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11. 发明申请

US20100134097A1 FREQUENCY-SHIFT CMOS MAGNETIC BIOSENSOR ARRAY WITH SINGLE BEAD SENSITIVITY AND NO EXTERNAL MAGNET 有权
标题翻译：频率移动CMOS磁性生物传感器阵列，具有单根光纤灵敏度，无外部磁铁
公开(公告)号：US20100134097A1
公开(公告)日：2010-06-03
申请号：US12559517
申请日：2009-09-15
申请人： Hua Wang , Seyed Ali Hajimiri
发明人： Hua Wang , Seyed Ali Hajimiri
IPC分类号： G01R33/12
CPC分类号： G01R33/1269
摘要： According to one aspect, an integrated magnetic particle measurement device for detecting a presence or absence of magnetic particles in a sample volume includes at least one sensor cell having a differential sensor pair. An active sensor oscillator frequency is responsive to one or more magnetic particles situated within a sample volume. The sensor cell is configured to be operative in the absence of an externally applied magnetic field. A frequency measurement circuit provides as a time-multiplexed output a first count representative of the active sensor oscillator frequency and a second count representative of the reference sensor oscillator frequency. A calculated difference between the first count and the second count is indicative of a presence or an absence of one or more magnetic particles within the sample volume. An integrated magnetic particle measurement system array and a method for detecting one or more magnetic particles are also described.
摘要翻译：根据一个方面，用于检测样品体积中磁性颗粒存在或不存在的集成磁性颗粒测量装置包括至少一个具有差分传感器对的传感器单元。主动传感器振荡器频率响应于位于样品体积内的一个或多个磁性颗粒。传感器单元被配置为在没有外部施加的磁场的情况下操作。频率测量电路提供代表有源传感器振荡器频率的第一计数的时间复用输出和表示参考传感器振荡器频率的第二计数。第一计数和第二计数之间的计算差异表示样品体积内存在或不存在一个或多个磁性颗粒。还描述了集成磁性粒子测量系统阵列和用于检测一个或多个磁性粒子的方法。

12. 发明申请

US20090075610A1 DIGITAL AND ANALOG IM3 PRODUCT COMPENSATION CIRCUITS FOR AN RF RECEIVER 有权
标题翻译：数字和模拟IM3 RF射频接收机的产品补偿电路
公开(公告)号：US20090075610A1
公开(公告)日：2009-03-19
申请号：US11751363
申请日：2007-05-21
申请人： Edward Keehr , Seyed Ali Hajimiri
发明人： Edward Keehr , Seyed Ali Hajimiri
IPC分类号： H04B17/02
CPC分类号： H04B1/1018
摘要： Third-order intermodulation products (IM3) are attenuated in RF receivers by providing a typical main signal path and a parallel auxiliary signal path in which the IM3 products are accentuated, and the output from the main signal path is adaptively filtered to attenuate the IM3 products. In one embodiment, a multirate filter bank (MRFB) with asymmetric analysis and synthesis sections is used to detect and isolate the IM3 products. In another embodiment an analog nonlinear term generator is placed at the front of the auxiliary signal path. The analog nonlinear term generator takes advantage of the nonlinearities of a differential MOSFET circuit and a multiplier to extract the IM3 products in the RF input signal. The outputs of the main signal path and the auxiliary signal path are inputs to a complex least mean squares filter to attenuate the IM3 products in the resulting signal.
摘要翻译：三阶互调产物（IM3）通过提供典型的主信号路径和并行辅助信号路径在RF接收机中衰减，其中IM3产品被强调，并且来自主信号路径的输出被自适应滤波以衰减IM3产品。在一个实施例中，使用具有不对称分析和合成部分的多速率滤波器组（MRFB）来检测和隔离IM3产品。在另一个实施例中，模拟非线性项发生器被放置在辅助信号路径的前面。模拟非线性项发生器利用差分MOSFET电路和乘法器的非线性来提取RF输入信号中的IM3产品。主信号路径和辅助信号路径的输出是复合最小均方滤波器的输入，以衰减所产生的信号中的IM3乘积。

13. 发明申请

US20090052597A1 SCALABLE RECONFIGURABLE CONCURRENT FILTER FOR WIDE-BANDWIDTH COMMUNICATION 有权
标题翻译：用于宽带通信的可扩展可重新连接的过流滤波器
公开(公告)号：US20090052597A1
公开(公告)日：2009-02-26
申请号：US12022624
申请日：2008-01-30
申请人： Yu-Jiu Wang , Seyed Ali Hajimiri
发明人： Yu-Jiu Wang , Seyed Ali Hajimiri
IPC分类号： H04B1/10
CPC分类号： H03H15/00 , H01F2017/0046 , H03F3/45183 , H03F3/45475 , H03F3/72 , H03F2203/45138 , H03F2203/45506 , H03F2203/7206 , H03H7/18
摘要： The invention relates to a reconfigurable continuous FIR filter. The reconfigurable continuous FIR filter includes a delay line including at least two delay elements coupled in cascade. The reconfigurable continuous FIR filter also includes a filter section including at least three gain-phase elements. The filter section also includes a summing circuit having a plurality of inputs at least equal in number to the at least three gain-phase elements and one output. The reconfigurable continuous FIR filter is configured to exhibit a filter transfer function that is reconfigurable in real time. The invention also related to down-converters using the reconfigurable continuous FIR filter. The invention also related to electromagnetic wave receivers using the reconfigurable continuous FIR filter. The invention also relates to a method for reconfigurable real time continuous filtering.
摘要翻译：本发明涉及可重构的连续FIR滤波器。可重构连续FIR滤波器包括延迟线，包括至少两个级联耦合的延迟元件。可重构连续FIR滤波器还包括包括至少三个增益相位元件的滤波器部分。滤波器部分还包括一个求和电路，该求和电路具有与至少三个增益相位元件至少相等的多个输入和一个输出。可重构连续FIR滤波器被配置为呈现可实时重新配置的滤波器传递函数。本发明还涉及使用可重构连续FIR滤波器的下变换器。本发明还涉及使用可重构连续FIR滤波器的电磁波接收机。本发明还涉及一种用于可重构实时连续滤波的方法。

14. 发明授权

US07330076B2 Reconfigurable distributed active transformers 有权
标题翻译：可重构分布式有源变压器
公开(公告)号：US07330076B2
公开(公告)日：2008-02-12
申请号：US11544895
申请日：2006-10-06
申请人： Abbas Komijani , Seyed-Ali Hajimiri , Scott D. Kee , Ichiro Aoki
发明人： Abbas Komijani , Seyed-Ali Hajimiri , Scott D. Kee , Ichiro Aoki
IPC分类号： H03F3/26
CPC分类号： H03F3/265 , H03F1/223 , H03F3/423 , H03F3/602 , H03F3/604 , H03F2200/372 , H03F2200/421 , H03F2200/534 , H03F2200/537 , H03F2200/541
摘要： Reconfigurable distributed active transformers are provided. The exemplary embodiments provided allow changing of the effective number and configuration of the primary and secondary windings, where the distributed active transformer structures can be reconfigured dynamically to control the output power levels, allow operation at multiple frequency bands, maintain a high performance across multiple channels, and sustain desired characteristics across process, temperature and other environmental variations. Integration of the distributed active transformer power amplifiers and a low noise amplifier on a semiconductor substrate can also be provided.
摘要翻译：提供可重配置的分布式有源变压器。提供的示例性实施例允许改变主和次级绕组的有效数量和配置，其中分布式有源变压器结构可以被动态地重新配置以控制输出功率电平，允许在多个频带上操作，在多个通道上保持高性能并保持过程，温度和其他环境变化的期望特征。还可以提供分布式有源变压器功率放大器和低噪声放大器在半导体衬底上的集成。

15. 发明授权

US07157972B2 Common gate with resistive feed-through low noise amplifier 有权
公开(公告)号：US07157972B2
公开(公告)日：2007-01-02
申请号：US10731832
申请日：2003-12-09
申请人： Seyed-Ali Hajimiri , Xiang Guan
发明人： Seyed-Ali Hajimiri , Xiang Guan
IPC分类号： H03F3/16
CPC分类号： H03F3/193 , H03F2200/294 , H03F2200/372
摘要： A radio-frequency amplifier is provided. The radio-frequency amplifier includes a transistor having an input terminal, an output terminal, a control terminal, and a transconductance gm. A series-connected feed-through resistance Rf and feed-through capacitance Cf is connected in parallel with the input terminal and the output terminal of the transistor. A load resistance RL is connected to the output terminal. The control terminal of the transistor is biased at a fixed voltage. Part of the transistor noise follows the looped path through the feed-through resistor instead of passing on to the load, which reduces the noise figure of the amplifier. The value of gm, Rf and RL are chosen in a way to keep the input impedance of the amplifier matched to a well-defined signal source impedance.

16. 发明申请

US20050275454A1 Cross-differential amplifier 有权
标题翻译：交叉差分放大器
公开(公告)号：US20050275454A1
公开(公告)日：2005-12-15
申请号：US11208833
申请日：2005-08-22
申请人： Seyed-Ali Hajimiri , Scott D. Kee , Ichiro Aoki
发明人： Seyed-Ali Hajimiri , Scott D. Kee , Ichiro Aoki
IPC分类号： H03F3/191 , H03F3/217 , H03F3/68 , H03F3/45
CPC分类号： H03F1/0211 , H03F3/04 , H03F3/191 , H03F3/217 , H03F3/2176 , H03F3/45475 , H03F3/605 , H03F3/68 , H03F2200/507 , H03F2200/537 , H03F2200/541 , H03F2203/45464 , H03F2203/45704 , H03F2203/45731
摘要： A cross-differential amplifier is provided. The cross-differential amplifier includes an inductor connected to a direct current power source at a first terminal. A first and second switch, such as transistors, are connected to the inductor at a second terminal. A first and second amplifier are connected at their supply terminals to the first and second switch. The first and second switches are operated to commutate the inductor between the amplifiers so as to provide an amplified signal while limiting the ripple voltage on the inductor and thus limiting the maximum voltage imposed across the amplifiers and switches.
摘要翻译：提供了一个交叉差分放大器。交叉差分放大器包括在第一端子处连接到直流电源的电感器。诸如晶体管的第一和第二开关在第二端子处连接到电感器。第一和第二放大器在其电源端连接到第一和第二开关。第一和第二开关被操作以在放大器之间换向电感器，以便提供放大的信号，同时限制电感器上的纹波电压，从而限制放大器和开关上施加的最大电压。

17. 发明申请

US20050200420A1 Supply circuit for power amplifier drivers 有权
标题翻译：功率放大器驱动器供电电路
公开(公告)号：US20050200420A1
公开(公告)日：2005-09-15
申请号：US10975161
申请日：2004-10-28
申请人： Scott Kee , Ichiro Aoki , Hui Wu , Seyed-Ali Hajimiri , Frank Carr , Rahul Magoon , Alexandre Kral , Afshin Mellati , Florian Bohn , Donald McClymont
发明人： Scott Kee , Ichiro Aoki , Hui Wu , Seyed-Ali Hajimiri , Frank Carr , Rahul Magoon , Alexandre Kral , Afshin Mellati , Florian Bohn , Donald McClymont
IPC分类号： H03F1/22 , H03F3/26 , H03F3/343 , H03F3/42 , H03F3/45 , H03F3/60 , H03F3/68 , H03L7/00
CPC分类号： H03F3/02 , H01P7/00 , H03F1/22 , H03F3/26 , H03F3/343 , H03F3/423 , H03F3/45183 , H03F3/45188 , H03F3/45242 , H03F3/45475 , H03F3/602 , H03F3/604 , H03F2200/537 , H03F2200/541 , H03F2200/543
摘要： An integrated power combiner is disclosed. The power combiner includes a first circular geometry primary winding having one or more inductive elements, such as an active winding with one or more driver stages. A circular geometry secondary winding is disposed adjacent to the first primary winding, such as an active winding with one or more driver stages. A second circular geometry primary winding is disposed adjacent to the secondary winding and has one or more inductive elements. One or more connections are provided between one or more of the inductive elements of the first circular geometry primary winding and one or more of the inductive elements of the second circular geometry primary winding.
摘要翻译：公开了一种集成功率组合器。功率组合器包括具有一个或多个电感元件的第一圆形几何初级绕组，例如具有一个或多个驱动级的有源绕组。圆形几何次级绕组被布置为与第一初级绕组相邻，例如具有一个或多个驱动级的有源绕组。第二圆形几何初级绕组被布置成与次级绕组相邻并且具有一个或多个电感元件。在第一圆形几何初级绕组的一个或多个感应元件和第二圆形几何初级绕组的一个或多个感应元件之间提供一个或多个连接。

18. 发明申请

US20050093637A1 Distributed oscillator architectures 审中-公开
标题翻译：分布式振荡器架构
公开(公告)号：US20050093637A1
公开(公告)日：2005-05-05
申请号：US10988681
申请日：2004-11-15
申请人： Seyed-Ali Hajimiri , Hui Wu
发明人： Seyed-Ali Hajimiri , Hui Wu
IPC分类号： H03B5/18
CPC分类号： H03B5/1852 , H03B5/1847
摘要： A voltage controlled oscillator is provided. The voltage controlled oscillator includes a traveling-wave amplifier having two inputs and two outputs, such as would be formed by a first transmission line having a first input and a first output and a second transmission line having a second input and a second output. The first output of the traveling-wave amplifier is connected to the first input. A delay is connected between the second output and the second input, so as to provide a voltage controlled oscillator that requires minimal power to operate.
摘要翻译：提供压控振荡器。压控振荡器包括具有两个输入和两个输出的行波放大器，例如将由具有第一输入和第一输出的第一传输线和具有第二输入和第二输出的第二传输线形成。行波放大器的第一输出端连接到第一输入端。延迟连接在第二输出和第二输入之间，以便提供需要最小功率来操作的压控振荡器。

19. 发明申请

US20050030098A1 Distributed circular geometry power amplifier architecture 有权
标题翻译：分布式圆形几何功率放大器架构
公开(公告)号：US20050030098A1
公开(公告)日：2005-02-10
申请号：US10942348
申请日：2004-09-16
申请人： Ichiro Aoki , Seyed-Ali Hajimiri , David Rutledge , Scott Kee
发明人： Ichiro Aoki , Seyed-Ali Hajimiri , David Rutledge , Scott Kee
IPC分类号： H03F1/22 , H03F3/26 , H03F3/42 , H03F3/60
CPC分类号： H03F1/223 , H03F3/265 , H03F3/423 , H03F3/604 , H03F2200/534 , H03F2200/537 , H03F2200/541
摘要： The present invention discloses a distributed power amplifier topology and device that efficiently and economically enhances the power output of an RF signal to be amplified. The power amplifier comprises a plurality of push-pull amplifiers interconnected in a novel circular geometry that preferably function as a first winding of an active transformer having signal inputs of adjacent amplification devices driven with an input signal of equal magnitude and opposite phase. The topology also discloses the use of a secondary winding that matches the geometry of primary winding and variations thereof that serve to efficiently combine the power of the individual power amplifiers. The novel architecture enables the design of low-cost, fully-integrated, high-power amplifiers in the RF, microwave, and millimeter-wave frequencies.
摘要翻译：本发明公开了一种分布式功率放大器拓扑和器件，其有效且经济地增强待放大的RF信号的功率输出。功率放大器包括以新颖的圆形几何互连的多个推挽放大器，其优选地用作有源变压器的第一绕组，该有源变压器的信号输入由相等幅度和相反相位的输入信号驱动的相邻放大器件的信号输入。该拓扑还公开了使用与初级绕组的几何形状及其变化相匹配的次级绕组，其用于有效地组合各个功率放大器的功率。新颖的架构使得能够在RF，微波和毫米波频率中设计低成本，完全集成的大功率放大器。

20. 发明授权

US06784732B2 Class E/F switching power amplifiers 有权
公开(公告)号：US06784732B2
公开(公告)日：2004-08-31
申请号：US10715696
申请日：2003-11-18
申请人： Seyed-Ali Hajimiri , Ichiro Aoki , David B. Rutledge , Scott David Kee
发明人： Seyed-Ali Hajimiri , Ichiro Aoki , David B. Rutledge , Scott David Kee
IPC分类号： H03F3217
CPC分类号： H03F3/217 , H02M7/48 , H02M7/537 , H03F3/2173 , H03F3/2176
摘要： The present invention discloses a new family of switching amplifier classes called “class E/F amplifiers.” These amplifiers are generally characterized by their use of the zero-voltage-switching (ZVS) phase correction technique to eliminate of the loss normally associated with the inherent capacitance of the switching device as utilized in class-E amplifiers, together with a load network for improved voltage and current wave-shaping by presenting class-F−1 impedances at selected overtones and class-E impedances at the remaining overtones. The present invention discloses a several topologies and specific circuit implementations for achieving such performance.

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