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1. 发明授权

US07969359B2 Reflective phase shifter and method of phase shifting using a hybrid coupler with vertical coupling 有权
标题翻译：使用具有垂直耦合的混合耦合器的反相移相器和相移方法
公开(公告)号：US07969359B2
公开(公告)日：2011-06-28
申请号：US12348163
申请日：2009-01-02
申请人： Harish Krishnaswamy , Arun Sridhar Natarajan , Alberto Valdes Garcia
发明人： Harish Krishnaswamy , Arun Sridhar Natarajan , Alberto Valdes Garcia
IPC分类号： H01Q3/36 , H01P1/18
CPC分类号： H01P1/185
摘要： A phase shifter and method include a hybrid coupler being ground shielded. The hybrid coupler with reflective terminations connected to the hybrid coupler is configured to phase shift an applied signal wherein the reflective terminations include a parallel LC circuit.
摘要翻译：移相器和方法包括被接地屏蔽的混合耦合器。连接到混合耦合器的具有反射端接的混合耦合器被配置为相移移位的信号，其中反射端接包括并联LC电路。

2. 发明申请

US20100171567A1 INTEGRATED MILLIMETER WAVE PHASE SHIFTER AND METHOD 有权
标题翻译：集成的毫米波相移和方法
公开(公告)号：US20100171567A1
公开(公告)日：2010-07-08
申请号：US12348163
申请日：2009-01-02
申请人： Harish Krishnaswamy , Arun Sridhar Natarajan , Alberto Valdes Garcia
发明人： Harish Krishnaswamy , Arun Sridhar Natarajan , Alberto Valdes Garcia
IPC分类号： H01P1/18 , H01P5/12
CPC分类号： H01P1/185
摘要： A phase shifter and method include a hybrid coupler being ground shielded. The hybrid coupler with reflective terminations connected to the hybrid coupler is configured to phase shift an applied signal wherein the reflective terminations include a parallel LC circuit.
摘要翻译：移相器和方法包括被接地屏蔽的混合耦合器。连接到混合耦合器的具有反射端接的混合耦合器被配置为相移移位的信号，其中反射端接包括并联LC电路。

3. 发明授权

US11031665B2 Magnetic-free non-reciprocal circuits based on sub-harmonic spatio-temporal conductance modulation 有权
公开(公告)号：US11031665B2
公开(公告)日：2021-06-08
申请号：US16318074
申请日：2017-07-21
申请人： Tolga Dinc , Harish Krishnaswamy
发明人： Tolga Dinc , Harish Krishnaswamy
IPC分类号： H01P1/38 , H03D7/16 , H04L5/14 , H01P1/383
摘要： A circuit comprising a differential transmission line and eight switches provides non-reciprocal signal flow. In some embodiments, the circuit can be driven by four local oscillator signals. The circuit can be used to form a gyrator. The circuit can be used to form a circulator. The circuit can be used to form three-port circulator than can provide direction signal flow between a transmitter and an antenna and from the antenna to a receiver. The three-port circulator can be used to implement a full duplex transceiver that uses a single antenna for transmitting and receiving.

4. 发明申请

US20190319592A1 CIRCUITS FOR PROVIDING CLASS-E POWER AMPLIFIERS 审中-公开
公开(公告)号：US20190319592A1
公开(公告)日：2019-10-17
申请号：US16225177
申请日：2018-12-19
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.

5. 发明申请

US20170170999A1 CIRCUITS AND METHODS FOR PERFORMING SELF-INTERFERENCE CANCELATION IN FULL-DUPLEX TRANSCEIVERS 有权
公开(公告)号：US20170170999A1
公开(公告)日：2017-06-15
申请号：US15391292
申请日：2016-12-27
申请人： Jin Zhou , Harish Krishnaswamy
发明人： Jin Zhou , Harish Krishnaswamy
IPC分类号： H04L25/08 , H04L5/14
CPC分类号： H04L25/08 , H04L5/1461
摘要： Full duplex transceivers are provided, the transceivers comprising: a transmitter section that includes an analog portion having analog baseband signals and a digital portion having digital baseband signals; a receiver section that includes an analog portion having analog baseband signals and a digital portion having digital baseband signals; an analog self-interference canceller that, in response to the analog baseband signals in the analog portion of the transmitter section, produces analog cancellation signals that cancel first self-interference in the analog baseband signals in the analog portion of the receiver section; and a digital self-interference canceller that, in response to the digital baseband signals in the digital portion of the transmitter section, produces digital cancellation signals that cancel second self-interference in the digital baseband signals in the digital portion of the receiver section.

6. 发明授权

US08108037B1 Methods and systems for identifying a vector for monitoring ischemia 有权
标题翻译：识别用于监测缺血的载体的方法和系统
公开(公告)号：US08108037B1
公开(公告)日：2012-01-31
申请号：US12834596
申请日：2010-07-12
申请人： Harish Krishnaswamy , Anil Keni
发明人： Harish Krishnaswamy , Anil Keni
IPC分类号： A61B5/04
CPC分类号： A61B5/0452 , A61B5/6846
摘要： Methods and systems may identify a vector or a vector configuration, such as a combination of electrodes, for monitoring ischemia. The method may include: selecting a first combination of sensors as a first candidate to be used for monitoring ischemia; detecting a shift in a ST segment of one of an electrocardiogram and a cardiac electrogram using the first candidate; selecting a second combination of sensors as a second candidate to be used for monitoring ischemia; detecting a shift in a ST segment of one of an electrocardiogram and a cardiac electrogram using the second candidate; comparing the ST shifts for the first and second candidates; and identifying one of the first and second candidates for monitoring ischemia based on the comparison. A multi-electrode implantable cardiac device may include a controller configured to effectuate such functions.
摘要翻译：方法和系统可以识别用于监测缺血的载体或载体构型，例如电极的组合。该方法可以包括：选择传感器的第一组合作为用于监测缺血的第一候选物; 使用所述第一候选来检测心电图和心电图之一的ST段的移位; 选择传感器的第二组合作为用于监测缺血的第二候选者; 使用所述第二候选来检测心电图和心电图之一的ST段的移位; 比较第一和第二候选人的ST班次; 并且基于该比较来识别用于监测缺血的第一和第二候选者之一。多电极可植入心脏设备可以包括被配置为实现这样的功能的控制器。

7. 发明申请

US20110245699A1 SYSTEMS AND METHODS RELATED TO ST SEGMENT MONITORING BY AN IMPLANTABLE MEDICAL DEVICE 有权
标题翻译：通过可植入医疗器械进行ST段监测的系统和方法
公开(公告)号：US20110245699A1
公开(公告)日：2011-10-06
申请号：US13049805
申请日：2011-03-16
申请人： Jay Snell , Bing Zhu , Katie Hoberman , Harish Krishnaswamy
发明人： Jay Snell , Bing Zhu , Katie Hoberman , Harish Krishnaswamy
IPC分类号： A61B5/0452
CPC分类号： A61B5/0452 , A61B5/7264
摘要： Cardiac activity is sensed over a plurality of heart beats defining a beat set. For each beat in the set, it is determined whether the beat is a non-classified beat (e.g., paced beat, a beat outside of a specified heart rate range or a PVC), or a classified beat. For each classified beat, it is determined whether the beat is a non-detect beat, a minor beat or a major beat. Counts of classified beats, non-classified beats, major beats, minor beats, and non-detect beats are maintained. The beat set is declared to be one of a non-classified set, a major set, a minor set or a non-detect set based on the relative counts of classified beats, non-classified beats, major beats, minor beats, and non-detect beats. Over a period of time, counts of beat-set types are maintained and entry into and exit from ST episodes are determined based on these beat-set counts.
摘要翻译：在定义拍子组的多个心跳上感测到心脏活动。对于集合中的每个节拍，确定节拍是否是非分类节拍（例如，节奏拍子，指定的心率范围或PVC之外的节拍）或分类节拍。对于每个分类的节拍，确定节拍是否是非检测节拍，小节奏或主要节拍。维持分类节拍，非分类节拍，主要节拍，次要节拍和非检测节拍的数量。基于分类节拍，非分类节拍，主要节拍，次要节拍和非节奏组合的相对计数，节拍组被宣布为非分类组，主要组，未成年组或未检测组之一检测节拍在一段时间内，基于这些节拍设置计算确定节拍类型的计数，并且进入和退出ST剧集。

8. 发明申请

US20190305397A1 MAGNETIC-FREE NON-RECIPROCAL CIRCUITS BASED ON SUB-HARMONIC SPATIO-TEMPORAL CONDUCTANCE MODULATION 审中-公开
公开(公告)号：US20190305397A1
公开(公告)日：2019-10-03
申请号：US16318074
申请日：2017-07-21
申请人： Tolga Dinc , Harish Krishnaswamy
发明人： Tolga Dinc , Harish Krishnaswamy
IPC分类号： H01P1/38 , H03D7/16 , H04L5/14
摘要： A circuit comprising a differential transmission line and eight switches provides non-reciprocal signal flow. In some embodiments, the circuit can be driven by four local oscillator signals. The circuit can be used to form a gyrator. The circuit can be used to form a circulator. The circuit can be used to form three-port circulator than can provide direction signal flow between a transmitter and an antenna and from the antenna to a receiver. The three-port circulator can be used to implement a full duplex transceiver that uses a single antenna for transmitting and receiving.

9. 发明申请

US20180331408A1 CIRCUITS AND METHODS FOR NON-RECIPROCAL CIRCULATORS AND TRANSCEIVERS USING SAME 审中-公开
公开(公告)号：US20180331408A1
公开(公告)日：2018-11-15
申请号：US15774410
申请日：2016-12-07
申请人： Negar Reiskarimian , Harish Krishnaswamy
发明人： Negar Reiskarimian , Harish Krishnaswamy
IPC分类号： H01P1/397 , H01P5/22 , G02F1/01 , H04B1/44 , H03H11/16 , H04B1/525
CPC分类号： H01P1/397 , G02F1/011 , H01P5/222 , H03H7/00 , H03H7/52 , H03H11/16 , H04B1/44 , H04B1/525 , H04B3/40 , H04L5/16
摘要： In accordance with some embodiments, non-reciprocal circulators are provided, the circulators comprising: a 3λX/4-long ring section having a first end and a second end, wherein λ is an operating wavelength of the non-reciprocal circulator; and a N-path filter having a first port, a second port, and N-paths, each of the N-paths being connected to the first port and the second port. In some of these embodiments, the 3λ/4-long ring section includes a transmit port, an antenna port, and a receive port. In some of these embodiments, the transmit port is λ/4 away from the antenna port. In some of these embodiments, the antenna port is λ/4 away from the receive port. In some of these embodiments, the receive port is at the first port of the N-path filter.

10. 发明申请

US20170317684A1 WIRELESS-TRANSMITTER CIRCUITS INCLUDING POWER DIGITAL-TO-AMPLITUDE CONVERTERS 审中-公开
公开(公告)号：US20170317684A1
公开(公告)日：2017-11-02
申请号：US15401547
申请日：2017-01-09
申请人： Anandaroop Chakrabarti , Harish Krishnaswamy
发明人： Anandaroop Chakrabarti , Harish Krishnaswamy
IPC分类号： H03M1/66 , H03M1/78 , H03G3/00 , H04L27/00 , H03M1/74 , H04L25/03 , 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.

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