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    • 41. 发明申请
    • SPLIT ANALOG/DIGITAL POLYNOMIAL NONLINEAR TERM GENERATOR WITH REDUCED NUMBER OF ANALOG-TO-DIGITAL CONVERTERS
    • 具有减少数字到数字转换器数量的分立模拟/数字多项式非线性发电机
    • US20100176981A1
    • 2010-07-15
    • US12687113
    • 2010-01-13
    • Edward KeehrSeyed Ali Hajimiri
    • Edward KeehrSeyed Ali Hajimiri
    • H03M1/12
    • H04B1/109
    • A polynomial nonlinear term generator is configured to receive an RF signal. An analog cubic term generator generates an analog cubic term signal and an analog square term generator generates an analog square term signal, both derived from the RF signal. A cubic term mixer assembly mixes a local oscillator (LO) signal with the cubic term signal to generate a synthetic IM3 signal. A square term ADC provides a digital square term signal and a cubic term ADC provides a digital cubic term signal. At least one digital multiplier has a first multiplier input terminal configured to receive a selected one of the digital square term signal and the digital cubic term signal, and a second multiplier input terminal configured to receive the digital square term signal. The multiplier provides as output a digital IMn product where n is greater than 3. A corresponding method is also described.
    • 多项式非线性项发生器被配置为接收RF信号。 模拟三次项发生器产生模拟三次项信号,并且模拟平方项发生器产生从RF信号导出的模拟平方项信号。 立体词混合器组件将本地振荡器(LO)信号与三次项信号混合以产生合成的IM3信号。 平方项ADC提供数字平方项信号,三次项ADC提供数字立方项​​信号。 至少一个数字乘法器具有被配置为接收数字平方项信号和数字三次项信号中所选择的一个的第一乘法器输入端子,以及被配置为接收数字平方项信号的第二乘法器输入端子。 乘数提供n大于3的数字IMn乘积作为输出。还描述了相应的方法。
    • 42. 发明申请
    • FULLY INTEGRATED TEMPERATURE REGULATOR FOR BIOCHEMICAL APPLICATIONS
    • 全面综合温度调节器用于生物化学应用
    • US20100163545A1
    • 2010-07-01
    • US12399320
    • 2009-03-06
    • Hua WangSeyed Ali Hajimiri
    • Hua WangSeyed Ali Hajimiri
    • H05B1/02
    • G05D23/24G05D23/1906G05D23/22G05D23/27
    • The invention is an integrated temperature regulator that can be fabricated using conventional semiconductor processing technology. The integrated temperature regulator can include a reaction chamber, for example fabricated from PDMS, in which chemical or biochemical reactions of interest can be carried out. The temperature regular can also be used to regulate the temperature of some circuits, e.g. an effective-inductance-change based magnetic particle sensor, to achieve a stable operation performance, such as an improved sensitivity. The integrated temperature regulator includes as subcomponents a temperature sensing circuit that receives a thermal signal from the vicinity of the reaction chamber, a temperature reference circuit, and a temperature control circuit that controls a heater based at least in part on the difference between the sensed temperature and the reference temperature. The various subcomponents can be programmable.
    • 本发明是可以使用常规半导体处理技术制造的集成温度调节器。 集成温度调节器可以包括例如由PDMS制造的反应室,其中可以进行感兴趣的化学或生物化学反应。 温度常数也可用于调节某些电路的温度,例如 基于有效电感变化的磁性粒子传感器,以实现稳定的操作性能,例如提高的灵敏度。 集成温度调节器包括作为子部件的温度感测电路,其接收来自反应室附近的热信号,温度参考电路和温度控制电路,其至少部分地基于感测温度之间的差异来控制加热器 和参考温度。 各个子部件可以编程。
    • 45. 发明申请
    • EQUALIZATION OF THIRD-ORDER INTERMODULATION PRODUCTS IN WIDEBAND DIRECT CONVERSION RECEIVER
    • 宽带直接转换接收机中第三方互调产品的均衡
    • US20090075612A1
    • 2009-03-19
    • US12233314
    • 2008-09-18
    • Edward KeehrSeyed Ali Hajimiri
    • Edward KeehrSeyed Ali Hajimiri
    • H04B17/00H04B1/10H03B1/00
    • H03D7/14H04B1/123
    • A feedforward error-compensated receiver for minimizing undesired odd-order nonlinear distortion products. The receiver includes a first receiver path configured to receive an input signal. The first receiver path outputs a signal including at least one baseband (BB) frequency. At least one second receiver path is configured to receive the input signal and to provide a second receiver path output signal. The second receiver path includes at least one odd-order nonlinear distortion reference generator. The at least one odd-order nonlinear distortion reference generator and the mixer are configured to generate a synthetic odd-order nonlinear distortion signal. A combining element is configured to receive the output signal from the first path and the output signal from the second receiver path output and to combine the signals such that the odd-order nonlinear distortion signals are substantially attenuated at an output of the combining element.
    • 用于最小化不期望的奇数非线性失真产物的前馈误差补偿接收器。 接收机包括被配置为接收输入信号的第一接收器路径。 第一接收机路径输出包括至少一个基带(BB)频率的信号。 至少一个第二接收机路径被配置为接收输入信号并提供第二接收机路径输出信号。 第二接收器路径包括至少一个奇数阶非线性失真参考发生器。 所述至少一个奇数非线性失真参考发生器和所述混频器被配置为产生合成奇数非线性失真信号。 组合元件被配置为接收来自第一路径的输出信号和来自第二接收机路径输出的输出信号,并且组合信号,使得奇数阶非线性失真信号在组合元件的输出处基本衰减。
    • 46. 发明授权
    • Crosstalk equalizer
    • 串扰均衡器
    • US07505505B2
    • 2009-03-17
    • US11071413
    • 2005-03-02
    • James BuckwalterSeyed Ali Hajimiri
    • James BuckwalterSeyed Ali Hajimiri
    • H04L7/00
    • H04L25/03878H04L7/0087H04L7/033
    • Apparatus and methods for equalizing the jitter on a communication line attributable to uncorrelated data coupled from one or more data lines in close proximity to the communication line. The crosstalk jitter induced by adjacent data lines can be equalized by detecting one or more data or state transitions in the adjacent data lines and comparing the timing of the one or more data or state transitions to the timing of one or more data or state transitions on the communication line. The state transitions can be compared to determine a mode and corresponding level of coupling. A time delay contributed by a variable time delay positioned in series with the communication line can be varied based in part on the level of coupling.
    • 用于均衡通信线路上的抖动的装置和方法,其归因于从紧邻通信线路的一个或多个数据线耦合的不相关数据。 通过检测相邻数据线中的一个或多个数据或状态转换并将一个或多个数据或状态转换的定时与一个或多个数据或状态转换的定时进行比较,相邻数据线引起的串扰抖动可以相等化 通信线路。 可以比较状态转换以确定模式和相应的耦合水平。 部分基于耦合水平可以改变与通信线路串联定位的可变时间延迟所引起的时间延迟。
    • 47. 发明授权
    • Monolithic silicon-based phased arrays for communications and radars
    • 用于通信和雷达的单片硅基相控阵列
    • US07502631B2
    • 2009-03-10
    • US10988199
    • 2004-11-12
    • Hossein HashemiXiang GuanSeyed Ali Hajimiri
    • Hossein HashemiXiang GuanSeyed Ali Hajimiri
    • H04B1/38H04B1/06H04M1/00
    • H01Q3/26H01Q3/22H01Q3/2682H01Q3/42H01Q21/0093
    • A phased-array receiver is adapted so as to be fully integrated and fabricated on a single silicon substrate. The phased-array receiver is operative to receive a 24 GHz signal and may be adapted to include 8-elements formed in a SiGe BiCMOS technology. The phased-array receiver utilizes a heterodyne topology, and the signal combining is performed at an IF of 4.8 GHz. The phase-shifting with 4 bits of resolution is realized at the LO port of the first down-conversion mixer. A ring LC VCO generates 16 different phases of the LO. An integrated 19.2 GHz frequency synthesizer locks the VCO frequency to a 75 MHz external reference. Each signal path achieves a gain of 43 dB, a noise figure of 7.4 dB, and an IIP3 of −11 dBm. The 8-path array achieves an array gain of 61 dB, a peak-to-null ratio of 20 dB, and improves the signal-to-noise ratio at the output by 9 dB.
    • 相控阵接收器适于完全集成并制造在单个硅衬底上。 相控阵接收器可操作以接收24GHz信号,并且可适于包括以SiGe BiCMOS技术形成的8个元件。 相控阵接收机利用外差拓扑,信号组合在4.8GHz的IF下进行。 在第一个下变频混频器的LO端口实现4位分辨率的相移。 振荡LC VCO产生LO的16个不同相位。 集成的19.2 GHz频率合成器将VCO频率锁定到75 MHz外部参考。 每个信号路径的增益为43 dB,噪声系数为7.4 dB,IIP3为-11 dBm。 8路径阵列实现了61 dB的阵列增益,20 dB的峰 - 无效比,并将输出端的信噪比提高了9 dB。
    • 49. 发明授权
    • Travelling wave distributed active antenna radiator structures, high frequency power generation and quasi-optical filtering
    • 行波分布式有源天线散热器结构,高频发电和准光滤波
    • US08830137B2
    • 2014-09-09
    • US13282193
    • 2011-10-26
    • Kaushik SenguptaSeyed Ali Hajimiri
    • Kaushik SenguptaSeyed Ali Hajimiri
    • H01Q7/00
    • H01Q1/2283H01Q9/04H01Q13/10H01Q23/00
    • An integrated distributed active radiator (DAR) device includes first and second conductors disposed adjacent to each other. The conductors define curves which close on themselves to within a distance of a gap. The first conductor first end is electrically coupled to the second conductor second end across the gap. The second conductor first end is electrically coupled to the first conductor second end across the gap. At least one active element is configured to produce a self-oscillation current at a frequency f0. The self-oscillation current has a first direction in the first conductor and a second direction in the second conductor. The DAR device is configured to generate a harmonic current which has the same direction in both conductors. The DAR device is configured to efficiently radiate electromagnetic energy at a harmonic frequency and to substantially inhibit the radiation of electromagnetic energy at the frequency f0.
    • 集成分布式有源辐射器(DAR)装置包括彼此相邻布置的第一和第二导体。 导体定义了在间隙距离内自身闭合的曲线。 第一导体第一端电连接到穿过间隙的第二导体第二端。 第二导体第一端电连接到穿过间隙的第一导体第二端。 至少一个有源元件被配置为以频率f0产生自振荡电流。 自振荡电流在第一导体中具有第一方向,在第二导体中具有第二方向。 DAR器件被配置为产生在两个导体中具有相同方向的谐波电流。 DAR设备被配置为有效地辐射谐波频率的电磁能量并且基本上禁止在频率f0的电磁能量的辐射。
    • 50. 发明授权
    • Integrated 3-dimensional electromagnetic element arrays
    • 集成三维电磁元件阵列
    • US08742989B2
    • 2014-06-03
    • US13118188
    • 2011-05-27
    • Florian BohnSeyed Ali Hajimiri
    • Florian BohnSeyed Ali Hajimiri
    • H01Q1/38
    • H01Q1/2283H01L2224/48091H01Q21/0093H01Q23/00H01L2924/00014
    • Systems and methods for constructing integrated three dimensional electromagnetic element arrays using a bulk resonator are illustrated. In several embodiments, the integrated three dimensional electromagnetic element arrays include electromagnetic elements buried within the bulk resonator. In many embodiments, inclusion of a third dimension in the electromagnetic element array can alleviate or eliminate the trade-offs that are experienced in conventional integrated antennas by using the third physical dimension to provide an additional degree of freedom to manipulate electromagnetic boundary conditions in the near-field of the substrate, affecting both the resulting electromagnetic near- and far-fields. In several embodiments, three dimensional electromagnetic element arrays are formed by mechanically stacking substrates on which integrated planar circuits are formed (i.e. chips) using conventional die stacking techniques.
    • 示出了使用体谐振器构造集成的三维电磁元件阵列的系统和方法。 在几个实施例中,集成的三维电磁元件阵列包括埋入本体谐振器内的电磁元件。 在许多实施例中,在电磁元件阵列中包括第三维度可以通过使用第三物理尺寸来提供额外的自由度来操纵在近端的电磁边界条件,来减轻或消除常规集成天线中经历的权衡 - 基底的场,影响所得到的电磁近场和远场。 在几个实施例中,通过使用常规的芯片堆叠技术机械堆叠形成集成平面电路的基板(即,芯片)来形成三维电磁元件阵列。