公开(公告)号：WO2014031825A1

公开(公告)日：2014-02-27

申请号：PCT/US2013/056132

申请日：2013-08-22

Applicant: RF MICRO DEVICES, INC

Inventor： RITENOUR, Andrew P.

IPC: H01L29/423 ,  H01L29/778 ,  H01L29/20

CPC classification number: H01L29/2003 ,  H01L29/42316 ,  H01L29/42368 ,  H01L29/4238 ,  H01L29/778

Abstract: A gallium nitride (GaN) device with leakage current-based over-voltage protection is disclosed. The GaN device includes a drain and a source disposed on a semiconductor substrate. The GaN device also includes a first channel region within the semiconductor substrate and between the drain and the source. The GaN device further includes a second channel region within the semiconductor substrate and between the drain and the source. The second channel region has an enhanced drain induced barrier lowering (DIBL) that is greater than the DIBL of the first channel region. As a result, a drain voltage will be safely clamped below a destructive breakdown voltage once a substantial drain current begins to flow through the second channel region.

Abstract translation: 公开了一种具有基于漏电流的过电压保护的氮化镓（GaN）器件。 GaN器件包括设置在半导体衬底上的漏极和源极。 GaN器件还包括半导体衬底内的第一沟道区域和漏极与源极之间。 GaN器件还包括半导体衬底内的第二沟道区域和漏极与源极之间。 第二通道区域具有大于第一通道区域的DIBL的增强的漏极引发屏障降低（DIBL）。 结果，一旦大量漏极电流开始流过第二沟道区域，漏极电压将被安全地夹在破坏性击穿电压之下。

公开(公告)号：WO2013063364A1

公开(公告)日：2013-05-02

申请号：PCT/US2012/062070

申请日：2012-10-26

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  NGO, Christopher, Truong,

IPC: H02M3/156 ,  H03F1/02 ,  H02M1/00

CPC classification number: H03F1/0227 ,  H02M3/156 ,  H03F3/19 ,  H03F2200/108 ,  H03F2200/351

Abstract: This disclosure relates generally to radio frequency (RF) switching converters and RF amplification devices that use RF switching converters. For example, an RF switching converter may include a switching circuit that receives a power source voltage and a switching controller that receives a target average frequency value identifying a target average frequency. The switching circuit is switchable so as to generate a pulsed output voltage from the power source voltage. The switching controller switches the switching circuit such that the pulsed output voltage has an average pulse frequency. The switching controller also detects that the average pulse frequency of the pulsed output voltage during a time period differs from the target average frequency, and reduces a difference between the average pulse frequency and the target average frequency. In this manner, the effects of manufacturing variations and operational variations on the average pulse frequency can be eliminated, or at least diminished.

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。 例如，RF开关转换器可以包括接收电源电压的开关电路和接收识别目标平均频率的目标平均频率值的开关控制器。 开关电路是可切换的，以便从电源电压产生脉冲输出电压。 开关控制器切换开关电路，使得脉冲输出电压具有平均脉冲频率。 切换控制器还检测在一段时间内脉冲输出电压的平均脉冲频率与目标平均频率不同，并且减小了平均脉冲频率和目标平均频率之间的差。 以这种方式，可以消除或至少减少制造变化和操作变化对平均脉冲频率的影响。

公开(公告)号：WO2013012787A3

公开(公告)日：2013-03-14

申请号：PCT/US2012046887

申请日：2012-07-16

Applicant: RF MICRO DEVICES INC

Inventor： KHLAT NADIM ,  KAY MICHAEL R

IPC: H03F1/32 ,  H03F1/02 ,  H03F3/24 ,  H03G3/00 ,  H03G3/30 ,  H04B17/00

CPC classification number: H04B1/0475 ,  H03F1/0227 ,  H03F1/305

Abstract: Radio frequency (RF) transmitter circuitry, which includes an RF power amplifier (PA) and an envelope tracking power supply, is disclosed. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply signal. The envelope tracking power supply provides the envelope power supply signal, which has switching ripple. Further, the envelope tracking power supply operates in either a normal switching ripple mode or a modified switching ripple mode, such that during the normal switching ripple mode, the envelope power supply signal has normal switching ripple, and during the modified switching ripple mode, the envelope power supply signal has modified switching ripple. When the modified switching ripple is required, the envelope tracking power supply operates in the modified switching ripple mode.

Abstract translation: 公开了射频（RF）发射器电路，其包括RF功率放大器（PA）和包络跟踪电源。 RF PA接收并放大RF输入信号以使用包络电源信号提供RF发送信号。 包络跟踪电源提供具有开关纹波的包络电源信号。 此外，包络跟踪电源以正常开关纹波模式或修改的开关纹波模式操作，使得在正常开关纹波模式期间，包络电源信号具有正常的开关纹波，并且在修改的开关纹波模式期间， 包络电源信号具有修改的开关纹波。 当需要修改的开关纹波时，包络跟踪电源以修改后的开关纹波模式工作。

公开(公告)号：WO2012109227A2

公开(公告)日：2012-08-16

申请号：PCT/US2012024124

申请日：2012-02-07

Applicant: RF MICRO DEVICES INC

Inventor： KHLAT NADIM ,  HORLANDER KARL F

IPC: H03F1/02

CPC classification number: H03F1/0227 ,  H03F3/24 ,  H03F2200/411 ,  H03F2200/447 ,  H03F2200/465

Abstract: An open loop envelope tracking system calibration technique and circuitry are proposed. A radio frequency power amplifier receives a modulated signal. An envelope tracker power converter generates a modulated power amplifier supply voltage for the radio frequency power amplifier based on a control signal derived from the modulated signal. A first output power and a second output power of the radio frequency power amplifier are measured when the control signal is respectively delayed by a first delay period and a second delay period. A sensitivity of the output power of the radio frequency power amplifier is near a maximum near the first delay period and the second delay period. The first delay period and/or the second delay period are adjusted until the first output power substantially equals the second output power. The first delay period and the second delay period are used to obtain a calibrated fine tuning delay offset.

Abstract translation: 提出了开环包络跟踪系统校准技术和电路。 射频功率放大器接收调制信号。 信封跟踪器功率转换器基于从调制信号导出的控制信号，为射频功率放大器生成调制功率放大器电源电压。 当控制信号分别延迟第一延迟周期和第二延迟周期时，测量射频功率放大器的第一输出功率和第二输出功率。 射频功率放大器的输出功率的灵敏度在第一延迟周期和第二延迟周期附近接近最大值。 第一延迟周期和/或第二延迟周期被调整直到第一输出功率基本上等于第二输出功率。 第一延迟周期和第二延迟周期用于获得经校准的微调延迟偏移。

公开(公告)号：WO2012068258A3

公开(公告)日：2012-05-24

申请号：PCT/US2011/061007

申请日：2011-11-16

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  MYARA, David ,  RAFIN, Jérémie

IPC: G06F7/552

Abstract: Disclosed is a coordinate rotation digital computer (CORDIC) having a maximum value circuit that selects a larger of the first component or the second component. A minimum value circuit selects a minimum operand that is a smaller one of the first component or the second component. Also included are N rotator stages, each corresponding to a unique one of N predetermined vectors, each of the N rotator stages having a first multiply circuit to multiply the maximum operand by a cosine coefficient of a predetermined vector to output a first rotation component, a second multiply circuit for multiplying the minimum operand by a sine coefficient of the predetermined vector to output a second rotation component, and an adder circuit for adding the first rotation component to the second rotation component to output one of N results, and a maximum value circuit for outputting a maximum one of the N results.

公开(公告)号：WO2012027039A1

公开(公告)日：2012-03-01

申请号：PCT/US2011/044857

申请日：2011-07-21

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim

IPC: H03F1/02

CPC classification number: H03F1/0227 ,  H03F1/0244

Abstract: A power management system for a radio frequency (RF) power amplifier (PA) load is disclosed. The power management system includes a first switching power supply that is adapted to output a relatively constant voltage, an electronic switch for selectively coupling the first switching power supply to the RF PA load, and a second switching power that is adapted to output a dynamic DC voltage to the RF PA load. The power management system further includes a control system that is adapted to close the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode and to open the electronic switch wherein the relatively constant DC voltage is not supplied to the RF PA load in a second mode.

Abstract translation: 公开了一种用于射频（RF）功率放大器（PA）负载的电源管理系统。 电源管理系统包括适于输出相对恒定电压的第一开关电源，用于将第一开关电源选择性地耦合到RF PA负载的电子开关，以及适于输出动态DC的第二开关电源 电压到RF PA负载。 电力管理系统还包括控制系统，其适于关闭电子开关以在第一模式中向RF PA负载提供除了动态DC电压之外的相对恒定的DC电压，并且打开电子开关，其中相对恒定 在第二模式下，不向RF PA负载提供直流电压。

公开(公告)号：WO2011133542A1

公开(公告)日：2011-10-27

申请号：PCT/US2011/033037

申请日：2011-04-19

Applicant: RF MICRO DEVICES, INC.

Inventor： KHLAT, Nadim ,  KAY, Michael, R.

IPC: H03F1/02 ,  H02M3/07 ,  H03F3/189 ,  H03F3/24

CPC classification number: H03F1/0238 ,  H02M3/07 ,  H03F1/0244 ,  H03F1/025 ,  H03F3/189 ,  H03F3/19 ,  H03F3/21 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/375 ,  H03F2200/451 ,  H03F2200/555 ,  H03G3/004

Abstract: Embodiments disclosed in the detailed description relate to a pseudo-envelope follower power management system used to manage the power delivered to a linear RF power amplifier.

Abstract translation: 在详细描述中公开的实施例涉及用于管理传送到线性RF功率放大器的功率的伪包络跟随器功率管理系统。

公开(公告)号：WO2009003018A2

公开(公告)日：2008-12-31

申请号：PCT/US2008/068153

申请日：2008-06-25

Applicant: RF MICRO DEVICES, INC.

Inventor： LEAHY, Donald, Joseph ,  WARREN, Waite, R., Jr. ,  PARKER, Stephen

IPC: H01L23/552

CPC classification number: H01L23/552 ,  H01L24/97 ,  H01L25/0655 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01016 ,  H01L2924/01018 ,  H01L2924/01029 ,  H01L2924/0103 ,  H01L2924/01033 ,  H01L2924/01046 ,  H01L2924/01047 ,  H01L2924/01078 ,  H01L2924/01079 ,  H01L2924/01082 ,  H01L2924/014 ,  H01L2924/12041 ,  H01L2924/14 ,  H01L2924/1815 ,  H01L2924/3025 ,  H05K1/0218 ,  H05K3/0052 ,  H05K3/181 ,  H05K3/284 ,  H05K2203/0723 ,  Y10T29/49 ,  Y10T29/49002 ,  Y10T29/49117 ,  Y10T29/49124 ,  Y10T29/49126 ,  Y10T29/49128 ,  Y10T29/4913 ,  Y10T29/49131 ,  Y10T29/49144 ,  Y10T29/49146 ,  Y10T29/49153 ,  Y10T29/49155 ,  Y10T29/49204 ,  Y10T29/49789

Abstract: In one embodiment, a meta-module having circuitry for two or more modules is formed on a substrate, which is preferably a laminated substrate. The circuitry for the different modules is initially formed on the single meta- module. Each module will have one or more component areas in which the circuitry is formed. A metallic structure is formed on or in the substrate for each component area to be shielded. A single body, such as an overmold body, is then formed over all of the modules on the meta-module. At least a portion of the metallic structure for each component area to be shielded is then exposed through the body by a cutting, drilling, or like operation. Next, an electromagnetic shield material is applied to the exterior surface of the body of each of the component areas to be shielded and in contact with the exposed portion of the metallic structures.

Abstract translation: 在一个实施例中，具有用于两个或更多个模块的电路的元模块形成在衬底上，衬底优选为层压衬底。 最初在单个元模块上形成不同模块的电路。 每个模块将具有其中形成电路的一个或多个组件区域。 对于要屏蔽的每个部件区域，在基板上或基板上形成金属结构。 然后在元模块上的所有模块上形成单体，例如包覆模体。 然后，通过切割，钻孔或类似的操作将待屏蔽的每个部件区域的金属结构的至少一部分暴露通过主体。 接下来，将电磁屏蔽材料施加到要被屏蔽并与金属结构的暴露部分接触的每个部件区域的主体的外表面上。

公开(公告)号：WO2006115717A3

公开(公告)日：2007-07-05

申请号：PCT/US2006012619

申请日：2006-04-04

Applicant: RF MICRO DEVICES INC

Inventor： KHLAT NADIM ,  BAUDER RUEDIGER

IPC: H04L27/10

CPC classification number: H04L27/362 ,  H03F1/0205 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/451 ,  H03G3/3042 ,  H04W52/52

Abstract: Power control circuitry is provided for controlling an output power of a transmitter of a mobile terminal operating according to a continuous time transmit scheme such as Wideband Code Division Multiple Access (WCDMA). Transmit circuitry processes a quadrature baseband signal to provide a radio frequency transmit signal. The radio frequency transmit signal is coupled to the power control circuitry via a coupler and processed to provide a feedback amplitude signal. The power control circuitry operates to remove an amplitude modulation component from the feedback signal using a reference amplitude signal generated from the quadrature baseband signal, thereby providing a measured gain signal of the transmit circuitry. Based on the measured gain signal and a target output power, the power control circuitry operates to control a gain of the transmit circuitry such that the output power of the transmit circuitry is within a predetermined range about the target output power.

Abstract translation: 提供功率控制电路，用于控制根据诸如宽带码分多址（WCDMA）的连续时间发射方案操作的移动终端的发射机的输出功率。 发射电路处理正交基带信号以提供射频发射信号。 射频发射信号通过耦合器耦合到功率控制电路，并被处理以提供反馈振幅信号。 功率控制电路使用从正交基带信号产生的参考振幅信号，从反馈信号中去除幅度调制分量，从而提供测量的发射电路的增益信号。 基于测量的增益信号和目标输出功率，功率控制电路操作以控制发射电路的增益，使得发射电路的输出功率在关于目标输出功率的预定范围内。

公开(公告)号：WO2006135584A1

公开(公告)日：2006-12-21

申请号：PCT/US2006/021452

申请日：2006-06-02

Applicant: RF MICRO DEVICES, INC.

Inventor： KENNAN, Wayne

IPC: H03F3/04

CPC classification number: H03F3/72 ,  H03F1/0211 ,  H03F1/0277 ,  H03F1/0288 ,  H03F3/24 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/516 ,  H03F2203/7227

Abstract: An efficient power amplifier circuitry for a mobile terminal or similar wireless communication device is provided. The power amplifier circuitry includes an output stage configured as a collector controlled Doherty amplifier, wherein the collector controlled Doherty amplifier increases the efficiency of the power amplifier at backoff power levels. The output stage includes main and peaking amplifiers connected in parallel and operating 90 degrees out-of-phase. The main amplifier is controlled using a first variable supply voltage, and the peaking amplifier is controlled using a second variable supply voltage. The first and second variable supply voltages are provided such that the main amplifier is active and the peaking amplifier is inactive for output power levels less than a predetermined backoff from a maximum output power level, and both the main amplifier and peaking amplifiers are active and operating in concert for output power levels greater than the predetermined backoff.

Abstract translation: 提供了一种用于移动终端或类似无线通信设备的高效功率放大器电路。 功率放大器电路包括被配置为收集器控制的Doherty放大器的输出级，其中集电极控制的Doherty放大器提高功率放大器在退避功率电平下的效率。 输出级包括并联连接的主峰值和峰值放大器，工作在90度以外的相位。 使用第一可变电源电压来控制主放大器，并且使用第二可变电源电压来控制峰值放大器。 提供第一和第二可变电源电压，使得主放大器是有效的，并且峰化放大器对于从最大输出功率电平小于预定退避的输出功率电平是无效的，并且主放大器和峰值放大器都是有效的和操作的 一致地输出功率水平大于预定的退避。