公开(公告)号：US20120218047A1

公开(公告)日：2012-08-30

申请号：US13405481

申请日：2012-02-27

Applicant: Julio Costa ,  Michael Carroll

Inventor： Julio Costa ,  Michael Carroll

IPC: H03F3/04 ,  H01L21/60

CPC classification number: H01L29/7325 ,  H01L23/66 ,  H01L29/0692 ,  H01L29/7371 ,  H01L2223/6644 ,  H01L2224/13022 ,  H01L2224/131 ,  H01L2224/13147 ,  H01L2224/16113 ,  H01L2224/16225 ,  H01L2224/16227 ,  H01L2924/01037 ,  H01L2924/1305 ,  H01L2924/014 ,  H01L2924/00

Abstract: Power amplification devices are disclosed having a vertical ballast configuration to prevent thermal runaway in at least one stack of bipolar transistors formed on a semiconductor substrate. To provide a negative feedback to prevent thermal runaway in the bipolar transistors, a conductive layer is formed over and coupled to the stack. A resistivity of the conductive layer provides an effective resistance that prevents thermal runaway in the bipolar transistors. The vertical placement of the conductive layer allows for vertical heat dissipation and thus provides ballasting without concentrating heat.

Abstract translation: 公开了具有垂直镇流器配置的功率放大器件，以防止形成在半导体衬底上的至少一个双极晶体管堆叠中的热失控。 为了提供负反馈以防止双极晶体管中的热失控，导电层形成在堆叠上并耦合到堆叠。 导电层的电阻率提供了防止双极晶体管中的热失控的有效电阻。 导电层的垂直放置允许垂直散热，从而在不集中热的情况下提供压载。

公开(公告)号：US08248166B2

公开(公告)日：2012-08-21

申请号：US13074051

申请日：2011-03-29

Applicant: Kevin W. Kobayashi

Inventor： Kevin W. Kobayashi

IPC: H03F3/04

CPC classification number: H03F1/32 ,  H03F1/0261 ,  H03F3/211 ,  H03F2200/93

Abstract: To reduce a knee voltage of a Darlington amplifier, a negative voltage is applied by a depletion mode FET between the emitter of one amplifying transistor and the base of another amplifying transistor to provide a reduced potential, which reduces the knee voltage of the Darlington amplifier. Reducing the knee voltage of the Darlington amplifier decreases the size of a saturation region thereby increasing the linearity of the Darlington amplifier.

Abstract translation: 为了降低达林顿放大器的拐点电压，通过耗尽型FET在一个放大晶体管的发射极和另一个放大晶体管的基极之间施加负电压，以提供降低的电位，从而降低达林顿放大器的拐点电压。 降低达林顿放大器的拐点电压会降低饱和区域的大小，从而增加达林顿放大器的线性度。

公开(公告)号：US20120207252A1

公开(公告)日：2012-08-16

申请号：US13198074

申请日：2011-08-04

Applicant: Chris Levesque ,  Jean-Christophe Berchtold ,  Joseph Hubert Colles

Inventor： Chris Levesque ,  Jean-Christophe Berchtold ,  Joseph Hubert Colles

IPC: H04L27/06

CPC classification number: H03C3/09 ,  H02M3/07 ,  H02M3/156 ,  H02M2001/0064 ,  H02M2001/008 ,  H03F1/0227 ,  H03F1/0261 ,  H03F1/0277 ,  H03F1/52 ,  H03F1/523 ,  H03F1/56 ,  H03F3/189 ,  H03F3/195 ,  H03F3/24 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/102 ,  H03F2200/171 ,  H03F2200/18 ,  H03F2200/27 ,  H03F2200/336 ,  H03F2200/411 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/421 ,  H03F2200/426 ,  H03F2200/429 ,  H03F2200/504 ,  H03F2200/555 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21145 ,  H03F2203/21157 ,  H03F2203/21175 ,  H03F2203/7209 ,  H03F2203/7221 ,  H03F2203/7236 ,  H03G3/3042 ,  H03J7/04 ,  H04B1/405

Abstract: A first programmable frequency oscillator, which includes a first ramp comparator and programmable signal generation circuitry is disclosed. The programmable signal generation circuitry provides a ramping signal, which has a first frequency, based on a desired first frequency. The first ramp comparator receives the ramping signal and provides a first ramp comparator output signal based on the ramping signal. The first ramp comparator output signal is fed back to the programmable signal generation circuitry, such that the ramping signal is based on the desired first frequency and the first ramp comparator output signal. However, the first ramp comparator has a first propagation delay, which introduces a frequency error into the programmable frequency oscillator. Therefore, the first frequency is not proportional to one or more slopes of the ramping signal. As a result, the programmable signal generation circuitry compensates for the frequency error based on the desired first frequency.

Abstract translation: 公开了一种包括第一斜坡比较器和可编程信号发生电路的第一可编程频率振荡器。 可编程信号产生电路基于期望的第一频率提供具有第一频率的斜坡信号。 第一斜坡比较器接收斜坡信号，并且基于斜坡信号提供第一斜坡比较器输出信号。 第一斜坡比较器输出信号被反馈到可编程信号产生电路，使得斜坡信号基于期望的第一频率和第一斜坡比较器输出信号。 然而，第一斜坡比较器具有第一传播延迟，其将频率误差引入到可编程频率振荡器中。 因此，第一频率与斜坡信号的一个或多个斜率成正比。 结果，可编程信号产生电路基于期望的第一频率来补偿频率误差。

公开(公告)号：US20120184233A1

公开(公告)日：2012-07-19

申请号：US13288590

申请日：2011-11-03

Applicant: Paul D. Jones ,  David E. Jones ,  William David Southcombe ,  Chris Levesque ,  Scott Yoder ,  Terry J. Stockert

Inventor： Paul D. Jones ,  David E. Jones ,  William David Southcombe ,  Chris Levesque ,  Scott Yoder ,  Terry J. Stockert

IPC: H03G3/20

CPC classification number: H03F1/0227 ,  H03F1/0261 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/602 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/171 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/318 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21157

Abstract: Radio Frequency (RF) signal conditioning circuitry, which includes RF detection circuitry and RF attenuation circuitry is disclosed. The RF detection circuitry receives and detects an RF sample signal to provide an RF detection signal. The RF attenuation circuitry has an attenuation circuitry input, and receives and attenuates the RF sample signal via the attenuation circuitry input to provide an attenuated RF signal. The RF attenuation circuitry presents an attenuation circuitry input impedance at the attenuation circuitry input. The attenuated RF signal and the RF detection signal are provided concurrently.

Abstract translation: 公开了包括RF检测电路和RF衰减电路的射频（RF）信号调理电路。 RF检测电路接收并检测RF采样信号以提供RF检测信号。 RF衰减电路具有衰减电路输入，并且经由衰减电路输入端接收并衰减RF采样信号以提供衰减的RF信号。 RF衰减电路在衰减电路输入端呈现衰减电路输入阻抗。 同时提供衰减的RF信号和RF检测信号。

公开(公告)号：US08224265B1

公开(公告)日：2012-07-17

申请号：US11151022

申请日：2005-06-13

Applicant: Dennis Mahoney

Inventor： Dennis Mahoney

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H04B2001/0425

Abstract: A method is provided for optimizing Amplitude Modulation to Amplitude Modulation (AM/AM) and Amplitude Modulation to Phase Modulation (AM/PM) predistortion of a polar modulated transmit signal in a mobile terminal in order to optimize an Output Radio Frequency Spectrum (OFRS) of the mobile terminal. The AM/AM and AM/PM predistortion of the polar modulated transmit signal compensates for AM/AM and AM/PM distortion of a power amplifier in the transmit chain of the mobile terminal. However, the AM/AM and AM/PM distortion of the power amplifier cannot be easily measured or computed. Accordingly, the present invention provides a system and method for optimizing coefficients for polynomials defining the AM/AM and AM/PM predistortion of the polar modulated transmit signal based on optimizing the OFRS of the mobile terminal.

Abstract translation: 提供一种用于优化移动终端中的极化调制发射信号的幅度调制到幅度调制（AM / AM）和幅度调制到相位调制（AM / PM）预失真的方法，以优化输出射频频谱（OFRS） 的移动终端。 极地调制发射信号的AM / AM和AM / PM预失真补偿了移动终端发射链中的功率放大器的AM / AM和AM / PM失真。 然而，功率放大器的AM / AM和AM / PM失真不容易测量或计算。 因此，本发明提供了一种基于优化移动终端的OFRS来优化定义极地调制发射信号的AM / AM和AM / PM预失真的多项式的系数的系统和方法。

公开(公告)号：US20120176196A1

公开(公告)日：2012-07-12

申请号：US13343840

申请日：2012-01-05

Applicant: Nadim Khlat

Inventor： Nadim Khlat

IPC: H03G3/20

CPC classification number: H03G3/3047 ,  H03F1/0277 ,  H03F3/24 ,  H03F3/72

Abstract: A power management system for a multi-carriers transmitter is disclosed. The power management system includes a first switcher having a control input and a power output, and a second switcher having a control input and a power output. Also included is a mode switch having a mode control input, wherein the mode switch is adapted to selectively couple the power output of the first switcher to the power output of the second switcher in response to a mode control signal received by the mode control input. Further included is a control system adapted to generate the mode control signal. The control system is coupled to the mode control input of the mode switch.

Abstract translation: 公开了一种用于多载波发射机的电源管理系统。 电源管理系统包括具有控制输入和功率输出的第一切换器，以及具有控制输入和功率输出的第二切换器。 还包括具有模式控制输入的模式开关，其中模式开关适于响应于由模式控制输入接收的模式控制信号而选择性地将第一切换器的功率输出耦合到第二切换器的功率输出。 还包括适于产生模式控制信号的控制系统。 控制系统耦合到模式开关的模式控制输入。

公开(公告)号：US20120175230A1

公开(公告)日：2012-07-12

申请号：US13311728

申请日：2011-12-06

Applicant: Jonathan Hale Hammond ,  Philippe Gorisse

Inventor： Jonathan Hale Hammond ,  Philippe Gorisse

IPC: H02N1/00 ,  H01H59/00

CPC classification number: H01H59/0009 ,  B81B7/008 ,  B81B2201/014 ,  B81B2203/0118 ,  H01H1/0036 ,  H01H1/50 ,  Y10T307/76

Abstract: The present disclosure provides a system and method for controlling positioning of a movable member of a MEMS microactuator to reduce bouncing and ringing. The system includes control circuitry in communication with the MEMS microactuator. The control circuitry is adapted to linearly increase an actuation signal from a first state to a second state to urge the movable member from a first position to a second position and hold the movable member in the second position. The control circuitry is further adapted to linearly decrease the actuation signal from the second state to the first state to release the movable member to the first position. A transition time is not less than the inverse of one quarter of a natural frequency of the movable member as the movable member moves to the first position.

Abstract translation: 本公开提供了一种用于控制MEMS微致动器的可移动部件的定位以减少弹跳和振铃的系统和方法。 该系统包括与MEMS微致动器通信的控制电路。 控制电路适于将致动信号从第一状态线性地增加到第二状态，以将可动构件从第一位置推动到第二位置，并将可动构件保持在第二位置。 控制电路还适于将致动信号从第二状态线性地减小到第一状态，以将可移动部件释放到第一位置。 转动时间不小于当可移动部件移动到第一位置时可移动部件的固有频率的四分之一的倒数。

公开(公告)号：US20120170690A1

公开(公告)日：2012-07-05

申请号：US13172371

申请日：2011-06-29

Applicant: Christopher Truong Ngo ,  Roman Zbigniew Arkiszewski ,  Brad Hunkele

Inventor： Christopher Truong Ngo ,  Roman Zbigniew Arkiszewski ,  Brad Hunkele

IPC: H04L27/06

CPC classification number: H03F1/0227 ,  H03F1/0261 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/602 ,  H03F3/72 ,  H03F2200/171 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/318 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03F2203/21157

Abstract: An automatically configurable 2-wire/3-wire serial communications interface (AC23SCI), which includes start-of-sequence (SOS) detection circuitry and sequence processing circuitry, is disclosed. When the SOS detection circuitry is coupled to a 2-wire serial communications bus, the SOS detection circuitry detects an SOS of a received sequence based on a serial data signal and a serial clock signal. When the SOS detection circuitry is coupled to a 3-wire serial communications bus, the SOS detection circuitry detects the SOS of the received sequence based on a chip select (CS) signal. The SOS detection circuitry provides an indication of detection of the SOS to the sequence processing circuitry, which initiates processing of the received sequence using the serial data signal and the serial clock signal upon the detection of the SOS. As such, the AC23SCI automatically configures itself for operation with some 2-wire and some 3-wire serial communications buses without external intervention.

Abstract translation: 公开了一种自动配置的2线/ 3线串行通信接口（AC23SCI），其包括序列启动（SOS）检测电路和序列处理电路。 当SOS检测电路耦合到2线串行通信总线时，SOS检测电路基于串行数据信号和串行时钟信号检测接收序列的SOS。 当SOS检测电路耦合到3线串行通信总线时，SOS检测电路基于芯片选择（CS）信号检测接收到的序列的SOS。 SOS检测电路提供对序列处理电路的SOS的检测的指示，该序列处理电路在检测到SOS时使用串行数据信号和串行时钟信号启动接收到的序列的处理。 因此，AC23SCI自动配置自己的操作与一些2线和一些3线串行通信总线，无需外部干预。

公开(公告)号：US08213878B1

公开(公告)日：2012-07-03

申请号：US12567081

申请日：2009-09-25

Applicant: Brian Robbins ,  Cody Hale ,  Ryan Pratt

Inventor： Brian Robbins ,  Cody Hale ,  Ryan Pratt

IPC: H04B1/44

CPC classification number: H04B1/406

Abstract: A RF switch may be used as a power splitter in order to allow WLAN and Bluetooth (BT) coexistence. Multiple branches of the RF switch are enabled concurrently, which allows WLAN and BT signals to be received simultaneously. The RF switch functions as a power splitter to split signals received from an antenna to both a WLAN receiver and a BT receiver. In one embodiment, a second switch may be placed on an output of a low noise amplifier (LNA). This configuration will operate as a power splitter between WLAN receiver port and a BT port, and maximize the receiver sensitivity by amplifying both the WLAN and BT signals. One or both of the two switches may also function to bypass the LNA when the LNA is not needed to provide a low loss RF path, which serves to broaden the dynamic range of the device and avoid signal distortion during periods of increased signal power.

Abstract translation: RF开关可以用作功率分配器，以允许WLAN和蓝牙（BT）共存。 RF开关的多个分支同时使能，这允许同时接收WLAN和BT信号。 RF开关用作功率分配器，以将从天线接收的信号分离到WLAN接收机和BT接收机。 在一个实施例中，第二开关可以放置在低噪声放大器（LNA）的输出端上。 此配置将作为WLAN接收器端口和BT端口之间的功率分配器工作，并通过放大WLAN和BT信号来最大化接收器灵敏度。 当不需要LNA以提供低损耗RF路径时，两个开关中的一个或两个也可以绕过LNA，其用于扩大器件的动态范围，并避免在增加的信号功率期间的信号失真。

公开(公告)号：US20120146698A1

公开(公告)日：2012-06-14

申请号：US13170593

申请日：2011-06-28

Applicant: Joshua J. Caron

Inventor： Joshua J. Caron

IPC: H03H11/16

CPC classification number: H04B1/48 ,  H04B1/109

Abstract: A radio frequency (RF) switch adapted to reduce third order intermodulation (IM3) products generated as RF signals propagate through the RF switch is disclosed. The RF switch includes N semiconductor switch segments, and N−1 phase shift networks, individual ones of the N−1 phase shift networks being coupled between adjacent ones of the N semiconductor switch segments where N is a natural number greater than 1. In operation, when the RF switch is on, IM3 products generated by the RF switch propagating through the N−1 phase shift networks are phase shifted such that the IM3 products are at least partially canceled.

Abstract translation: 公开了一种适于减少RF信号通过RF开关传播产生的三阶互调（IM3）产品的射频（RF）开关。 RF开关包括N个半导体开关段和N-1个移相网络，N-1个相移网络中的各个相互耦合在N个半导体开关段中的相邻N个半导体开关段之间，其中N是大于1的自然数。在操作中 ，当RF开关导通时，通过N-1个相移网络传播的RF开关产生的IM3产品相移，使得IM3产品至少部分被取消。