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61. 发明授权

US07425869B2 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：US07425869B2
公开(公告)日：2008-09-16
申请号：US11480113
申请日：2006-06-30
申请人： Ichiro Aoki , Seyed-Ali Hajimiri , David B. Ruthledge , Scott David Kee
发明人： Ichiro Aoki , Seyed-Ali Hajimiri , David B. Ruthledge , Scott David Kee
IPC分类号： H03F3/26
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。

62. 发明授权

US07342457B2 Cross-differential amplifier 有权
公开(公告)号：US07342457B2
公开(公告)日：2008-03-11
申请号：US11638639
申请日：2006-12-12
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： H03F3/04
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.

63. 发明授权

US07157975B2 Cross-differential amplifier 有权
公开(公告)号：US07157975B2
公开(公告)日：2007-01-02
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： H03F3/04
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.

64. 发明申请

US20050140447A1 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：US20050140447A1
公开(公告)日：2005-06-30
申请号：US11037527
申请日：2005-01-18
申请人： Abbas Komijani , Seyed-Ali Hajimiri , Scott Kee , Ichiri Aoki
发明人： Abbas Komijani , Seyed-Ali Hajimiri , Scott Kee , Ichiri Aoki
IPC分类号： H03F3/26 , H03F3/42 , H03F3/60
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。

65. 发明授权

US06856199B2 Reconfigurable distributed active transformers 有权
公开(公告)号：US06856199B2
公开(公告)日：2005-02-15
申请号：US10386001
申请日：2003-03-11
申请人： Abbas Komijani , Seyed-Ali Hajimiri , Scott D. Kee , Ichiri Aoki
发明人： Abbas Komijani , Seyed-Ali Hajimiri , Scott D. Kee , Ichiri Aoki
IPC分类号： H03F3/26 , H03F3/42 , H03F3/60
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.

66. 发明授权

US06853260B1 Tunable, distributed voltage-controlled oscillator 有权
标题翻译：可调谐分布式压控振荡器
公开(公告)号：US06853260B1
公开(公告)日：2005-02-08
申请号：US10246998
申请日：2002-09-19
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 , H03B5/26
摘要： A voltage controlled oscillator is provided. The voltage controlled oscillator includes a differential transmission line and another transmission line, which can include a second differential transmission line or other suitable transmission lines. An active device connected to the differential transmission line and the other transmission line controls the current flow between the two transmission lines. A tuning circuit connected to the active device, such as a bias voltage, controls an oscillation frequency of a signal on the differential transmission line and the other transmission line, such as by controlling the level of current flow.
摘要翻译：提供压控振荡器。压控振荡器包括差分传输线和另一传输线，其可包括第二差分传输线或其它合适的传输线。连接到差分传输线和另一传输线的有源设备控制两条传输线之间的电流。连接到有源器件的调谐电路，例如偏置电压，例如通过控制电流电平来控制差分传输线和另一传输线上的信号的振荡频率。

67. 发明授权

US06674337B2 Concurrent multi-band low noise amplifier architecture 有权
标题翻译：并行多频低噪声放大器架构
公开(公告)号：US06674337B2
公开(公告)日：2004-01-06
申请号：US09821403
申请日：2001-03-28
申请人： Seyed-Hossein Hashemi , Seyed-Ali Hajimiri
发明人： Seyed-Hossein Hashemi , Seyed-Ali Hajimiri
IPC分类号： H03H738
CPC分类号： H03F1/223 , H03F3/191 , H03F3/193 , H03F3/72 , H03F2200/111 , H03F2200/294 , H03F2200/372 , H03F2200/429 , H03F2203/7236
摘要： The present invention relates to a concurrent multi-band amplifiers and to a monolithic, concurrent multi-band low noise amplifier (LNA). The inventive LNA includes a three-terminal active device, such as a transistor with a characteristic transconductance, gm, disposed on a semiconductor substrate. The active device has a control input terminal, an output terminal, and a current source terminal. The amplifier also includes an input impedance matching network system, Zin, and an output load network. Zin simultaneously and independently matches the frequency-dependent input impedance of the three-terminal active device to a predetermined characteristic impedance at two or more discrete frequency bands. The output load network simultaneously provides a voltage gain, Av, to an input signal at the amplifier input at each of the two or more discrete frequency bands.
摘要翻译：本发明涉及同时多频带放大器和单片并行多频带低噪声放大器（LNA）。本发明的LNA包括设置在半导体衬底上的三端有源器件，例如具有特征跨导的晶体管，gm。有源器件具有控制输入端子，输出端子和电流源端子。放大器还包括输入阻抗匹配网络系统Zin和输出负载网络。 Zin在两个或更多离散频带上同时且独立地将三端有源器件的频率相关输入阻抗与预定特性阻抗匹配。输出负载网络同时在两个或更多个离散频带中的每一个处的放大器输入处向输入信号提供电压增益Av。

68. 发明授权

US09599591B2 Low cost, portable sensor for molecular assays 有权
公开(公告)号：US09599591B2
公开(公告)日：2017-03-21
申请号：US13299087
申请日：2011-11-17
申请人： Alex H. Pai , Stephen A. Chapman , Seyed Ali Hajimiri
发明人： Alex H. Pai , Stephen A. Chapman , Seyed Ali Hajimiri
IPC分类号： G01N27/00 , G01N27/74 , G01N27/327 , C12Q1/68
CPC分类号： G01N27/745 , C12Q1/6825 , C12Q1/6834 , C12Q2523/303 , C12Q2525/301 , C12Q2563/143 , G01N27/3278
摘要： An integrated sensor that is capable of discriminating the distance of a label from the sensor without using an optical signal. The label is attached to a single probe molecule or a group of probe molecules that interacts with a single or group of target molecules. As a consequence of this interaction, the probe molecule and/or the target molecule undergo a conformal change. This conformal change leads to perturbations in the distance of the label from the sensor. Thus, measurements and properties such as the concentration and the identity of one or more target molecules can be discerned from signals generated by the sensor (or by a plurality of sensors in a sensor array) and subjected to analysis using general purpose programmable computers programmed with suitable software that controls the analytical process, and such measurements and properties can be provided as a result of the analysis.

69. 发明授权

US08971834B2 Digital and analog IM3 product compensation circuits for an RF receiver 有权
标题翻译： RF接收机的数字和模拟IM3产品补偿电路
公开(公告)号：US08971834B2
公开(公告)日：2015-03-03
申请号：US12952237
申请日：2010-11-23
申请人： Edward Keehr , Seyed Ali Hajimiri
发明人： Edward Keehr , Seyed Ali Hajimiri
IPC分类号： H04B1/10
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。

70. 发明授权

US08378669B2 Frequency-shift CMOS magnetic biosensor array with single bead sensitivity and no external magnet 有权
标题翻译：频移CMOS磁性生物传感器阵列，具有单珠灵敏度，无外部磁体
公开(公告)号：US08378669B2
公开(公告)日：2013-02-19
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： G01N27/72
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。

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