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1. 发明申请

US20050227660A1 Monolithic silicon-based phased arrays for communications and radars 有权
标题翻译：用于通信和雷达的单片硅基相控阵列
公开(公告)号：US20050227660A1
公开(公告)日：2005-10-13
申请号：US10988199
申请日：2004-11-12
申请人： Hossein Hashemi , Xiang Guan , Seyed Hajimiri
发明人： Hossein Hashemi , Xiang Guan , Seyed Hajimiri
IPC分类号： H01Q20060101 , H01Q3/22 , H01Q3/26 , H01Q3/42 , H01Q21/00 , H04B1/06 , H04B1/26 , H04B7/00
CPC分类号： H01Q3/26 , H01Q3/22 , H01Q3/2682 , H01Q3/42 , H01Q21/0093
摘要： 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.
摘要翻译：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。

2. 发明申请

US20070259632A1 TRANSMITTER ARCHITECTURE BASED ON ANTENNA PARASITIC SWITCHING 有权
标题翻译：基于天线平滑切换的发射机结构
公开(公告)号：US20070259632A1
公开(公告)日：2007-11-08
申请号：US11744278
申请日：2007-05-04
申请人： Aydin Babakhani , David Rutledge , Seyed Hajimiri
发明人： Aydin Babakhani , David Rutledge , Seyed Hajimiri
IPC分类号： H04B1/04
CPC分类号： H04B1/04
摘要： The invention is a radio transmitter that includes an antenna having at least one driven element and at least one reflector element. The driven element is electrically coupled to a radio carrier source. At least one of the driven elements or the at least one reflector element, includes at least one switch to modulate the radio carrier. Also, a secure communication system includes a radio transmitter configured to transmit a modulated signal within an information beam width. Also, a method for modulating a radio signal includes the steps of causing the transmitted carrier signal to be modulated by the modulation signal in response to switching the at least one reflector switch. Also, a method for selecting desirable antenna reflector switch combinations includes performing a mathematical simulation to determine whether the combination of reflector switch positions results in a modulated signal that can be demodulated within an information beam width.
摘要翻译：本发明是一种无线电发射机，其包括具有至少一个从动元件和至少一个反射器元件的天线。从动元件电耦合到无线电载体源。驱动元件或至少一个反射器元件中的至少一个包括至少一个调制无线电载体的开关。此外，安全通信系统包括被配置为在信息波束宽度内发送调制信号的无线电发射机。此外，一种用于调制无线电信号的方法包括以下步骤：响应于切换至少一个反射器开关，使所发送的载波信号由调制信号进行调制。此外，用于选择期望的天线反射器开关组合的方法包括执行数学模拟以确定反射器开关位置的组合是否产生可在信息波束宽度内被解调的调制信号。

3. 发明申请

US20070030102A1 2D transmission line-based apparatus and method 有权
标题翻译： 2D传输线路设备和方法
公开(公告)号：US20070030102A1
公开(公告)日：2007-02-08
申请号：US11413613
申请日：2006-04-28
申请人： Ehsan Afshari , Harish Bhat , Seyed Hajimiri
发明人： Ehsan Afshari , Harish Bhat , Seyed Hajimiri
IPC分类号： H01P1/00
CPC分类号： H01P5/12
摘要： A power combiner comprising an LC lattice structure is shown, together with a method for generating a planar wave front. The LC structure can comprise constant or voltage dependent capacitors. Either the delay or the characteristic impedance of the two-dimensional transmission line formed by the LC lattice structure are kept constant. A planar wave propagating along one direction of the transmission line gradually experiences higher impedances at the edges, creating a lower resistance path for the current in the middle. This funnels more power to the center as the wave propagates.
摘要翻译：示出了包括LC晶格结构的功率组合器以及用于产生平面波前的方法。 LC结构可以包括恒定或依赖于电压的电容器。由LC晶格结构形成的二维传输线的延迟或特性阻抗保持恒定。沿着传输线的一个方向传播的平面波逐渐在边缘处经受较高的阻抗，为中间的电流产生较低的电阻路径。随着波浪的传播，这个中心的力量更多。

4. 发明申请

US20050258866A1 Integrated circuit with breakdown voltage multiplier 有权
标题翻译：具有击穿电压倍增器的集成电路
公开(公告)号：US20050258866A1
公开(公告)日：2005-11-24
申请号：US11107402
申请日：2005-04-14
申请人： Sam Mandegaran , Seyed Hajimiri
发明人： Sam Mandegaran , Seyed Hajimiri
IPC分类号： H03K19/003 , H03K19/0175
CPC分类号： H03K19/00315 , H03K19/00307
摘要： An apparatus and method for driving an output signal in a high speed integrated circuit. The apparatus and methods enable the output voltage swing from the driver to exceed the breakdown voltage of any individual element in the output driver. A high speed driver can utilize one or more transistors in a stacked configuration, such that the breakdown voltage of the entire stacked configuration is based on the number of transistors in the stack. The driver is configured to distribute the output voltage substantially equally among each of the stacked transistors, such that the driver is able to source an output voltage swing that is greater than the breakdown voltage of any individual transistor in the driver.
摘要翻译：一种用于驱动高速集成电路中的输出信号的装置和方法。该装置和方法使得来自驱动器的输出电压摆幅超过输出驱动器中任何单独元件的击穿电压。高速驱动器可以利用堆叠配置中的一个或多个晶体管，使得整个堆叠配置的击穿电压基于堆叠中的晶体管的数量。驱动器被配置为在每个堆叠晶体管中基本上均等地分配输出电压，使得驱动器能够输出大于驱动器中的任何单独晶体管的击穿电压的输出电压摆幅。

5. 发明申请

US20050163207A1 Crosstalk equalizer 有权
标题翻译：串扰均衡器
公开(公告)号：US20050163207A1
公开(公告)日：2005-07-28
申请号：US11071413
申请日：2005-03-02
申请人： James Buckwalter , Seyed Hajimiri
发明人： James Buckwalter , Seyed Hajimiri
IPC分类号： H03K5/159
CPC分类号： H04L25/03878 , H04L7/0087 , H04L7/033
摘要： 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.
摘要翻译：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。

6. 发明申请

US20060121869A1 Multi-element phased array transmitter with LO phase shifting and integrated power amplifier 有权
公开(公告)号：US20060121869A1
公开(公告)日：2006-06-08
申请号：US11241875
申请日：2005-09-29
申请人： Arun Natarajan , Abbas Komijani , Seyed Hajimiri
发明人： Arun Natarajan , Abbas Komijani , Seyed Hajimiri
IPC分类号： H04B1/06
CPC分类号： H01Q3/42 , H01Q3/22
摘要： A fully integrated CMOS multi-element phased-array transmitter (transmitter) includes, in part, on-chip power amplifiers (PA), with integrated output matching. The transmitter is adapted to be configured as a two-dimensional 2-by-2 array or as a one dimensional 1-by-4 array. The transmitter uses a two step up-conversion architecture with an IF frequency of 4.8 GHz. Double-quadrature architecture for the up-conversion stages attenuates the signal at image frequencies. The phase selectors in each transmitter path have independent access to all the phases of the VCO. The double quadrature architecture results in two sets of phase selectors for each path, one for the in-phase (I) and one for the quadrature phase (Q) of the LO signal. The phase selection is done in two stages, with the first stage determining the desired VCO differential phase pair and the next stage selecting the appropriate polarity. An on-chip Balun is used for differential to single-ended conversion.

7. 发明申请

US20080058019A1 Multi-Element Phased Array Transmitter With LO Phase Shifting And Integrated Power Amplifier 有权
标题翻译：具有LO相移和集成功率放大器的多元相控阵发射器
公开(公告)号：US20080058019A1
公开(公告)日：2008-03-06
申请号：US11778419
申请日：2007-07-16
申请人： Arun Natarajan , Abbas Komijani , Seyed Hajimiri
发明人： Arun Natarajan , Abbas Komijani , Seyed Hajimiri
IPC分类号： H04M1/00
CPC分类号： H01Q3/42 , H01Q3/22
摘要： A fully integrated CMOS multi-element phased-array transmitter (transmitter) includes, in part, on-chip power amplifiers (PA), with integrated output matching. The transmitter is adapted to be configured as a two-dimensional 2-by-2 array or as a one dimensional 1-by-4 array. The transmitter uses a two step up-conversion architecture with an IF frequency of 4.8 GHz. Double-quadrature architecture for the up-conversion stages attenuates the signal at image frequencies. The phase selectors in each transmitter path have independent access to all the phases of the VCO. The double quadrature architecture results in two sets of phase selectors for each path, one for the in-phase (I) and one for the quadrature phase (Q) of the LO signal. The phase selection is done in two stages, with the first stage determining the desired VCO differential phase pair and the next stage selecting the appropriate polarity. An on-chip Balun is used for differential to single-ended conversion.
摘要翻译：完全集成的CMOS多元件相控阵发射器（发射机）部分包括集成输出匹配的片上功率放大器（PA）。发射机适于配置为二维2×2阵列或一维1×4阵列。发射机使用中频频率为4.8 GHz的两级升压转换架构。上转换级的双正交架构衰减了图像频率处的信号。每个发射器路径中的相位选择器具有对VCO的所有相位的独立访问。双正交架构为每个路径产生两组相位选择器，一组用于同相（I），另一组用于LO信号的正交相位（Q）。相位选择分为两个阶段，第一阶段确定期望的VCO差分相位对，下一个阶段选择适当的极性。片内平衡变换器用于差分到单端转换。

8. 发明申请

US20070086786A1 Electrical funnel: a novel broadband signal combining method 有权
标题翻译：电气漏斗：一种新颖的宽带信号组合方法
公开(公告)号：US20070086786A1
公开(公告)日：2007-04-19
申请号：US11525682
申请日：2006-09-22
申请人： Ehsan Afshari , Seyed Hajimiri
发明人： Ehsan Afshari , Seyed Hajimiri
IPC分类号： H04B10/00
CPC分类号： H01P5/02 , H01P5/12
摘要： An electrical signal transformation device configured for emulation of physical, for example, optical, phenomena and/or a mathematical or logical process. The device employs a first plurality, second plurality and third plurality of electrical components each having a first terminal and a second terminal. The first plurality and second plurality of electrical components are arranged along a first direction and a second direction respectively, to form a planar two dimensional lattice. The first plurality of electrical components are configured to provide at least one of a constant signal propagation velocity and/or amplitude while the second plurality of electrical components are configured to provide at least one of a varying signal propagation velocity and/or amplitude. The lattice includes at least two input signal nodes and at least one output signal node and is configured to transform and communicate a plurality of input signals from the input node to the output node.
摘要翻译：一种电信号转换装置，其被配置用于仿真物理，例如光学，现象和/或数学或逻辑过程。该装置采用每个具有第一端子和第二端子的第一多个，第二多个和第三多个电气部件。第一多个和第二多个电气部件分别沿着第一方向和第二方向布置，以形成平面二维晶格。第一多个电气部件被配置为提供恒定的信号传播速度和/或幅度中的至少一个，而第二多个电气部件被配置为提供变化的信号传播速度和/或振幅中的至少一个。晶格包括至少两个输入信号节点和至少一个输出信号节点，并且被配置为将多个输入信号从输入节点变换和传送到输出节点。

9. 发明申请

US20070040553A1 Spectral-scanning magnetic resonance imaging 审中-公开
标题翻译：光谱扫描磁共振成像
公开(公告)号：US20070040553A1
公开(公告)日：2007-02-22
申请号：US11499921
申请日：2006-08-07
申请人： Seyed Hajimiri , Arjang Hassibi , Hua Wang
发明人： Seyed Hajimiri , Arjang Hassibi , Hua Wang
IPC分类号： G01V3/00 , A61B5/05
CPC分类号： G01R33/3808 , G01R33/3607 , G01R33/3642 , G01R33/3657 , G01R33/446 , G01R33/5612 , G01R33/56383
摘要： Spectral scanning magnetic resonance imaging methods and systems. In preferred methods and systems of the invention, to measure the resonance spectrum of the target object, a plurality of excitation signals in different frequencies and/or waveform shapes are introduced simultaneously to the imaging volume through one or more excitation coils, and the response spectrum is measured also in real-time and/or after excitation. Systems of the invention can be compact and portable, with small magnets providing the deterministic inhomogeneous magnetic field. Preferred embodiments include integrated circuit transmitters and receivers. Preferred systems of the invention are suitable, for example, for point of care medical diagnostics.
摘要翻译：光谱扫描磁共振成像方法和系统。在本发明的优选方法和系统中，为了测量目标物体的共振谱，通过一个或多个励磁线圈将不同频率和/或波形形状的多个激励信号同时引入成像体积，并且响应谱也是在实时和/或激发后测量的。本发明的系统可以紧凑且便于携带，其中小的磁体提供确定性的非均匀磁场。优选实施例包括集成电路发射器和接收器。本发明的优选系统例如适用于护理点医疗诊断。

10. 发明申请

US20050152488A1 Deterministic jitter equalizer 有权
标题翻译：确定性抖动均衡器
公开(公告)号：US20050152488A1
公开(公告)日：2005-07-14
申请号：US11012857
申请日：2004-12-14
申请人： James Buckwalter , Seyed Hajimiri , Behnam Analui
发明人： James Buckwalter , Seyed Hajimiri , Behnam Analui
IPC分类号： H03H11/26 , H04B1/10 , H04L1/20 , H04L7/033
CPC分类号： H03H11/265 , H04L1/205 , H04L7/0337
摘要： An equalizer for serial data communications can be configured to compensate for the effects of deterministic jitter. The equalizer can be configured to compensate a received serial data stream for the effects of data-dependent jitter as well as duty cycle distortion jitter. The equalizer can be configured to determine the value of one or more previously received symbols and compare them to a recovered symbol. The equalizer can adjust a variable delay positioned in the serial data path to introduce a delay into the data path that is based in part on the received data stream. The equalizer can be configured to vary the delay when any of the one or more previously received symbols is different from the recovered symbol, and can be configured to maintain a constant delay if the one or more previously received symbols is the same as the recovered symbol.
摘要翻译：串行数据通信的均衡器可以配置为补偿确定性抖动的影响。均衡器可以配置为补偿接收的串行数据流，以获得与数据相关的抖动以及占空比失真抖动的影响。均衡器可以被配置为确定一个或多个先前接收的符号的值，并将其与恢复的符号进行比较。均衡器可以调整位于串行数据路径中的可变延迟，以将延迟引入到部分基于所接收的数据流的数据路径中。均衡器可以被配置为当一个或多个先前接收到的符号中的任一个与恢复的符号不同时，改变延迟，并且如果一个或多个先前接收到的符号与恢复的符号相同，则可以配置为保持恒定的延迟。

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