专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20070202830A1 SPURIOUS TONE SUPPRESSOR AND METHOD OF OPERATION THEREOF 审中-公开
标题翻译： SPURIOUS TONE抑制器及其操作方法
公开(公告)号：US20070202830A1
公开(公告)日：2007-08-30
申请号：US11679119
申请日：2007-02-26
申请人： Khurram Muhammad , Chih-Ming Hung
发明人： Khurram Muhammad , Chih-Ming Hung
IPC分类号： H04B1/10
CPC分类号： H04B1/123 , H04B15/005
摘要： The present invention provides a spurious tone suppressor for use with a power supply system. In one embodiment, the spurious tone suppressor includes an error signal generator configured to provide a spur error signal proportional to a spur signal associated with the power supply system. Additionally, the spurious tone suppressor also includes an adaptive spur cancellation engine coupled to the error signal generator and configured to adaptively process the spur error signal and generate a corresponding anti-spur signal that is injected into the power supply system to suppress the spur signal.
摘要翻译：本发明提供一种与电源系统一起使用的杂音抑制器。在一个实施例中，伪噪声抑制器包括误差信号发生器，其被配置为提供与与电源系统相关联的杂散信号成比例的杂散误差信号。另外，伪噪声抑制器还包括耦合到误差信号发生器的自适应杂散消除引擎，并且被配置为自适应地处理杂散误差信号并产生注入到电源系统中以抑制杂散信号的相应的反辅助信号。

12. 发明申请

US20060050452A1 ESD protection for RF power amplifier circuits 有权
标题翻译： RF功率放大器电路的ESD保护
公开(公告)号：US20060050452A1
公开(公告)日：2006-03-09
申请号：US10936308
申请日：2004-09-08
申请人： Ismail Oguzman , Charvaka Duvvury , Chih-Ming Hung
发明人： Ismail Oguzman , Charvaka Duvvury , Chih-Ming Hung
IPC分类号： H02H9/00
CPC分类号： H01L27/0251 , H03F1/52 , H03F2200/294 , H03F2200/372
摘要： An electrostatic discharge (ESD) device for protecting a power amplifier circuit is disclosed. The ESD device comprises a first ESD protection circuit coupled between a positive terminal of a supply voltage and a negative terminal of the supply voltage, and a second ESD protection circuit coupled between the negative terminal of the supply voltage and an output terminal of the power amplifier circuit, wherein a first current path is formed from the positive terminal to the output terminal through the first and second ESD protection circuits. A circuit device operative to increase impedance of a second current path from the positive terminal to the output terminal through the power amplifier circuit to divert current from the second current path to the first current path in the course of an ESD event.
摘要翻译：公开了一种用于保护功率放大器电路的静电放电（ESD）装置。 ESD器件包括耦合在电源电压的正极端子和电源电压的负极端子之间的第一ESD保护电路和耦合在电源电压的负极端子和功率放大器的输出端子之间的第二ESD保护电路电路，其中通过所述第一和第二ESD保护电路从所述正极端子到所述输出端子形成第一电流路径。电路装置，其可操作以通过功率放大器电路增加从正端子到输出端子的第二电流路径的阻抗，以在ESD事件的过程中将电流从第二电流路径转移到第一电流路径。

13. 发明申请

US20060038624A1 Oscillator system, method of providing a resonating signal and a communications system employing the same 有权
标题翻译：振荡器系统，提供谐振信号的方法和采用该谐振信号的通信系统
公开(公告)号：US20060038624A1
公开(公告)日：2006-02-23
申请号：US10924220
申请日：2004-08-23
申请人： Chih-Ming Hung , Robert Staszewski , Dirk Leipol
发明人： Chih-Ming Hung , Robert Staszewski , Dirk Leipol
IPC分类号： H03B5/12 , H03K3/282
CPC分类号： H03B5/08
摘要： An nth-order oscillator system for providing a resonating signal, a method of generating a resonating signal and a communications system. In one embodiment, the nth-order oscillator system, n being greater than two, includes (1) an amplifier configured to provide an intermediate signal and (2) a feedback loop including an nth-order complex LC tank and configured to generate the resonating signal by feeding back a complex-filtered form of the intermediate signal to the amplifier.
摘要翻译：一种用于提供谐振信号的第n / O级振荡器系统，产生谐振信号的方法和通信系统。在一个实施例中，n大于2的n阶振荡器系统包括（1）被配置为提供中间信号的放大器和（2）包括n + 并且被配置为通过将中间信号的复数滤波形式反馈到放大器来产生谐振信号。

14. 发明授权

US06734741B2 Frequency synthesizer with digitally-controlled oscillator 有权
公开(公告)号：US06734741B2
公开(公告)日：2004-05-11
申请号：US10006607
申请日：2001-11-30
申请人： Robert B. Staszewski , Dirk Leipold , Khurram Muhammad , Chih-Ming Hung
发明人： Robert B. Staszewski , Dirk Leipold , Khurram Muhammad , Chih-Ming Hung
IPC分类号： H03L700
CPC分类号： H03C3/0975 , H03C3/0941 , H03C3/095 , H03C3/0958 , H03C3/0966 , H03K19/0016 , H03L7/085 , H03L7/087 , H03L7/091 , H03L7/093 , H03L7/099 , H03L7/16 , H03L2207/50 , H04L7/0029
摘要： A transmitter (10) based on a frequency synthesizer includes an LC tank (12) of a digitally controlled oscillator (DCO) with various arrays of capacitors. The LC tank 12 is divided into two major groups that reflect two general operational modes: acquisition and tracking. The first group (process/voltage/temperature and acquisition) approximately sets the desired center frequency of oscillation initially, while the second group (integer and fractional tracking) precisely controls the oscillating frequency during the actual operation. For highly accurate outputs, dynamic element matching (DEM) is used in the integer tracking controller to reduce non-linearities caused by non-uniform capacitor values. Also, a preferred range of the integer tracking capacitor array may be used for modulation after the selected channel has been acquired. A digital sigma-delta modulator circuit (50) drives a capacitor array (14d) in response to the fractional bits of the error word. On mode switches, the accumulated error is recalculated to a phase restart value to prevent perturbations.

15. 发明申请

US20120306475A1 SYSTEM AND METHOD FOR IMPLEMENTING LOW-COST ELECTRONIC GYROSCOPES AND ACCELEROMETER 审中-公开
标题翻译：用于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：US20120306475A1
公开(公告)日：2012-12-06
申请号：US13566595
申请日：2012-08-03
申请人： Chih-Ming Hung , Marco Corsi
发明人： Chih-Ming Hung , Marco Corsi
IPC分类号： G01R23/12
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。

16. 发明授权

US08217735B2 Harmonic suppression device 有权
标题翻译：谐波抑制装置
公开(公告)号：US08217735B2
公开(公告)日：2012-07-10
申请号：US12603654
申请日：2009-10-22
申请人： Shyue-Dar Chen , Chih-Ming Hung
发明人： Shyue-Dar Chen , Chih-Ming Hung
IPC分类号： H03H7/00 , H03F3/213 , H04B1/04
CPC分类号： H01P1/20345 , H03F1/32 , H03F3/60
摘要： A harmonic suppression device includes a multilayer printed circuit board (PCB). The multilayer PCB includes a first layer, a second layer, and a third layer. The third layer is connected to the ground. The first layer is configured with a power amplifier, an input microstrip, a voltage divider microstrip, and an output microstrip. The power amplifier is operable to amplify radio frequency (RF) signals input using the input microstrip and to output the amplified RF signals using the output microstrip. The second layer is configured with a first microstrip and a second microstrip. One end of each of the first and second microstrips is connected to an alternative one of the first layer and the third layer by vias, and the other ends of the first and second microstrips are unattached so as to suppress harmonics on the power amplifier.
摘要翻译：谐波抑制装置包括多层印刷电路板（PCB）。多层PCB包括第一层，第二层和第三层。第三层连接到地面。第一层配置有功率放大器，输入微带线，分压器微带线和输出微带线。功率放大器可用于放大使用输入微带输入的射频（RF）信号，并使用输出微带输出放大的RF信号。第二层配置有第一微带和第二微带。第一和第二微带中的每一个的一端通过通孔连接到第一层和第三层中的另一个，并且第一和第二微带的另一端未连接，以便抑制功率放大器上的谐波。

17. 发明授权

US07949323B1 Local oscillator leakage counterbalancing in a receiver 有权
标题翻译：接收机本地振荡器泄漏平衡
公开(公告)号：US07949323B1
公开(公告)日：2011-05-24
申请号：US11679101
申请日：2007-02-26
申请人： Khurram Muhammad , Chih-Ming Hung , Imtinan Elahi
发明人： Khurram Muhammad , Chih-Ming Hung , Imtinan Elahi
IPC分类号： H04B1/10
CPC分类号： H04B15/06 , H04B1/30
摘要： The present invention provides a local oscillator (LO) leakage controller for use with a receiver. In one embodiment, the LO leakage controller includes a comparison unit configured to process an LO leakage error signal from the receiver to provide a leakage cancellation signal. Additionally, the LO leakage controller also includes a leakage counterbalance unit coupled to the comparison unit and configured to adapt the leakage cancellation signal to the receiver to counterbalance LO leakage in the receiver.
摘要翻译：本发明提供了一种与接收机一起使用的本地振荡器（LO）泄漏控制器。在一个实施例中，LO泄漏控制器包括比较单元，其被配置为处理来自接收器的LO泄漏误差信号以提供泄漏消除信号。此外，LO泄漏控制器还包括耦合到比较单元并被配置为将泄漏抵消信号适配到接收器以抵消接收器中的LO泄漏的泄漏平衡单元。

18. 发明授权

US07863994B2 System and method for increasing radio frequency (RF) microwave inductor-capacitor (LC) oscillator frequency tuning range 有权
标题翻译：提高射频（RF）微波电感 - 电容（LC）振荡器频率调谐范围的系统和方法
公开(公告)号：US07863994B2
公开(公告)日：2011-01-04
申请号：US12018856
申请日：2008-01-24
申请人： Chih-Ming Hung , Dirk Leipold , Nathan Barton
发明人： Chih-Ming Hung , Dirk Leipold , Nathan Barton
IPC分类号： H03B5/08
CPC分类号： H03B5/1296 , H03B5/1209 , H03B5/1256 , H03B5/1287
摘要： System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. A preferred embodiment comprises a voltage controlled oscillator (VCO) configured to generate an output signal at a frequency that is dependent upon a magnitude of an input voltage level and an effective inductance of an inductive load and a variable inductor coupled to the VCO. The variable inductor comprises a primary inductor coupled to the VCO to produce a magnetic field based upon a current flowing through the primary inductor and a secondary inductor magnetically coupled to the primary inductor, the secondary inductor to affect the magnitude of the effective inductance of the primary inductor.
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。优选实施例包括压控振荡器（VCO），其被配置为以取决于输入电压电平的大小和耦合到VCO的电感性负载和可变电感器的有效电感的频率来产生输出信号。可变电感器包括耦合到VCO的初级电感器，以基于流过初级电感器的电流和与主电感器磁耦合的次级电感器产生磁场，次级电感器影响主电感器的有效电感的幅度电感。

19. 发明申请

US20090184771A1 Systems and Methods for Reducing Flicker Noise in an Oscillator 有权
标题翻译：降低振荡器闪烁噪声的系统和方法
公开(公告)号：US20090184771A1
公开(公告)日：2009-07-23
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： H03L7/099 , 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。

20. 发明申请

US20080129390A1 System and Method for Increasing Radio Frequency (RF) Microwave Inductor-Capacitor (LC) Oscillator Frequency Tuning Range 有权
标题翻译：用于增加射频（RF）微波电感电容（LC）振荡器频率调谐范围的系统和方法
公开(公告)号：US20080129390A1
公开(公告)日：2008-06-05
申请号：US12018856
申请日：2008-01-24
申请人： Chih-Ming Hung , Dirk Leipold , Nathan Barton
发明人： Chih-Ming Hung , Dirk Leipold , Nathan Barton
IPC分类号： H03L7/00
CPC分类号： H03B5/1296 , H03B5/1209 , H03B5/1256 , H03B5/1287
摘要： System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. A preferred embodiment comprises a voltage controlled oscillator (VCO) configured to generate an output signal at a frequency that is dependent upon a magnitude of an input voltage level and an effective inductance of an inductive load and a variable inductor coupled to the VCO. The variable inductor comprises a primary inductor coupled to the VCO to produce a magnetic field based upon a current flowing through the primary inductor and a secondary inductor magnetically coupled to the primary inductor, the secondary inductor to affect the magnitude of the effective inductance of the primary inductor.
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。优选实施例包括压控振荡器（VCO），其被配置为以取决于输入电压电平的大小和耦合到VCO的电感性负载和可变电感器的有效电感的频率来产生输出信号。可变电感器包括耦合到VCO的初级电感器，以基于流过初级电感器的电流和与主电感器磁耦合的次级电感器产生磁场，次级电感器影响主电感器的有效电感的幅度电感。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式