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公开(公告)号：US10418717B2
公开(公告)日：2019-09-17
申请号：US15571234
申请日：2016-05-18
Applicant: CAVENDISH KINETICS, INC.
Inventor： Lars Ernst Johnsson , Ray Parkhurst , Paul Anthony Tornatta, Jr. , Roberto Gaddi , Chenhui Niu
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US11462835B2
公开(公告)日：2022-10-04
申请号：US16316311
申请日：2017-07-19
Applicant: CAVENDISH KINETICS, INC.
Inventor： Chenhui Niu , Ray Parkhurst , Paul Anthony Tornatta, Jr. , Lars Ernst Johnsson
Abstract: 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.
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公开(公告)号：US11476245B2
公开(公告)日：2022-10-18
申请号：US15771245
申请日：2016-11-14
Applicant: CAVENDISH KINETICS, INC.
Inventor： Roberto Gaddi , James Douglas Huffman , Chenhui Niu , Ray Parkhurst
Abstract: 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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公开(公告)号：US10594024B2
公开(公告)日：2020-03-17
申请号：US16247529
申请日：2019-01-14
Applicant: CAVENDISH KINETICS, INC.
Inventor： Ray Parkhurst , Paul Anthony Tornatta, Jr.
Abstract: 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.
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公开(公告)号：US10224614B2
公开(公告)日：2019-03-05
申请号：US15301277
申请日：2015-04-02
Applicant: CAVENDISH KINETICS, INC.
Inventor： Ray Parkhurst , Paul Anthony Tornatta, Jr.
Abstract: 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.
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公开(公告)号：US10038415B2
公开(公告)日：2018-07-31
申请号：US15516995
申请日：2015-09-23
Applicant: CAVENDISH KINETICS, INC.
Inventor： Ray Parkhurst
CPC classification number: H03F1/56 , H03F1/565 , H03F3/195 , H03F3/213 , H03F3/245 , H03F2200/102 , H03F2200/387 , H03F2200/451 , H03H7/40 , H03H2007/013
Abstract: 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.
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