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1. 发明申请

US20200274246A1 METHOD FOR TUNING AN ANTENNA WITH A DVC 审中-公开
公开(公告)号：US20200274246A1
公开(公告)日：2020-08-27
申请号：US16316311
申请日：2017-07-19
申请人： CAVENDISH KINETICS, INC.
发明人： Chenhui NIU , Ray PARKHURST , Paul Anthony TORNATTA, Jr. , Lars Ernst JOHNSSON
IPC分类号： H01Q15/14
摘要： The present disclosure generally relates to any device capable of wireless communication, such as a mobile telephone or wearable device, having one or more antennas. After measuring reflection coefficients of a device at three different DVC states, the reflection coefficient for all other DVC states can be calculated. Thus, based solely upon three reflection coefficient measurements, the antenna can be tuned to adjust for any changes in impedance at the antenna.

2. 发明申请

US20190148818A1 HEAD-HAND CAPACITANCE COMPENSATION WITH DIGITAL VARIABLE CAPACITOR 审中-公开
公开(公告)号：US20190148818A1
公开(公告)日：2019-05-16
申请号：US16247529
申请日：2019-01-14
申请人： CAVENDISH KINETICS, INC.
发明人： Ray PARKHURST , Paul Anthony TORNATTA, JR.
IPC分类号： H01Q1/24 , H01Q1/48 , H01Q7/00 , H01Q9/04 , H01Q9/42
CPC分类号： H01Q1/245 , H01Q1/48 , H01Q7/005 , H01Q9/0421 , H01Q9/42
摘要： The present disclosure generally relates to a device having a capacitance sensor that detects a change in capacitance that occurs in the antenna whenever the antenna is in close proximity to a user's hand and/or head. Following detection of the capacitance change, the capacitance of the antenna may be changed by using a variable capacitor that is coupled to the sensor through a controller.

3. 发明申请

US20170018841A1 HEAD-HAND CAPACITANCE COMPENSATION WITH DIGITAL VARIABLE CAPACITOR 审中-公开
标题翻译：用数字可变电容器进行头戴式电容补偿
公开(公告)号：US20170018841A1
公开(公告)日：2017-01-19
申请号：US15301277
申请日：2015-04-02
申请人： CAVENDISH KINETICS, INC.
发明人： Ray PARKHURST , Paul Anthony TORNATTA, Jr.
IPC分类号： H01Q1/24 , H01Q7/00 , H01Q1/48 , H01Q9/42
CPC分类号： H01Q1/245 , H01Q1/48 , H01Q7/005 , H01Q9/0421 , H01Q9/42
摘要： The present disclosure generally relates to a device having a capacitance sensor that detects a change in capacitance that occurs in the antenna whenever the antenna is in close proximity to a user's hand and/or head. Following detection of the capacitance change, the capacitance of the antenna may be changed by using a variable capacitor that is coupled to the sensor through a controller.
摘要翻译：本公开总体上涉及一种具有电容传感器的装置，每当天线靠近用户的手和/或头部时，其检测天线中出现的电容变化。在检测到电容变化之后，可以通过使用通过控制器耦合到传感器的可变电容器来改变天线的电容。

4. 发明申请

US20180277960A1 METHOD AND APPARATUS OF MAINTAINING CONSTANT ANTENNA RESONANT FREQUENCY AND IMPEDANCE MATCH IN THE P 有权
公开(公告)号：US20180277960A1
公开(公告)日：2018-09-27
申请号：US15571234
申请日：2016-05-18
申请人： CAVENDISH KINETICS, INC.
发明人： Lars Ernst JOHNSSON , Ray PARKHURST , Paul Anthony TORNATTA, JR. , Roberto GADDI , Chenhui NIU
IPC分类号： H01Q19/02 , H01Q1/24
CPC分类号： H01Q19/027 , H01Q1/243 , H04B1/0458 , H04B1/0475
摘要： The present disclosure generally relates to any device capable of wireless communication, such as a mobile telephone or wearable device, having one or more antennas. By applying a variable reactance (capacitive or inductive component) antenna aperture tuner within a simple, scalar antenna aperture tuning system, the maintenance of a constant antenna resonant frequency in the presence of environmental changes or head/hand effects is obtained. The variable reactance is used to adjust the resonant frequency of the antenna to stay at the desired target frequency in response to external variables that would otherwise shift the resonance away from the operating frequency of the device. Adjusting the resonant frequency of the antenna in response to externally induced changes maintains the radiating efficiency of the antenna and simultaneously avoids impedance mismatch between the antenna and the respective transmit/receive path in the radio, thereby minimizing transmission losses.

5. 发明申请

US20170250660A1 POWER AMPLIFIER MATCHING CIRCUIT WITH DVCS 审中-公开
公开(公告)号：US20170250660A1
公开(公告)日：2017-08-31
申请号：US15516995
申请日：2015-09-23
申请人： CAVENDISH KINETICS, INC.
发明人： Ray PARKHURST
IPC分类号： H03F1/56 , H03F3/213 , H03F3/195
CPC分类号： H03F1/56 , H03F1/565 , H03F3/195 , H03F3/213 , H03F3/245 , H03F2200/102 , H03F2200/387 , H03F2200/451 , H03H7/40 , H03H2007/013
摘要： Embodiments disclosed herein generally relate to power amplifier matching circuits used for matching impedance and harmonic control in a device, such as a cellular phone. In one example, a power amplifier matching circuit includes two DVCs, four inductors, a transistor, and a capacitor. Utilizing the two DVCs, the impedance matching ratio and the center frequency of the circuit are capable of adjustment as needed. Moreover, the inclusion of the two DVCs may also prevent harmonic frequencies from undesirably passing through the power amplifier matching circuit to the antenna of a cellular device. The power amplifier matching circuit may be used in conjunction with an amplifier, where the output of the amplifier is proportional to the current in the circuit.

6. 发明申请

US20170019137A1 DEVICE WITH VARIABLE FREQUENCY FILTER FOR REJECTING HARMONICS 审中-公开
标题翻译：具有可变频率滤波器的器件用于拒绝谐波
公开(公告)号：US20170019137A1
公开(公告)日：2017-01-19
申请号：US15301262
申请日：2015-04-02
申请人： CAVENDISH KINETICS, INC.
发明人： Ray PARKHURST , Roberto GADDI
IPC分类号： H04B1/12 , H04B1/18 , H04B1/04
摘要： The present disclosure generally relates to a device having a variable frequency filter that rejects harmonics generated by a variable reactance device. The variable frequency filter may be coupled to the antenna and the variable reactance device. The filter includes a variable capacitor and an inductor coupled together as a resonant circuit. The filter may be used in cellular technology to prevent harmonic frequencies that are created by another variable reactance device from reaching the antenna of the cellular device. Furthermore, the filter can reflect any receiving frequencies from the antenna and prevent the receiving frequencies from passing through.
摘要翻译：本公开总体上涉及一种具有可变频率滤波器的装置，其抑制由可变电抗装置产生的谐波。可变频率滤波器可以耦合到天线和可变电抗装置。滤波器包括作为谐振电路耦合在一起的可变电容器和电感器。滤波器可用于蜂窝技术中以防止由另一可变电抗装置产生的谐波频率到达蜂窝设备的天线。此外，滤波器可以反射来自天线的任何接收频率并防止接收频率通过。

7. 发明申请

US20180315748A1 ESD PROTECTION OF MEMS FOR RF APPLICATIONS 审中-公开
公开(公告)号：US20180315748A1
公开(公告)日：2018-11-01
申请号：US15771245
申请日：2016-11-14
申请人： CAVENDISH KINETICS, INC.
发明人： Roberto GADDI , James Douglas HUFFMAN , Chenhui NIU , Ray PARKHURST
IPC分类号： H01L27/02 , H01H1/00 , H01H9/54 , B81B7/02
CPC分类号： H01H1/0036 , H01H59/0009 , H01L27/0248
摘要： The present disclosure generally relates to the combination of MEMS intrinsic technology with specifically designed solid state ESD protection circuits in state of the art solid state technology for RF applications. Using ESD protection in MEMS devices has some level of complexity in the integration which can be seen by some as a disadvantage. However, the net benefits in the level of overall performance for insertion loss, isolation and linearity outweighs the disadvantages.

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