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11. 发明申请

US20170222709A1 CIRCUITS AND METHODS FOR SPATIO-SPECTRAL INTERFERENCE MITIGATION 有权
公开(公告)号：US20170222709A1
公开(公告)日：2017-08-03
申请号：US15420023
申请日：2017-01-30
申请人： Linxiao Zhang , Harish Krishnaswamy
发明人： Linxiao Zhang , Harish Krishnaswamy
IPC分类号： H04B7/08 , H03F3/195
CPC分类号： H04B7/0868 , H03F3/195 , H03F3/245 , H03F3/45475 , H03F3/68 , H03F2200/294 , H03F2200/451
摘要： A plurality of receivers each having: an RF amplifier having an RFAMP input coupled to an antenna and having an RFAMP output; a capacitor having a CAP first side connected to the RFAMP output and a CAP second side; a passive mixer coupled to the RFAMP input, the CAP second side, and the output of a local oscillator phase shifter; an operational transconductor amplifier having an OTA input connected to the CAP second side and having an OTA output; a feedback resistor connected between the OTA input and the OTA output; a baseband transconductor having a BBGM input connected to the OTA input and a BBGM output; a cancelling transconductor having a CANCELLER output connected to the BBGM output and having a CANCELLER input; and an attenuator between the OTA output and the CANCELLER input, wherein the OTA output of each of the plurality of receivers are connected together.

12. 发明授权

US09614541B2 Wireless-transmitter circuits including power digital-to-amplitude converters 有权
公开(公告)号：US09614541B2
公开(公告)日：2017-04-04
申请号：US14873177
申请日：2015-10-01
申请人： Anandaroop Chakrabarti , Harish Krishnaswamy
发明人： Anandaroop Chakrabarti , Harish Krishnaswamy
IPC分类号： H03M1/66 , H03M1/78 , H04L27/00 , H03M1/74 , H03G3/00 , H03G3/30 , H04L25/03
CPC分类号： H03M1/66 , H03G3/001 , H03G3/3036 , H03M1/745 , H03M1/78 , H04L25/03878 , H04L27/00
摘要： Circuits comprising: digital-to-amplitude converter (DAC), comprising: binary weighted switching transistors (BWSTs), each having gate coupled to amplitude control bit ACB, and wherein the drain of each of the BWSTs are connected together and wherein the source of each of the BWSTs are connected together; transistor M1 having gate coupled to input signal and first bias voltage BV1 and source coupled to the drains of the BWSTs; transistor M2 having gate coupled to BV2 and source coupled to the drain of M1; transistor M3 having gate coupled to BV3 and source coupled to the drain of M2; transistor having gate coupled to BV4, source coupled to the drain of M3; and inverter having input coupled to another ACB and having output coupled to the output of the DAC and the drain of M4.

13. 发明申请

US20170054224A1 CIRCUITS AND METHODS FOR ANTENNA-BASED SELF-INTERFERENCE CANCELLATION 审中-公开
标题翻译：用于基于天线的自干扰消除的电路和方法
公开(公告)号：US20170054224A1
公开(公告)日：2017-02-23
申请号：US15244869
申请日：2016-08-23
申请人： Tolga Dinc , Harish Krishnaswamy
发明人： Tolga Dinc , Harish Krishnaswamy
IPC分类号： H01Q21/24 , H01Q7/00 , H01Q3/26
CPC分类号： H01Q1/38 , H01Q1/525 , H01Q5/314 , H01Q21/06 , H04B1/06 , H04W16/14
摘要： Circuits and methods for antenna-based self-interference cancellation are provided. In some embodiments, circuits for antenna-based self-interference cancellation are provided, the circuits comprising: a transmit antenna having a transmit port that receives a transmit signal; a receive antenna having a receive port that is cross-polarized with respect to the transmit port and having an auxiliary port that is co-polarized with respect to the transmit port; and a termination connected to the auxiliary port that reflects a signal received at the auxiliary port as a reflected signal, wherein the reflected signal counters interference caused by the transmit signal at the receive port.
摘要翻译：提供了基于天线的自干扰消除的电路和方法。在一些实施例中，提供了用于基于天线的自干扰消除的电路，所述电路包括：具有接收发射信号的发射端口的发射天线; 接收天线，其具有相对于所述发射端口交叉极化并具有相对于所述发射端口共极化的辅助端口的接收端口; 以及连接到辅助端口的终端，其将在辅助端口处接收的信号反射为反射信号，其中反射信号计数由接收端口处的发射信号引起的干扰。

14. 发明申请

US20080297414A1 ULTRA-WIDEBAND VARIABLE-PHASE RING-OSCILLATOR ARRAYS, ARCHITECTURES, AND RELATED METHODS 失效
标题翻译：超宽带可变振荡器振荡器阵列，结构和相关方法
公开(公告)号：US20080297414A1
公开(公告)日：2008-12-04
申请号：US12131805
申请日：2008-06-02
申请人： Harish Krishnaswamy , Hossein Hashemi
发明人： Harish Krishnaswamy , Hossein Hashemi
IPC分类号： H01Q3/00 , H03L7/00
CPC分类号： H01Q3/28 , H01Q3/36 , H03L7/087 , H03L7/0891 , H03L7/0995
摘要： Variable phase ring oscillators are described that provide a linear phase progression between adjacent elements in an antenna array by providing a symmetric ring configuration of tuned amplifiers and a single phase shifter. The ring topology is coupled to a single PLL that allows for direct modulation and demodulation of arbitrary waveforms without using RF up/down converting mixers. The PLL distributes the transmit waveforms to all antenna elements in the transmit mode and combines the received waveforms in the receive mode without any complicated power distribution network. Ultra-wideband architectures and methods are described that utilize a first reference signal source, a VPRO, and a second reference signal source. Related methods are controlling an array and beam steering are also described.
摘要翻译：描述了可变相位振荡器，其通过提供调谐放大器和单个移相器的对称环配置来在天线阵列中的相邻元件之间提供线性相位进程。环形拓扑耦合到单个PLL，允许直接调制和解调任意波形，而无需使用RF上/下转换混频器。 PLL将发射波形分配给发射模式下的所有天线元件，并将接收的波形组合在接收模式中，无需任何复杂的配电网络。描述了利用第一参考信号源，VPRO和第二参考信号源的超宽带架构和方法。还描述了相关方法控制阵列和波束转向。

15. 发明申请

US20060284129A1 Electromagnetic actuator and method for controlling fluid flow 有权
公开(公告)号：US20060284129A1
公开(公告)日：2006-12-21
申请号：US11155839
申请日：2005-06-17
申请人： Harish Krishnaswamy , Nadeem Bunni , Stephen Lewis , Dana Coldren
发明人： Harish Krishnaswamy , Nadeem Bunni , Stephen Lewis , Dana Coldren
IPC分类号： H02K41/00 , F16K31/02 , F02N3/00
CPC分类号： F02M57/02 , F02M47/027 , F02M59/366 , F02M63/0015 , F02M63/0049 , F16K31/0675 , H01F7/081 , H01F7/1638
摘要： An apparatus and method for controlling fluid flow is disclosed. An electromagnetic actuator may include a stator having an inner pole member and an outer pole member. The outer pole member may have a fluid passageway therein for transmitting fluid through the outer pole member. The actuator may further include a coil disposed around the inner pole member and arranged between the inner pole member and the outer pole member. The actuator may also include an armature moveable under the influence of a magnetic field generated by the stator and coil and operable to affect transmission of the fluid through the fluid passageway.

16. 发明授权

US10277204B2 Circuits and methods for transceiver self-interference cancellers 有权
公开(公告)号：US10277204B2
公开(公告)日：2019-04-30
申请号：US15515823
申请日：2015-10-01
申请人： Jin Zhou , Harish Krishnaswamy
发明人： Jin Zhou , Harish Krishnaswamy
IPC分类号： H03H19/00 , H04B1/525 , H04B17/336 , H04L25/03
摘要： Self-interference cancellers are provided. The self-interference cancellers can include multiple second-order, N-path Gm-C filters. Each filter can be configured to cancel self-interference on a channel of a desired bandwidth. Each filter can be independently controlled using a variable transmitter resistance, a variable receiver resistance, a variable baseband capacitance, a variable transconductance, and a variable time shift between local oscillators that control switches in the filter. By controlling these variables, magnitude, phase, slope of magnitude, and slope of phase of the cancellers frequency responses can be controlled for self-interference cancellation. A calibration process is also provided for configuring the canceller.

17. 发明授权

US10171050B2 Circuits for providing Class-E power amplifiers 有权
公开(公告)号：US10171050B2
公开(公告)日：2019-01-01
申请号：US15250447
申请日：2016-08-29
申请人： Anandaroop Chakrabarti , Harish Krishnaswamy
发明人： Anandaroop Chakrabarti , Harish Krishnaswamy
IPC分类号： H03F3/217 , H03F1/56
摘要： In some embodiments, circuits for providing Class-E power amplifiers are provided, the circuits comprising: a first switch having a first side and a second side; a first Class-E load network coupled to the first side of the first switch; a second Class-E load network; and a second switch having a first side and a second side, the first side of the second switch being coupled the second side of the first switch and the second Class-E load network. In some embodiments, the circuits further comprise: a third switch having a first side and a second side; a third Class-E load network coupled to the first side of the third switch; a fourth Class-E load network; and a fourth switch having a first side and a second side, the first side of the fourth switch being coupled the second side of the third switch and the fourth Class-E load network.

18. 发明申请

US20170194920A1 CIRCUITS FOR PROVIDING CLASS-E POWER AMPLIFIERS 审中-公开
公开(公告)号：US20170194920A1
公开(公告)日：2017-07-06
申请号：US15250447
申请日：2016-08-29
申请人： Anandaroop Chakrabarti , Harish Krishnaswamy
发明人： Anandaroop Chakrabarti , Harish Krishnaswamy
IPC分类号： H03F3/217 , H03F1/56
CPC分类号： H03F3/2176 , H03F1/56 , H03F2200/222 , H03F2200/387 , H03F2200/402
摘要： In some embodiments, circuits for providing Class-E power amplifiers are provided, the circuits comprising: a first switch having a first side and a second side; a first Class-E load network coupled to the first side of the first switch; a second Class-E load network; and a second switch having a first side and a second side, the first side of the second switch being coupled the second side of the first switch and the second Class-E load network. In some embodiments, the circuits further comprise: a third switch having a first side and a second side; a third Class-E load network coupled to the first side of the third switch; a fourth Class-E load network; and a fourth switch having a first side and a second side, the first side of the fourth switch being coupled the second side of the third switch and the fourth Class-E load network.

19. 发明申请

US20160099820A1 CIRCUITS AND METHODS FOR WIRELESS TRANSMITTERS 有权
标题翻译：无线发射机的电路和方法
公开(公告)号：US20160099820A1
公开(公告)日：2016-04-07
申请号：US14873177
申请日：2015-10-01
申请人： Anandaroop Chakrabarti , Harish Krishnaswamy
发明人： Anandaroop Chakrabarti , Harish Krishnaswamy
IPC分类号： H04L25/03 , H03K3/013 , H03G3/30
CPC分类号： H03M1/66 , H03G3/001 , H03G3/3036 , H03M1/745 , H03M1/78 , H04L25/03878 , H04L27/00
摘要： Circuits comprising: digital-to-amplitude converter (DAC), comprising: binary weighted switching transistors (BWSTs), each having gate coupled to amplitude control bit ACB, and wherein the drain of each of the BWSTs are connected together and wherein the source of each of the BWSTs are connected together; transistor M1 having gate coupled to input signal and first bias voltage BV1 and source coupled to the drains of the BWSTs; transistor M2 having gate coupled to BV2 and source coupled to the drain of M1; transistor M3 having gate coupled to BV3 and source coupled to the drain of M2; transistor having gate coupled to BV4, source coupled to the drain of M3; and inverter having input coupled to another ACB and having output coupled to the output of the DAC and the drain of M4.
摘要翻译：电路包括：数字到幅度转换器（DAC），包括：二进制加权开关晶体管（BWST），每个具有耦合到幅度控制位ACB的栅极，并且其中每个BWST的漏极连接在一起，并且其中源每个BWST都连接在一起; 晶体管M1具有耦合到输入信号的栅极和第一偏置电压BV1，并且源极耦合到BWST的漏极; 晶体管M2具有耦合到BV2的栅极并且耦合到M1的漏极的源极; 具有耦合到BV3的栅极和耦合到M2的漏极的源极的晶体管M3; 晶体管具有耦合到BV4的栅极，源极耦合到M3的漏极; 以及反相器具有耦合到另一个ACB并具有耦合到DAC的输出和M4的漏极的输出的输入。

20. 发明授权

US08469897B2 Method and system for tracking quality of life in patients with angina 有权
标题翻译：跟踪心绞痛患者生活质量的方法和系统
公开(公告)号：US08469897B2
公开(公告)日：2013-06-25
申请号：US11872669
申请日：2007-10-15
申请人： Seth Toren-Herrinton , Harish Krishnaswamy , Rajiv Venkata , Jason Sutor
发明人： Seth Toren-Herrinton , Harish Krishnaswamy , Rajiv Venkata , Jason Sutor
IPC分类号： A61B5/00
CPC分类号： A61B5/0205 , A61B5/042 , A61B5/0452 , A61B5/11 , A61N1/37 , A61N1/37252
摘要： A method and system for tracking quality of life in a patient with angina includes obtaining activity data and cardiac data, determining a level of physical activity of the patient and identifying an ischemic episode based on the cardiac data obtained during the physical activity. The method also provides for recording an activity level at the time the ischemic episode occurs. Furthermore, the method also provides for presenting activity level trends related to activity levels at the onset of ischemia to a user.
摘要翻译：用于跟踪患有心绞痛患者的生活质量的方法和系统包括获得活动数据和心脏数据，确定患者的身体活动水平并基于在体力活动期间获得的心脏数据识别缺血发作。该方法还提供在发生缺血发作时记录活动水平。此外，该方法还提供了向用户呈现与缺血发作时的活动水平相关的活动水平趋势。

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