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21. 发明申请

US20080042755A1 Method and apparatus to provide digitally controlled crystal oscillators 有权
标题翻译：提供数字控制晶体振荡器的方法和装置
公开(公告)号：US20080042755A1
公开(公告)日：2008-02-21
申请号：US11500083
申请日：2006-08-07
申请人： Gennady Feygin , Khurram Muhammad , Chih-Ming Hung , Meng-Chang Lee
发明人： Gennady Feygin , Khurram Muhammad , Chih-Ming Hung , Meng-Chang Lee
IPC分类号： H03L7/00
CPC分类号： H03L7/24 , H03L1/026 , H03L3/00 , H03L7/0995
摘要： Methods and systems to provide digitally controlled crystal oscillators are disclosed. One example method includes determining a state of an oscillator system and selecting a first output of a digitally controlled crystal oscillator or a second output of a second oscillator based on the determination. In an example implementation, the second oscillator is a ring oscillator.
摘要翻译：公开了提供数字控制晶体振荡器的方法和系统。一个示例性方法包括基于该确定来确定振荡器系统的状态并选择数字控制的晶体振荡器的第一输出或第二振荡器的第二输出。在示例实现中，第二振荡器是环形振荡器。

22. 发明授权

US08389868B2 Packaged integrated circuits having inductors and methods to form inductors in packaged integrated circuits 有权
标题翻译：具有电感器的封装集成电路和在封装集成电路中形成电感器的方法
公开(公告)号：US08389868B2
公开(公告)日：2013-03-05
申请号：US11967879
申请日：2007-12-31
申请人： Dirk Leipold , Chih-Ming Hung , David W. Evans
发明人： Dirk Leipold , Chih-Ming Hung , David W. Evans
IPC分类号： H05K1/16
CPC分类号： H01L23/645 , H01L24/28 , H01L24/45 , H01L24/48 , H01L24/49 , H01L24/73 , H01L2224/05554 , H01L2224/2919 , H01L2224/32225 , H01L2224/45015 , H01L2224/45124 , H01L2224/45144 , H01L2224/45147 , H01L2224/48091 , H01L2224/4813 , H01L2224/48227 , H01L2224/48472 , H01L2224/48599 , H01L2224/48699 , H01L2224/4911 , H01L2224/49111 , H01L2224/49171 , H01L2224/49175 , H01L2224/73265 , H01L2224/92247 , H01L2924/00014 , H01L2924/01005 , H01L2924/01006 , H01L2924/01013 , H01L2924/01029 , H01L2924/01033 , H01L2924/01079 , H01L2924/014 , H01L2924/14 , H01L2924/15311 , H01L2924/181 , H01L2924/19041 , H01L2924/19042 , H01L2924/19043 , H01L2924/19104 , H01L2924/19107 , H01L2924/20752 , H01L2924/30107 , H01L2924/3011 , H01L2924/30111 , Y10T29/49002 , H01L2924/0665 , H01L2924/00 , H01L2924/00012 , H01L2224/85399 , H01L2224/05599
摘要： Packaged integrated circuits having inductors and methods to form inductors in packaged integrated circuits are disclosed. An example method comprises forming a substrate having a first trace and a contact, attaching an integrated circuit to the substrate over the first trace, and electrically coupling the first trace to the contact via an electrical conductor that extends over the integrated circuit to form the inductor in the packaged integrated circuit.
摘要翻译：公开了具有电感器的封装集成电路和在封装集成电路中形成电感器的方法。一个示例性方法包括形成具有第一迹线和接触的衬底，将集成电路附接到第一迹线上的衬底，以及经由集成电路上延伸的电导体将第一迹线电耦合到接触点以形成电感器在封装集成电路中。

23. 发明授权

US08258774B2 System and method for implementing low-cost electronic gyroscopes and accelerometer 有权
标题翻译：实现低成本电子陀螺仪和加速度计的系统和方法
公开(公告)号：US08258774B2
公开(公告)日：2012-09-04
申请号：US12613049
申请日：2009-11-05
申请人： Chih-Ming Hung , Marco Corsi
发明人： Chih-Ming Hung , Marco Corsi
IPC分类号： G01R23/12 , G01P15/00
CPC分类号： G01C19/64 , G01R25/00
摘要： Accelerometers have a number of wide-ranging uses, and it is desirable to both increase their accuracy while decreasing size. Here, millimeter or sub-millimeter wavelength accelerometers are provided which has the advantage of having the high accuracy of an optical accelerometer, while being compact. Additionally, because millimeter or sub-millimeter wavelength signals are employed, cumbersome and awkward on-chip optical devices and bulky optical mediums can be avoided.
摘要翻译：加速度计有许多广泛的用途，并且希望在减小尺寸的同时提高精度。这里，提供毫米波或亚毫米波长的加速度计，其具有在紧凑的同时具有光学加速度计的高精度的优点。此外，由于采用了毫米波或亚毫米波长的信号，因此可以避免繁琐笨重的片上光学器件和庞大的光学介质。

24. 发明授权

US08138829B2 Segmented power amplifier with varying segment activation 有权
标题翻译：分段功率放大器，具有不同的段激活
公开(公告)号：US08138829B2
公开(公告)日：2012-03-20
申请号：US12789342
申请日：2010-05-27
申请人： Vijay Kumar Reddy , Srikanth Krishnan , Brian P Ginsburg , Srinath Mathur Ramaswamy , Chih-Ming Hung
发明人： Vijay Kumar Reddy , Srikanth Krishnan , Brian P Ginsburg , Srinath Mathur Ramaswamy , Chih-Ming Hung
IPC分类号： H03F1/14
CPC分类号： H03F3/211 , H03F1/0277 , H03F1/56 , H03F3/193 , H03F3/245 , H03F3/72 , H03F2200/105 , H03F2200/366 , H03F2200/451 , H03F2203/21178 , H03F2203/7215 , H03F2203/7236
摘要： Various apparatuses and methods for varying segment activation in a segmented power amplifier are disclosed herein. For example, some embodiments provide a power amplifier including an input, an output, a plurality of amplifier segments and a controller. The amplifier segments are connected in parallel between the input and the output and are adapted to be activated and inactivated. The power level at the output may be controlled by changing a number of the amplifier segments that are activated concurrently. The controller is connected to the amplifier segments and is adapted to vary which of the amplifier segments are activated to arrive at a selected number of activated amplifier segments.
摘要翻译：本文公开了用于在分段功率放大器中改变段激活的各种装置和方法。例如，一些实施例提供了包括输入，输出，多个放大器段和控制器的功率放大器。放大器段在输入和输出之间并联连接，并适于被激活和失活。可以通过改变同时激活的放大器段的数量来控制输出端的功率电平。控制器连接到放大器段，并且适于改变哪个放大器段被激活以到达选定数量的激活的放大器段。

25. 发明授权

US08044741B2 Systems and methods for reducing flicker noise in an oscillator 有权
标题翻译：用于降低振荡器中闪烁噪声的系统和方法
公开(公告)号：US08044741B2
公开(公告)日：2011-10-25
申请号：US12015940
申请日：2008-01-17
申请人： Nathen Barton , Chih-Ming Hung
发明人： Nathen Barton , Chih-Ming Hung
IPC分类号： H03B5/12
CPC分类号： H03L7/0991 , H03B5/1215 , H03B5/1228 , H03B2200/0088
摘要： Various systems and methods for implementing dynamic logic are disclosed herein. For example, some embodiments of the present invention provide LC tank circuits having an inductance and a capacitance. In addition, the circuits include a flicker noise reducing switch that is operable to selectively incorporate the capacitance such that an output of the circuit operates at a frequency based on a combination of the inductance and the capacitance.
摘要翻译：本文公开了用于实现动态逻辑的各种系统和方法。例如，本发明的一些实施例提供具有电感和电容的LC谐振电路。此外，电路包括闪烁噪声降低开关，其可操作以选择性地并入电容，使得电路的输出以基于电感和电容的组合的频率工作。

26. 发明申请

US20100226056A1 METHODOLOGY TO GUARD ESD PROTECTION CIRCUITS AGAINST PRECHARGE EFFECTS 有权
标题翻译：防止预防效应的ESD保护电路的方法
公开(公告)号：US20100226056A1
公开(公告)日：2010-09-09
申请号：US12783240
申请日：2010-05-19
申请人： Chih-Ming Hung , Charvaka Duvvury
发明人： Chih-Ming Hung , Charvaka Duvvury
IPC分类号： H02H9/04
CPC分类号： H02H9/046
摘要： An ESD protection circuit (710) is guarded by a parallel first precharge elimination circuit (720) relative to an I/O pad (721) and a parallel second precharge elimination circuit (730) relative to a VDD pad (731). The precharge elimination circuits are synchronized with the ESD protection circuit to eliminate any precharge voltage to ground before an ESD pulse affects the I/O pad or VDD pad. A diode (722) is connected between I/O pad and VDD. Circuit (720) is between I/O pad and ground (740) and is powered by the same VDD. Circuit (720) includes a first resistor (723), a first nMOS transistor (724), and a first RC timer including a second resistor (725) and a first capacitor (726). Circuit (730) includes a third resistor (733), a second nMOS transistor (734), and a second RC timer including a fourth resistor (735) and a second capacitor (736).
摘要翻译： ESD保护电路（710）相对于VDD焊盘（731）相对于I / O焊盘（721）和并行的第二预充电消除电路（730）由并行的第一预充电消除电路（720）保护。预充电消除电路与ESD保护电路同步，以在ESD脉冲影响I / O焊盘或VDD焊盘之前消除任何对地的预充电电压。二极管（722）连接在I / O焊盘和VDD之间。电路（720）位于I / O焊盘和接地（740）之间，由相同的VDD供电。电路（720）包括第一电阻器（723），第一nMOS晶体管（724）和包括第二电阻器（725）和第一电容器（726）的第一RC定时器。电路（730）包括第三电阻器（733），第二nMOS晶体管（734）和包括第四电阻器（735）和第二电容器（736）的第二RC定时器。

27. 发明授权

US07583156B2 Oscillator with multi-tap inductor, capacitors, and negative-Gm stages 有权
标题翻译：具有多抽头电感，电容和负Gm级的振荡器
公开(公告)号：US07583156B2
公开(公告)日：2009-09-01
申请号：US11801716
申请日：2007-05-10
申请人： Chih-Ming Hung , Nathen Barton
发明人： Chih-Ming Hung , Nathen Barton
IPC分类号： H03B5/08
CPC分类号： G06F17/5063 , H03B5/1215 , H03B5/1225 , H03B5/1228 , H03B5/1231 , H03B5/124 , H03B5/1265 , H03B5/1268 , H03B5/1296 , H03B2201/0216
摘要： System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. An electronic communications device includes a controller to regulate the operation of the electronic communications device, a modem coupled to the controller, a radio frequency unit coupled to the controller and to the modem, an oscillator coupled to the controller and to the radio frequency unit, and an amplifier coupled to the radio frequency unit. The oscillator produces a timing and reference signal for the radio frequency unit based on control information from the controller. The oscillator includes a multi-tap inductor that may controllably alter its effective inductance to change the timing and reference signal provided to the radio frequency unit.
摘要翻译：用于增加RF /微波LC振荡器的频率调谐范围的系统和方法。电子通信设备包括：控制器，用于调节电子通信设备的操作;耦合到控制器的调制解调器，耦合到控制器和调制解调器的射频单元，耦合到控制器和射频单元的振荡器，以及耦合到射频单元的放大器。振荡器基于来自控制器的控制信息产生用于射频单元的定时和参考信号。振荡器包括可以可控地改变其有效电感以改变提供给射频单元的定时和参考信号的多抽头电感器。

28. 发明申请

US20090168387A1 Packaged Integrated Circuits Having Inductors and Methods to Form Inductors in Packaged Integrated Circuits 有权
标题翻译：具有电感器和在封装集成电路中形成电感器的方法的封装集成电路
公开(公告)号：US20090168387A1
公开(公告)日：2009-07-02
申请号：US11967879
申请日：2007-12-31
申请人： Dirk Leipold , Chih-Ming Hung , David W. Evans
发明人： Dirk Leipold , Chih-Ming Hung , David W. Evans
IPC分类号： H05K7/02 , H05K13/00
CPC分类号： H01L23/645 , H01L24/28 , H01L24/45 , H01L24/48 , H01L24/49 , H01L24/73 , H01L2224/05554 , H01L2224/2919 , H01L2224/32225 , H01L2224/45015 , H01L2224/45124 , H01L2224/45144 , H01L2224/45147 , H01L2224/48091 , H01L2224/4813 , H01L2224/48227 , H01L2224/48472 , H01L2224/48599 , H01L2224/48699 , H01L2224/4911 , H01L2224/49111 , H01L2224/49171 , H01L2224/49175 , H01L2224/73265 , H01L2224/92247 , H01L2924/00014 , H01L2924/01005 , H01L2924/01006 , H01L2924/01013 , H01L2924/01029 , H01L2924/01033 , H01L2924/01079 , H01L2924/014 , H01L2924/14 , H01L2924/15311 , H01L2924/181 , H01L2924/19041 , H01L2924/19042 , H01L2924/19043 , H01L2924/19104 , H01L2924/19107 , H01L2924/20752 , H01L2924/30107 , H01L2924/3011 , H01L2924/30111 , Y10T29/49002 , H01L2924/0665 , H01L2924/00 , H01L2924/00012 , H01L2224/85399 , H01L2224/05599
摘要： Packaged integrated circuits having inductors and methods to form inductors in packaged integrated circuits are disclosed. An example method comprises forming a substrate having a first trace and a contact, attaching an integrated circuit to the substrate over the first trace, and electrically coupling the first trace to the contact via an electrical conductor that extends over the integrated circuit to form the inductor in the packaged integrated circuit.
摘要翻译：公开了具有电感器的封装集成电路和在封装集成电路中形成电感器的方法。一个示例性方法包括形成具有第一迹线和接触的衬底，将集成电路附接到第一迹线上的衬底，以及经由集成电路上延伸的电导体将第一迹线电耦合到接触点以形成电感器在封装集成电路中。

29. 发明授权

US07463869B2 Low noise high isolation transmit buffer gain control mechanism 有权
标题翻译：低噪声高隔离传输缓冲器增益控制机制
公开(公告)号：US07463869B2
公开(公告)日：2008-12-09
申请号：US11115815
申请日：2005-04-26
申请人： Chih-Ming Hung , Francis P. Cruise , Dirk Leipold , Robert B. Staszewski
发明人： Chih-Ming Hung , Francis P. Cruise , Dirk Leipold , Robert B. Staszewski
IPC分类号： H04B1/04
CPC分类号： H04B1/0483 , H03F1/3241 , H03F1/3294 , H03F3/191 , H03F2200/331
摘要： A novel apparatus for a low noise, high isolation, all digital transmit buffer gain control mechanism. The gain control scheme is presented in the context of an all digital direct digital-to-RF amplitude converter (DRAC), which efficiently combines the traditional transmit chain functions of upconversion, I and Q combining, D/A conversion, filtering, buffering and RF output amplitude control into a single circuit. The transmit buffer is constructed as an array of NMOS switches. The control logic for each NMOS switch comprises a pass-gate type AND gate whose inputs are the phase modulated output of an all digital PLL and the amplitude control word from a digital control block. Power control is accomplished by recognizing the impairments suffered by a pseudo class E pre-power amplifier (PPA) when implemented in a CMOS process. Firstly, the NMOS switches of the array have significant on resistance and thus can only draw a limited current from the an RF choke when the input waveform is high. The significant on resistance of the NMOS switches is exploited in the DRAC circuit to introduce power control of the transmitted waveform and permits a fully digital method of controlling the RF output power.
摘要翻译：一种低噪声，高隔离，全数字发送缓冲增益控制机制的新型设备。增益控制方案在全数字直接数/频幅度转换器（DRAC）的上下文中呈现，该转换器有效地结合了上变频，I和Q组合，D / A转换，滤波，缓冲和 RF输出幅度控制成单个电路。发送缓冲器构造为NMOS开关阵列。每个NMOS开关的控制逻辑包括一个通门型AND门，其输入是全数字PLL的相位调制输出和来自数字控制块的幅度控制字。通过在CMOS工艺中实现时，通过识别伪E类预功率放大器（PPA）所遭受的损伤来实现功率控制。首先，阵列的NMOS开关具有大的导通电阻，因此当输入波形为高时，只能从RF扼流圈画出有限的电流。在DRAC电路中利用NMOS开关的重要导通电阻来引入发射波形的功率控制，并允许控制RF输出功率的全数字方法。

30. 发明授权

US07327035B2 System and method for providing a low frequency filter pole 有权
标题翻译：提供低频滤波极的系统和方法
公开(公告)号：US07327035B2
公开(公告)日：2008-02-05
申请号：US10936407
申请日：2004-09-08
申请人： Nathen Wainwright Barton , Chih-Ming Hung
发明人： Nathen Wainwright Barton , Chih-Ming Hung
IPC分类号： H01L23/48 , H03H7/00
CPC分类号： H03H7/0115 , H01L2224/48091 , H01L2224/49113 , H01L2924/30107 , H01L2924/3011 , H03H2001/0014 , Y10S257/924 , H01L2924/00014 , H01L2924/00
摘要： Systems are provided for producing a low frequency filter pole. A first bond pad is coupled to a power source. A second bond pad is inductively connected to the first bond pad by a first bond wire. A capacitor is connected to the second bond pad. A third bond pad is inductively connected to the second bond pad by a second bond wire. The second bond wire, in conjunction with the capacitor, forms a low frequency filter pole to mitigate noise in a regulated signal provided at the third bond pad.
摘要翻译：提供用于产生低频滤波器极的系统。第一接合焊盘耦合到电源。第二接合焊盘通过第一接合线电感地连接到第一接合焊盘。电容器连接到第二接合焊盘。第三接合焊盘通过第二接合线电感地连接到第二接合焊盘。第二接合线与电容器一起形成低频滤波器极，以减轻在第三接合焊盘处提供的调节信号中的噪声。

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