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1. 发明授权

US09081555B2 Method and apparatus for current derating with integrated temperature sensing 有权
标题翻译：具有集成温度传感的电流降额的方法和装置
公开(公告)号：US09081555B2
公开(公告)日：2015-07-14
申请号：US13548467
申请日：2012-07-13
申请人： Xinli Peng , Troy Stockstad , Ricardo T. Goncalves
发明人： Xinli Peng , Troy Stockstad , Ricardo T. Goncalves
IPC分类号： H05B33/08 , G06F1/20 , G06F1/32
CPC分类号： G06F1/206 , G06F1/3215 , G06F1/3296 , H05B33/0854 , H05B33/089 , Y02D10/172
摘要： A method and apparatus for derating current and for derating current for a camera flash. The method comprises monitoring a local junction temperature of a module. The local junction temperature is converted into a local junction current. The local junction current is then compared with a reference current, which is independent of temperature. After the current comparison and subtraction is made, a derate control current is obtained to generate the LED reference current. After the temperature crosses the temperature threshold, the derate control current is derated. Both the temperature threshold and current derate slope are programmable and precisely controlled. The LED output current is regulated and proportional to the LED reference current. If the local junction temperature is greater than the temperature threshold, the LED output current is derated at the moment of the camera flash to avoid thermal overload.
摘要翻译：一种用于降低电流和用于相机闪光灯的降额电流的方法和装置。该方法包括监测模块的局部结温。局部结温转换为局部结电流。然后将局部结电流与独立于温度的参考电流进行比较。在进行当前比较和减法之后，获得降额控制电流以产生LED参考电流。温度超过温度阈值后，降额控制电流降额。温度阈值和电流降额斜率均可编程且精确控制。 LED输出电流被调节并与LED参考电流成比例。如果局部结温大于温度阈值，则在相机闪光时，LED输出电流会降额，以避免热过载。

2. 发明授权

US08483985B2 PLL loop bandwidth calibration 有权
标题翻译： PLL环路带宽校准
公开(公告)号：US08483985B2
公开(公告)日：2013-07-09
申请号：US11962016
申请日：2007-12-20
申请人： Troy Stockstad , Tracy Hall
发明人： Troy Stockstad , Tracy Hall
IPC分类号： G06F19/00
CPC分类号： H03L7/0898 , H03L7/18
摘要： Systems and methodologies are described that facilitate calibration of the loop bandwidth of a phase-locked loop (PLL). Calibration for the loop bandwidth of a PLL as described herein can be performed by optimizing the loop response of the PLL. Optimization of the loop response of the PLL can be achieved by modifying the value of a feedback counter of the PLL to induce a loop response at the PLL. The loop response of the PLL can be measured and compared to an ideal loop response. Based on this comparison, appropriate adjustments can be made to the PLL. Further, various techniques described herein facilitate calibration of a PLL by adjusting only parameters of a charge pump of the PLL without requiring individual control mechanisms for each element of the PLL, thereby improving PLL performance and manufacturing yield.
摘要翻译：描述了有助于校准锁相环（PLL）的环路带宽的系统和方法。可以通过优化PLL的环路响应来执行如本文所述的PLL的环路带宽的校准。 PLL的环路响应的优化可以通过修改PLL的反馈计数器的值来在PLL处引起环路响应来实现。可以测量PLL的环路响应并将其与理想的环路响应进行比较。基于此比较，可以对PLL进行适当的调整。此外，本文描述的各种技术通过仅调整PLL的电荷泵的参数而不需要针对PLL的每个元件的单独的控制机制来促进PLL的校准，从而提高PLL性能和制造产量。

3. 发明申请

US20050048931A1 FSK modulator using IQ up-mixers and sinewave coded DACs 有权
标题翻译： FSK调制器使用IQ上变频器和正弦波编码DAC
公开(公告)号：US20050048931A1
公开(公告)日：2005-03-03
申请号：US10653322
申请日：2003-09-02
申请人： Klaas Wortel , Luis Briones , Troy Stockstad
发明人： Klaas Wortel , Luis Briones , Troy Stockstad
IPC分类号： H04L27/12 , H04B1/02
CPC分类号： H04L27/12
摘要： A radio transmitter system designed using an FSK modulator with IQ up-mixers and sinewave coded digital-to-analog converters (DACs). The radio transmitter system may include a frequency shift keying (FSK) coding logic circuit coupled to the inputs of an IQ modulation and image reject up-mixer through a respective DAC and a respective low pass filter (LPF) for each the I and the Q channels. The FSK modulation scheme may employ sine and cosine signals for the I and Q channels, respectively, where the sine and cosine waves are directly coded into the DACs. The coded levels required by the DACs may be generated using current sources and may be Gray-coded. The output of the IQ modulation and image reject up-mixer may be connected to a power amplifier, which may be used to transmit the modulated RF signal via a loop antenna.
摘要翻译：无线电发射机系统使用具有IQ上变频器和正弦波编码的数模转换器（DAC）的FSK调制器设计。无线电发射机系统可以包括频移键控（FSK）编码逻辑电路，其通过相应的DAC和针对I和Q的每个的相应的低通滤波器（LPF）耦合到IQ调制和图像拒绝上混频器的输入频道 FSK调制方案可以分别将正弦和余弦信号用于I和Q通道，其中正弦和余弦波被直接编码到DAC中。 DAC所需的编码电平可以使用电流源生成，并且可以是灰色编码的。 IQ调制和图像拒绝上混频器的输出可以连接到功率放大器，功率放大器可以用于经由环形天线发送经调制的RF信号。

4. 发明申请

US20140015446A1 METHOD AND APPARATUS FOR CURRENT DERATING WITH INTEGRATED TEMPERATURE SENSING 有权
标题翻译：用于一体化温度传感的电流方法和装置
公开(公告)号：US20140015446A1
公开(公告)日：2014-01-16
申请号：US13548467
申请日：2012-07-13
申请人： Xinli Peng , Troy Stockstad , Ricardo T. Goncalves
发明人： Xinli Peng , Troy Stockstad , Ricardo T. Goncalves
IPC分类号： H05B37/02 , H03K3/00
CPC分类号： G06F1/206 , G06F1/3215 , G06F1/3296 , H05B33/0854 , H05B33/089 , Y02D10/172
摘要： A method and apparatus for derating current and for derating current for a camera flash. The method comprises monitoring a local junction temperature of a module. The local junction temperature is converted into a local junction current. The local junction current is then compared with a reference current, which is independent of temperature. After the current comparison and subtraction is made, a derate control current is obtained to generate the LED reference current. After the temperature crosses the temperature threshold, the derate control current is derated. Both the temperature threshold and current derate slope are programmable and precisely controlled. The LED output current is regulated and proportional to the LED reference current. If the local junction temperature is greater than the temperature threshold, the LED output current is derated at the moment of the camera flash to avoid thermal overload.
摘要翻译：一种用于降低电流和用于相机闪光灯的降额电流的方法和装置。该方法包括监测模块的局部结温。局部结温转换为局部结电流。然后将局部结电流与独立于温度的参考电流进行比较。在进行当前比较和减法之后，获得降额控制电流以产生LED参考电流。温度超过温度阈值后，降额控制电流降额。温度阈值和电流降额斜率均可编程且精确控制。 LED输出电流被调节并与LED参考电流成比例。如果局部结温大于温度阈值，则在相机闪光时，LED输出电流会降额，以避免热过载。

5. 发明授权

US08374196B2 Methods and apparatus for a switchable balun for combined Bluetooth® and WLAN operation 有权
标题翻译：用于组合蓝牙®和WLAN操作的可切换平衡 - 不平衡变换器的方法和设备
公开(公告)号：US08374196B2
公开(公告)日：2013-02-12
申请号：US12709390
申请日：2010-02-19
申请人： Troy Stockstad
发明人： Troy Stockstad
IPC分类号： H04J3/16
CPC分类号： H03H7/42 , H03F1/0244 , H03F3/245 , H03F3/45475 , H03F2203/45731
摘要： Methods and apparatus for a switchable balun for combined BLUETOOTH® and WLAN operation. A switchable balun is provided that includes an input circuit for receiving an amplified signal, the input circuit comprising first and second coils connected at a center tap, an output circuit comprising a third coil that is inductively coupled to the first and second coils, the output circuit for outputting an adjusted version of the amplified signal for transmission in a selected transmission mode, and a switch coupled to the center tap, wherein the switch is configured to couple a first voltage to the center tap to select operation in a first transmission mode and to couple a second voltage to the center tap to select operation in a second transmission mode.
摘要翻译：用于组合BLUETOOTH®和WLAN操作的可切换平衡 - 不平衡变换器的方法和设备。提供了一种可切换平衡 - 不平衡变压器，其包括用于接收放大信号的输入电路，所述输入电路包括以中心抽头连接的第一和第二线圈，输出电路，包括电感耦合到第一和第二线圈的第三线圈，用于输出用于在选择的传输模式中传输的经调整版本的放大信号的电路和耦合到中心抽头的开关，其中开关被配置为将第一电压耦合到中心抽头以选择第一传输模式中的操作，以及将第二电压耦合到中心抽头以在第二传输模式中选择操作。

6. 发明授权

US07450916B1 Excess current and saturation detection and correction in a power amplifier 有权
标题翻译：在功率放大器中过电流和饱和度检测和校正
公开(公告)号：US07450916B1
公开(公告)日：2008-11-11
申请号：US11099936
申请日：2005-04-06
申请人： Alexander Wayne Hietala , Troy Stockstad
发明人： Alexander Wayne Hietala , Troy Stockstad
IPC分类号： H04B1/04
CPC分类号： H04B1/06 , H04B2001/0416
摘要： A system and method for detecting and correcting excess current in a power amplifier in a transmit chain of a mobile terminal are provided. Over current detection and correction circuitry compares a current detection signal indicative of an output current of the power amplifier to a maximum current ramp during ramp-up for a transmit burst. If the current detection signal exceeds the maximum current ramp, then a power control signal controlling a supply voltage provided to the power amplifier circuitry is reduced, thereby reducing the output power and output current. Over voltage detection and correction circuitry compares a voltage detection signal indicative of an output voltage of the power amplifier to a maximum voltage ramp during ramp-up for the transmit burst. If the voltage detection signal exceeds the maximum voltage ramp, then the power control signal is reduced.
摘要翻译：提供了一种用于检测和校正移动终端的发射链中的功率放大器中的过电流的系统和方法。过电流检测和校正电路将指示功率放大器的输出电流的电流检测信号与用于发送脉冲串的斜坡上升期间的最大电流斜坡进行比较。如果电流检测信号超过最大电流斜坡，则控制提供给功率放大器电路的电源电压的功率控制信号被减小，从而降低输出功率和输出电流。过电压检测和校正电路将表示功率放大器的输出电压的电压检测信号与用于发送脉冲串的斜坡上升期间的最大电压斜坡进行比较。如果电压检测信号超过最大电压斜坡，则功率控制信号减小。

7. 发明授权

US07333781B1 Power correction loop for a power amplifier 有权
标题翻译：功率放大器的功率校正回路
公开(公告)号：US07333781B1
公开(公告)日：2008-02-19
申请号：US11100089
申请日：2005-04-06
申请人： Troy Stockstad , Alexander Wayne Hietala
发明人： Troy Stockstad , Alexander Wayne Hietala
IPC分类号： H04B1/04
CPC分类号： H04B1/04 , H03F1/0205 , H03F1/0211 , H03F1/0261 , H03F3/24 , H03F2200/207 , H03F2200/336 , H03F2200/408 , H03F2200/451 , H03F2200/462 , H03F2200/504 , H04B2001/0416
摘要： A system is provided for correcting an output power of a power amplifier in a transmit chain of a mobile terminal. In one embodiment, the system includes output power correction circuitry that corrects the output power of the power amplifier during ramp-up for a transmit burst. The output power of the power amplifier is controlled based on a power control signal, which is provided by combining an amplitude component of a modulated signal and a corrected ramping signal provided by the output power correction circuitry. In general, a power amplifier ramp generator provides a ramping signal. The ramping signal is converted to a desired output power signal, which is subtracted from a detected output power signal to provide an error signal. The error signal is integrated to provide an adjustment signal, which is combined with an ideal ramping signal to provide the corrected ramping signal.
摘要翻译：提供了一种用于校正移动终端的发射链中的功率放大器的输出功率的系统。在一个实施例中，该系统包括输出功率校正电路，其在发射突发的斜坡上升期间校正功率放大器的输出功率。基于功率控制信号来控制功率放大器的输出功率，该功率控制信号通过组合调制信号的振幅分量和由输出功率校正电路提供的校正斜坡信号而提供。通常，功率放大器斜坡发生器提供斜坡信号。斜坡信号被转换成期望的输出功率信号，其从检测到的输出功率信号中减去以提供误差信号。积分误差信号以提供调整信号，该调整信号与理想的斜坡信号组合以提供校正的斜坡信号。

8. 发明申请

US20140028285A1 METHOD AND APPARATUS FOR TEMPERATURE ADJUSTED CONTROL OF BATFET CURRENT SENSING 有权
标题翻译： BATFET电流传感温度调节控制方法与装置
公开(公告)号：US20140028285A1
公开(公告)日：2014-01-30
申请号：US13558117
申请日：2012-07-25
申请人： Baiying Yu , Nihit Bajaj , Troy Stockstad , Eric I. Mikuteit
发明人： Baiying Yu , Nihit Bajaj , Troy Stockstad , Eric I. Mikuteit
IPC分类号： G01R21/14
CPC分类号： G01R11/185 , G01R19/0092
摘要： A method and apparatus for providing a temperature sensing loop used in connection with a current sensing component, such as a BATFET, in order to compensate for variations in the BATFET's resistance due to temperature variations. The temperature sensing loop detects a temperature of the BATFET and regulates the gate voltage of the BATFET based on the detected temperature in order to compensate for changes in the BATFET's resistance. The temperature sensing feedback loop maintains the BATFET at a constant resistance for current sensing through negative feedback control. The BATFET and temperature sensing loop can be provided as components of an on-chip fuel gauging application for a UE.
摘要翻译：一种用于提供与电流感测部件（例如BATFET）相关联使用的温度感测回路的方法和装置，以便补偿由于温度变化引起的BATFET电阻的变化。温度检测回路检测BATFET的温度，并根据检测到的温度调节BATFET的栅极电压，以补偿BATFET电阻的变化。温度感测反馈环路通过负反馈控制将BATFET保持在电流感测的恒定电阻。 BATFET和温度感测回路可以作为用于UE的片上燃料测量应用的组件来提供。

9. 发明授权

US07962109B1 Excess current and saturation detection and correction in a power amplifier 有权
标题翻译：在功率放大器中过电流和饱和度检测和校正
公开(公告)号：US07962109B1
公开(公告)日：2011-06-14
申请号：US11679201
申请日：2007-02-27
申请人： Troy Stockstad , Alexander Wayne Hietala , Fares Jaoude , Roman Zbigniew Arkiszewski
发明人： Troy Stockstad , Alexander Wayne Hietala , Fares Jaoude , Roman Zbigniew Arkiszewski
IPC分类号： H04B17/00
CPC分类号： H03G3/3047
摘要： A system and method for detecting and correcting over-current and/or over-voltage conditions in power amplifier circuitry in a transmit chain of a mobile terminal are provided. In general, over-current detection and correction circuitry combines a current detection signal indicative of a current provided to or drained by the power amplifier circuitry during ramp-up for a transmit burst and a substantially inverse current ramping profile to provide a first constant value. The first constant value is compared to a current threshold or limit value to determine whether an over-current condition exists. If an over-current condition exists, the over-current detection and correction circuitry operates to reduce the output power of the power amplifier circuitry during ramp-up for the transmit burst to correct for the over-current condition. In a similar manner, over-voltage detection circuitry operates to detect and correct over-voltage conditions during ramp-up for the transmit burst.
摘要翻译：提供了一种用于在移动终端的发射链中的功率放大器电路中检测和校正过电流和/或过电压条件的系统和方法。通常，过电流检测和校正电路组合指示在斜波上升期间功率放大器电路提供给发射脉冲串的电流的电流检测信号和用于发射脉冲串的基本上反向电流斜坡分布以提供第一恒定值。将第一常数值与当前阈值或限制值进行比较，以确定是否存在过电流条件。如果存在过电流状况，则过流检测和校正电路用于在发射突发的斜坡上降低功率放大器电路的输出功率，以校正过电流状况。以类似的方式，过电压检测电路用于在发射突发的斜坡上升期间检测和校正过电压状况。

10. 发明授权

US08044726B2 Systems and methods for self testing a voltage controlled oscillator 有权
标题翻译：用于自检电压振荡器的系统和方法
公开(公告)号：US08044726B2
公开(公告)日：2011-10-25
申请号：US12406028
申请日：2009-03-17
申请人： Tracy Hall , Troy Stockstad , Jin Wook Kim
发明人： Tracy Hall , Troy Stockstad , Jin Wook Kim
IPC分类号： H03L7/12 , G01R23/00
CPC分类号： H03L7/18
摘要： A method for self testing a multiband voltage controlled oscillator (VCO) is described. A first frequency band in a VCO is selected. An N value is selected for a frequency divider that produces a tuning voltage for the VCO that is between a low tuning voltage limit and a high tuning voltage limit for the VCO. The N value is adjusted in one direction until the tuning voltage reaches one of the tuning voltage limits. This N value at the tuning voltage is a first limit value. The frequency bands are switched from the first frequency band to a second frequency band that is adjacent to the first frequency band.
摘要翻译：描述了一种用于自测试多频带压控振荡器（VCO）的方法。选择VCO中的第一频带。为分频器选择一个N值，该分频器产生VCO的调谐电压，该调谐电压位于VCO的低调谐电压极限和高调谐电压极限之间。 N值在一个方向上调节，直到调谐电压达到调谐电压极限之一。调谐电压下的N值为第一极限值。频带从第一频带切换到与第一频带相邻的第二频带。

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