振动结构包括载体基板，第一锚固件，第二锚固件，单晶体压电体和导电层。 第一锚固件和第二锚固件设置在载体基板的表面上。 单晶压电体悬挂在第一锚和第二锚之间，并且包括由一组欧拉角定义的均匀结晶取向。 单晶体压电体包括平行于并面向其上形成有第一锚和第二锚的载体基板的表面的第一表面和与第一表面相对的第二表面。 导电层是数字间分散的，并且形成在单晶体压电体的第二表面上。 单晶体压电体的第一面露出。

公开(公告)号：US20140203869A1

公开(公告)日：2014-07-24

申请号：US14163256

申请日：2014-01-24

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay ,  Manbir Singh Nag

IPC: H03F3/189

CPC classification number: H03F1/0227 ,  H02M2001/0045 ,  H03F1/0266 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/375 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2200/555

Abstract: A parallel amplifier and an offset capacitance voltage control loop are disclosed. The parallel amplifier has a parallel amplifier output, which is coupled to an envelope tracking power supply output via an offset capacitive element. The offset capacitive element has an offset capacitive voltage. The offset capacitance voltage control loop regulates the offset capacitive voltage, which is adjustable on a communications slot-to-communications slot basis.

Abstract translation: 公开了并联放大器和偏移电容电压控制回路。 并联放大器具有并联放大器输出，其通过偏移电容元件耦合到包络跟踪电源输出。 偏移电容元件具有偏移电容电压。 偏移电容电压控制回路调节偏移电容电压，其可以在通信插槽到通信插槽的基础上进行调整。

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。

公开(公告)号：US08750812B2

公开(公告)日：2014-06-10

申请号：US13961088

申请日：2013-08-07

Applicant: RF Micro Devices, Inc.

Inventor： Erik Pedersen ,  Søren Deleuran Laursen ,  Jean-Christophe Berchtold

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H03G3/004 ,  H03F1/0238 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45179 ,  H03F2200/447 ,  H03F2200/504 ,  H03F2200/555

Abstract: A power amplification device is disclosed that includes a power amplification circuit operable to amplify a radio frequency (RF) signal in accordance with an amplification gain, and a voltage regulation circuit operable to generate a regulated voltage. A regulated voltage level of the regulated voltage sets the amplification gain. To help prevent the voltage regulation circuit from saturating, the voltage regulation circuit is configured to reduce a voltage adjustment gain when the regulated voltage level reaches a threshold voltage level. In one embodiment, the threshold voltage level is set to be higher when a band-select signal indicates that the RF signal is being transmitted within a first frequency band, and is set to be lower when the band-select signal indicates that the RF signal is being transmitted within a second frequency band. The spectral performance of the power amplification device thus improves with regard to the second frequency band.

Abstract translation: 公开了一种功率放大装置，其包括功率放大电路，其可操作以根据放大增益放大射频（RF）信号，以及电压调节电路，其可操作以产生调节电压。 调节电压的稳定电压设置放大增益。 为了防止电压调节电路饱和，调压电路被配置为当调节电压电平达到阈值电压电平时降低电压调节增益。 在一个实施例中，当频带选择信号指示RF信号在第一频带内传输时，将阈值电压电平设置得较高，并且当频带选择信号指示RF信号 在第二频带内传输。 因此功率放大装置的光谱性能相对于第二频带而改善。

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。

公开(公告)号：US20140152285A1

公开(公告)日：2014-06-05

申请号：US14096603

申请日：2013-12-04

Applicant: RF Micro Devices, Inc.

Inventor： Ashraf Rozek

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M2001/0009 ,  H02M2001/0032 ,  Y02B70/16

Abstract: An average load current detector for a multi-mode switching converter is disclosed. The average load current detector includes a sense voltage generator that generates an average sense voltage that is proportional to an average load current delivered by the multi-mode switching converter. Also included is a duty voltage generator that generates an average duty voltage that is proportional to a duty cycle of a pulse width modulation (PWM) signal that controls switching of the multi-mode switching converter. Further included is a comparator adapted to output a detector signal that indicates an operational mode for the multi-mode switching converter to operate in for predetermined load current ranges. A controller receives the detector signal and in response maintains an efficient energy transfer from one supply voltage level to another by transitioning the multi-mode switching converter from the PWM mode to a pulse frequency modulation (PFM) mode or vice versa if necessary.

Abstract translation: 公开了一种用于多模切换转换器的平均负载电流检测器。 平均负载电流检测器包括感测电压发生器，其产生与由多模式开关转换器传送的平均负载电流成比例的平均感测电压。 还包括一个占空比电压发生器，其产生与控制多模开关转换器的开关的脉冲宽度调制（PWM）信号的占空比成比例的平均占空比电压。 还包括一个比较器，其适于输出检测器信号，该检测器信号指示多模转换器在预定的负载电流范围内工作的操作模式。 控制器接收检测器信号，并且作为响应，通过将多模式开关转换器从PWM模式转换到脉冲频率调制（PFM）模式，或者如果需要，反之亦然地保持从一个电源电压电平到另一个电源电压的有效能量传递。

公开(公告)号：US20140144682A1

公开(公告)日：2014-05-29

申请号：US13891888

申请日：2013-05-10

Applicant: RF MICRO DEVICES, INC.

Inventor： John August Orlowski ,  Donald Joseph Leahy

IPC: H05K1/09 ,  H05K3/00

CPC classification number: H05K3/00 ,  H01L23/15 ,  H01L23/49811 ,  H01L23/49827 ,  H01L24/13 ,  H01L24/16 ,  H01L24/81 ,  H01L2224/13023 ,  H01L2224/131 ,  H01L2224/13111 ,  H01L2224/16237 ,  H01L2224/81191 ,  H01L2224/81444 ,  H01L2224/81815 ,  H01L2924/181 ,  H05K3/244 ,  H05K3/3436 ,  H05K2201/0376 ,  H05K2201/099 ,  H05K2201/10674 ,  H05K2203/073 ,  H01L2924/00012 ,  H01L2924/00014 ,  H01L2924/014 ,  H01L2924/01047

Abstract: An electronic substrate includes one or more conductive features. In order to preserve the performance and conductivity of the one or more conductive features, the exposed portions of the conductive features are deposited with a protective layer comprising a layer of silver, followed by a layer of gold. By covering the exposed portions of the conductive features of the electronic substrate with the protective layer, oxidation and exposure of the conductive features is prevented, thereby preserving the performance and conductivity of the copper features. Further, during a soldering process, the protective layer is substantially dissolved, thereby allowing the solder to join directly with the underlying conductive features and improving the performance of the electronic substrate.

Abstract translation: 电子基板包括一个或多个导电特征。 为了保持一个或多个导电特征的性能和导电性，导电特征的暴露部分被沉积有包含一层银的保护层，随后是一层金。 通过用保护层覆盖电子基板的导电特征的暴露部分，防止导电特征的氧化和曝光，从而保持铜特征的性能和导电性。 此外，在焊接工艺期间，保护层基本上溶解，从而允许焊料直接与下面的导电特征相结合并且改善了电子衬底的性能。

公开(公告)号：US20140141738A1

公开(公告)日：2014-05-22

申请号：US13860101

申请日：2013-04-10

Applicant: RF MICRO DEVICES, INC.

Inventor： Stephen T. Janesch

IPC: H04B1/10

CPC classification number: H04B1/10 ,  H03F3/45183 ,  H04B1/18

Abstract: Radio frequency (RF) self-tuning amplification devices and methods of amplification for an RF input signal are disclosed. In one embodiment, the RF self-tuning amplification device has a first RF amplifier, a reference RF amplifier, and a tuning circuit. The first RF amplifier includes a first RF amplification circuit to generate an amplified RF output signal from the RF input signal, and a tunable parallel resonator tunable so as to shift an RF output signal phase of the amplified RF output signal. The reference RF amplifier includes a second RF amplification circuit that generates a reference RF signal from the RF input signal, and a resistive load, so that the reference RF signal has a reference RF signal phase. The tuning circuit is configured to tune the tunable parallel resonator to reduce a phase difference between the RF output signal phase and the reference RF signal phase.

Abstract translation: 公开了射频（RF）自整定放大装置和用于RF输入信号的放大方法。 在一个实施例中，RF自调谐放大装置具有第一RF放大器，参考RF放大器和调谐电路。 第一RF放大器包括用于从RF输入信号产生放大的RF输出信号的第一RF放大电路，以及可调谐并联谐振器，以便移位放大的RF输出信号的RF输出信号相位。 参考RF放大器包括从RF输入信号和阻性负载产生参考RF信号的第二RF放大电路，使得参考RF信号具有参考RF信号相位。 调谐电路被配置为调谐可调谐并联谐振器以减小RF输出信号相位和参考RF信号相位之间的相位差。