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1. 发明申请

US20120007651A1 SYSTEM AND METHOD FOR SIGNAL MIXING BASED ON HIGH ORDER HARMONICS 有权
标题翻译：基于高阶谐波信号混合的系统与方法
公开(公告)号：US20120007651A1
公开(公告)日：2012-01-12
申请号：US12873323
申请日：2010-09-01
申请人： Hao Meng , Peiqi Xuan
发明人： Hao Meng , Peiqi Xuan
IPC分类号： G06F7/44
CPC分类号： G06F1/06 , H03K23/50
摘要： A system and method for signal mixing using high-order harmonics of a local oscillation (LO) signal. In a radio frequency (RF) system, the input RF signal is converted to a lower frequency signal such as an intermediate frequency (IF) signal or a baseband signal for further processing. A voltage controlled oscillator (VCO) is often used to generate a VCO signal which is then divided down to provide the needed LO signals for down conversion. The present invention discloses a system and method for generating a composite harmonic signal based on a linear combination of divided down LO signals with specific phase shifts. Consequently a VCO signal with lower frequency can be used to conserve power. The composite harmonic signal is mixed with the input RF signal to generate a series of mixed signal including one associated with a high-order harmonic of the divided down LO signal. Systems to implement the high order harmonic mixing is also disclosed which comprises a plurality of mixer sections with configurable weighting factors. A combination circuit is used to combine the weighted mixed signals which contains a term corresponding the mixing of the input RF signal with a high order LO harmonic.
摘要翻译：一种使用本地振荡（LO）信号的高次谐波进行信号混合的系统和方法。在射频（RF）系统中，输入RF信号被转换为诸如中频（IF）信号或基带信号的较低频率信号，用于进一步处理。压控振荡器（VCO）通常用于产生VCO信号，然后将其分频以提供所需的LO信号用于下变频。本发明公开了一种基于具有特定相移的分频LO信号的线性组合来生成复合谐波信号的系统和方法。因此，可以使用具有较低频率的VCO信号来节省功率。复合谐波信号与输入RF信号混合，以产生一系列混合信号，包括与分频LO信号的高次谐波相关的混合信号。还公开了实现高阶谐波混合的系统，其包括具有可配置加权因子的多个混频器部分。组合电路用于组合加权混合信号，该混合信号包含对应于输入RF信号的混合的项与高阶LO谐波。

2. 发明申请

US20110316654A1 SYSTEM AND METHOD FOR TUNING-CAPACITOR-ARRAY SHARING 有权
标题翻译：用于调谐电容阵列共享的系统和方法
公开(公告)号：US20110316654A1
公开(公告)日：2011-12-29
申请号：US12822182
申请日：2010-06-24
申请人： Hao Meng , Peiqi Xuan
发明人： Hao Meng , Peiqi Xuan
IPC分类号： H03J5/24
CPC分类号： H03J5/244 , H03J2200/10
摘要： A system and method for sharing a switched capacitor array (SCA) by two tuning circuits are disclosed. In a multiple-band radio receiver, there is a need to use multiple tuning circuits for signals in different bands. The tuning circuit typically comprised an adjustable capacitance device and other tuning components, where the adjustable capacitance device is often implemented in SCA. The present invention discloses a system and method comprising n sections of capacitor elements where each capacitor element comprises a capacitor and switches to selectively connect the capacitor to one of the tuning circuit. Consequently, the SCA can be shared by the two tuning circuits. The control bits for the switched may be provided from a programmable control register.
摘要翻译：公开了一种通过两个调谐电路共享开关电容阵列（SCA）的系统和方法。在多频带无线电接收机中，需要对不同频段的信号使用多个调谐电路。调谐电路通常包括可调电容器件和其他调谐组件，其中可调电容器件通常在SCA中实现。本发明公开了一种包括电容器元件的n个部分的系统和方法，其中每个电容器元件包括一个电容器，并且开关将该电容器选择性地连接到一个调谐电路。因此，SCA可以由两个调谐电路共享。可以从可编程控制寄存器提供用于切换的控制位。

3. 发明授权

US08212602B2 System and method for signal mixing based on high order harmonics 有权
标题翻译：基于高次谐波信号混合的系统和方法
公开(公告)号：US08212602B2
公开(公告)日：2012-07-03
申请号：US12873323
申请日：2010-09-01
申请人： Hao Meng , Peiqi Xuan
发明人： Hao Meng , Peiqi Xuan
IPC分类号： G06G7/12
CPC分类号： G06F1/06 , H03K23/50
摘要： A system and method for signal mixing using high-order harmonics of a local oscillation (LO) signal. In a radio frequency (RF) system, the input RF signal is converted to a lower frequency signal such as an intermediate frequency (IF) signal or a baseband signal for further processing. A voltage controlled oscillator (VCO) is often used to generate a VCO signal which is then divided down to provide the needed LO signals for down conversion. The present invention discloses a system and method for generating a composite harmonic signal based on a linear combination of divided down LO signals with specific phase shifts. Consequently a VCO signal with lower frequency can be used to conserve power. The composite harmonic signal is mixed with the input RF signal to generate a series of mixed signal including one associated with a high-order harmonic of the divided down LO signal. Systems to implement the high order harmonic mixing is also disclosed which comprises a plurality of mixer sections with configurable weighting factors. A combination circuit is used to combine the weighted mixed signals which contains a term corresponding the mixing of the input RF signal with a high order LO harmonic.
摘要翻译：一种使用本地振荡（LO）信号的高次谐波进行信号混合的系统和方法。在射频（RF）系统中，输入RF信号被转换为诸如中频（IF）信号或基带信号的较低频率信号，用于进一步处理。压控振荡器（VCO）通常用于产生VCO信号，然后将其分频以提供所需的LO信号用于下变频。本发明公开了一种基于具有特定相移的分频LO信号的线性组合来生成复合谐波信号的系统和方法。因此，可以使用具有较低频率的VCO信号来节省功率。复合谐波信号与输入RF信号混合，以产生一系列混合信号，包括与分频LO信号的高次谐波相关的混合信号。还公开了实现高阶谐波混合的系统，其包括具有可配置加权因子的多个混频器部分。组合电路用于组合加权混合信号，该混合信号包含对应于输入RF信号的混合的项与高阶LO谐波。

4. 发明申请

US20120007638A1 SYSTEM AND METHOD FOR MULTIPLE-PHASE CLOCK GENERATION 有权
标题翻译：多相时钟生成系统与方法
公开(公告)号：US20120007638A1
公开(公告)日：2012-01-12
申请号：US12872371
申请日：2010-08-31
申请人： Hao Meng , Peiqi Xuan
发明人： Hao Meng , Peiqi Xuan
IPC分类号： H03K23/00
CPC分类号： G06F1/06 , H03K23/50
摘要： A system and method of clock generation to provide divided-by-2 clocks with prescribed phase shifts are disclosed. In a communication system with high-order harmonic mixing, the system requires LO signals with a set of prescribed phase shifts, such as 0°, 45°, 90°, and 135°, or 0°, 60° and 120°. Often, the clock generation system involves a divide-by-2 divider to derive the clock signals with the prescribed phase shifts. In a conventional implementation of the divide-by-2 divider, the system is subject to phase uncertainty in the output signal. Accordingly, a system comprises multiple latch pairs and respective differential clocks are used to generate the clocks with the set of correct prescribed phase shifts.
摘要翻译：公开了一种提供具有规定相移的二分之一秒钟的时钟产生系统和方法。在具有高次谐波混合的通信系统中，系统需要具有一定规定相移的LO信号，例如0°，45°，90°和135°，或0°，60°和120°。通常，时钟发生系统涉及一个除以2的分频器，以规定的相移导出时钟信号。在2分频器的传统实现中，系统在输出信号中受到相位不确定性的影响。因此，系统包括多个锁存器对，并且使用相应的差分时钟来产生具有正确规定相移集合的时钟。

5. 发明授权

US08237485B2 System and method for multiple-phase clock generation 有权
标题翻译：用于多相时钟生成的系统和方法
公开(公告)号：US08237485B2
公开(公告)日：2012-08-07
申请号：US12872371
申请日：2010-08-31
申请人： Hao Meng , Peiqi Xuan
发明人： Hao Meng , Peiqi Xuan
IPC分类号： G06F1/04
CPC分类号： G06F1/06 , H03K23/50
摘要： A system and method of clock generation to provide divided-by-2 clocks with prescribed phase shifts are disclosed. In a communication system with high-order harmonic mixing, the system requires LO signals with a set of prescribed phase shifts, such as 0°, 45°, 90°, and 135°, or 0°, 60° and 120°. Often, the clock generation system involves a divide-by-2 divider to derive the clock signals with the prescribed phase shifts. In a conventional implementation of the divide-by-2 divider, the system is subject to phase uncertainty in the output signal. Accordingly, a system comprises multiple latch pairs and respective differential clocks are used to generate the clocks with the set of correct prescribed phase shifts.
摘要翻译：公开了一种提供具有规定相移的二分之一秒钟的时钟产生系统和方法。在具有高次谐波混合的通信系统中，系统需要具有一定规定相移的LO信号，例如0°，45°，90°和135°，或0°，60°和120°。通常，时钟发生系统涉及一个除以2的分频器，以规定的相移导出时钟信号。在2分频器的传统实现中，系统在输出信号中受到相位不确定性的影响。因此，系统包括多个锁存器对，并且使用相应的差分时钟来产生具有正确规定相移集合的时钟。

6. 发明授权

US08213890B2 System and method for tuning-capacitor-array sharing 有权
标题翻译：调谐电容阵列共享的系统和方法
公开(公告)号：US08213890B2
公开(公告)日：2012-07-03
申请号：US12822182
申请日：2010-06-24
申请人： Hao Meng , Peiqi Xuan
发明人： Hao Meng , Peiqi Xuan
IPC分类号： H04B1/18
CPC分类号： H03J5/244 , H03J2200/10
摘要： A system and method for sharing a switched capacitor array (SCA) by two tuning circuits are disclosed. In a multiple-band radio receiver, there is a need to use multiple tuning circuits for signals in different bands. The tuning circuit typically comprised an adjustable capacitance device and other tuning components, where the adjustable capacitance device is often implemented in SCA. The present invention discloses a system and method comprising n sections of capacitor elements where each capacitor element comprises a capacitor and switches to selectively connect the capacitor to one of the tuning circuit. Consequently, the SCA can be shared by the two tuning circuits. The control bits for the switched may be provided from a programmable control register.
摘要翻译：公开了一种通过两个调谐电路共享开关电容阵列（SCA）的系统和方法。在多频带无线电接收机中，需要对不同频段的信号使用多个调谐电路。调谐电路通常包括可调电容器件和其他调谐组件，其中可调电容器件通常在SCA中实现。本发明公开了一种包括电容器元件的n个部分的系统和方法，其中每个电容器元件包括一个电容器，并且开关将该电容器选择性地连接到一个调谐电路。因此，SCA可以由两个调谐电路共享。可以从可编程控制寄存器提供用于切换的控制位。

7. 发明申请

US20080001136A1 Electrically Writeable and Erasable Memory Medium 有权
标题翻译：电可写和可擦除存储介质
公开(公告)号：US20080001136A1
公开(公告)日：2008-01-03
申请号：US10589915
申请日：2005-01-27
申请人： Tow Chong , Lu Shi , Rong Zhao , Xiang Miao , Pik Tan , Hao Meng , Kai Yi , Xiang Hu , Ke Li , Ping Luo
发明人： Tow Chong , Lu Shi , Rong Zhao , Xiang Miao , Pik Tan , Hao Meng , Kai Yi , Xiang Hu , Ke Li , Ping Luo
IPC分类号： H01L47/00 , H01L21/06
CPC分类号： H01L45/144 , G11C11/161 , H01L45/06 , H01L45/1233 , H01L45/126
摘要： A memory cell for an electrically writeable and erasable memory medium as well as a memory medium thereof is provided. The memory cell comprises a data recording element, the data recording element has a plurality of multiple-layer structure disposed one on top of another, each the multiple-layer structure comprising a plurality of sequentially disposed individual layers. At least one of the plurality of individual layers is capable of changing phase between a crystalline state and an amorphous state in response to an electrical pulse, one of the plurality of individual layers having at least one atomic element which is absent from other one of the plurality of individual layers, and the plurality of multiple-layer structure is of a superlattice-like structure to lower a heat diffusion out of the data recording element to shorten a phase change time of the respective individual layers.
摘要翻译：提供了一种用于电可写和可擦除存储介质及其存储介质的存储单元。存储单元包括数据记录元件，数据记录元件具有多个多层结构，其一个在另一个顶上设置，每个多层结构包括多个顺序排列的各个层。多个单独层中的至少一个能够响应于电脉冲改变结晶状态和非晶状态之间的相位，所述多个单独层中的一个具有至少一个原子元素，其不存在于多个单独的层，并且多个多层结构是超晶格结构，以将数据记录元件的热扩散降低以缩短各个层的相变时间。

8. 发明授权

US09866235B2 Digital to analog converter 有权
公开(公告)号：US09866235B2
公开(公告)日：2018-01-09
申请号：US14482734
申请日：2014-05-06
申请人： TEXAS INSTRUMENTS INCORPORATED , Zhang Jun , Zhang Zefei , Su Anzhe , Hao Meng , Xianguang Wen , Xuan Wang
发明人： Zhang Jun , Zhang ZeFei , Su Anzhe , Hao Meng , Xianguang Wen , Xuan Wang
IPC分类号： H03M1/66 , H03M1/68 , H03M1/76
CPC分类号： H03M1/68 , H03M1/76 , H03M1/808
摘要： Digital to analog converters have first and second to analog arrays. The first digital to analog array has a reference input, a reference output, a first digital input that is connectable to a digital signal, and an analog output. The second digital to analog array includes a reference input, a reference output that is coupled to the reference input of the first digital to analog array, a plurality of switches coupled to the reference input, and a plurality of resistors coupled between the switches and the reference output.

9. 发明授权

US08675319B2 Data reader with heusler alloy reference lamination 有权
标题翻译：数据读取器与heusler合金参考层压
公开(公告)号：US08675319B2
公开(公告)日：2014-03-18
申请号：US13556983
申请日：2012-07-24
申请人： Qing He , Konstantin Nikolaev , Hao Meng , Yonghua Chen , Juren Ding
发明人： Qing He , Konstantin Nikolaev , Hao Meng , Yonghua Chen , Juren Ding
IPC分类号： G11B5/39
CPC分类号： G11B5/3983 , B82Y25/00 , G01R33/093 , G11B5/3906 , G11B5/398 , H01L43/10
摘要： In some embodiments, a current perpendicular to the plane giant magneto-resistance (CPP GMR) read sensor may include a reference layer and/or a free layer that includes a plurality of sub-layers. For example, at least one of the reference layer or free layer may include a first ferromagnetic sub-layer, a second ferromagnetic sub-layer, and a Heusler alloy layer located between the first ferromagnetic sub-layer and the second ferromagnetic sub-layer. In some embodiments, a CPP GMR read sensor may include a current closed path (CCP) spacer layer between the reference layer and the free layer. The CCP spacer layer may include Ag and Al2O3. In further embodiments, a CPP GMR read sensor may include a Heusler alloy free layer, a Heusler alloy reference layer, and a CCP spacer layer.
摘要翻译：在一些实施例中，垂直于平面巨磁阻（CPP GMR）读取传感器的电流可以包括参考层和/或包括多个子层的自由层。例如，参考层或自由层中的至少一个可以包括位于第一铁磁子层和第二铁磁子层之间的第一铁磁子层，第二铁磁子层和Heusler合金层。在一些实施例中，CPP GMR读取传感器可以包括参考层和自由层之间的当前封闭路径（CCP）间隔层。 CCP间隔层可以包括Ag和Al 2 O 3。在另外的实施例中，CPP GMR读取传感器可以包括Heusler合金自由层，Heusler合金参考层和CCP间隔层。

10. 发明申请

US20120306034A1 Magnetoresistive Device 有权
标题翻译：磁阻器件
公开(公告)号：US20120306034A1
公开(公告)日：2012-12-06
申请号：US13487423
申请日：2012-06-04
申请人： Hao Meng , Rachid Sbiaa
发明人： Hao Meng , Rachid Sbiaa
IPC分类号： H01L29/82
CPC分类号： H01L43/08
摘要： A magnetoresistive device having a magnetic junction including a first fixed magnetic layer structure, a second fixed magnetic layer structure, and a free magnetic layer structure, wherein the first second and free magnetic layer structures are arranged one over the other. The first second and free magnetic layer structures have respective magnetization orientations configured to orient in a direction at least substantially perpendicular to a plane defined by an interface between the free magnetic layer structure and either one of the first fixed magnetic layer structure or the second fixed magnetic layer structure. The respective magnetization orientations of the first and the second fixed magnetic layer structures are oriented anti-parallel to each other, and the first fixed magnetic layer structure is a static fixed magnetic layer structure having a switching field that is larger than a switching field of the free magnetic layer structure.
摘要翻译：一种具有包括第一固定磁性层结构，第二固定磁性层结构和自由磁性层结构的磁结的磁阻器件，其中所述第一和第二自由磁性层结构彼此排列。第一第二和自由磁性层结构具有各自的磁化取向，其被配置为在至少基本上垂直于由自由磁性层结构和第一固定磁性层结构或第二固定磁体中的任一个之间的界面限定的平面的方向层结构。第一固定磁性层结构和第二固定磁性层结构的各自的磁化取向彼此反平行取向，并且第一固定磁性层结构是具有大于开关场的开关场的静态固定磁性层结构自由磁层结构。

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