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31.发明授权Linear active two-port network wherein nonlinear impedance characteristic at one port is reflected through predetermined angle at second port 失效线性有源双端口网络，其中一个端口的非线性阻抗特性通过第二端口预测角度反射
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公开(公告)号：US20240305274A1
公开(公告)日：2024-09-12
申请号：US18179482
申请日：2023-03-07
CPC分类号： H03H11/02 , H03K5/01 , H03K19/21 , H03K2005/00013
摘要： In some examples, an apparatus includes an isolating transformer and a grounding circuit. The isolating transformer has first and second coils separated by an isolation barrier, the first coil having first and second terminals. The grounding circuit is coupled to the first and second terminals. The grounding circuit is configured to couple the first and second terminals to a ground terminal during a first time period. The grounding circuit is also configured to decouple the first and second terminals from the ground terminal during a second time period.
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公开(公告)号：US11973495B2
公开(公告)日：2024-04-30
申请号：US18161802
申请日：2023-01-30
申请人： pSemi Corporation
发明人： Simon Edward Willard
IPC分类号： H04B1/48 , H03H11/02 , H03K17/687 , H04B1/44
CPC分类号： H03K17/6874 , H03H11/02 , H04B1/44 , H04B1/48
摘要： Methods and devices to address body leakage current generation and bias voltage distribution associated with body leakage current in an OFF state of a FET switch stack are disclosed. The devices include charge redistribution arrangements and bridge networks to perform coupling/decoupling to/from the FET switch stack. Detailed structures of such bridge networks are also described.
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公开(公告)号：US11936355B2
公开(公告)日：2024-03-19
申请号：US17452429
申请日：2021-10-27
发明人： Shou Matsumoto
CPC分类号： H03H11/02 , H03F3/245 , H04B1/44 , H03F2200/294 , H03F2200/451
摘要： A filter allows a transmission signal in a predetermined frequency band to pass from a second input-output terminal to a first input-output terminal and allows a reception signal in the predetermined frequency band to pass from the first input-output terminal to the second input-output terminal. A first common terminal of a first switch is connected to the second input-output terminal. A second terminal and a first terminal of the first switch are exclusively connectable to the first common terminal. A second common terminal of a second switch is connected to a ground terminal of the filter. A second selection terminal and a first selection terminal of the second switch are exclusively connected to the second common terminal. Of the first selection terminal and the second selection terminal, only the first selection terminal is connected to a ground with a reactive element interposed therebetween.
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公开(公告)号：US11901903B2
公开(公告)日：2024-02-13
申请号：US18070537
申请日：2022-11-29
申请人： PLEX Corporation
发明人： Malcolm W. McGeoch
CPC分类号： H03K3/45 , H01S3/09702 , H03H11/02 , H03K17/56 , H03K17/80 , H01S3/2256
摘要： A rectangular electrical pulse enters a transmission line structure with single pass transit time equal to ½ the duration of the pulse, open circuit at the extreme end and a switch at its center. After a delay equal to ¾ of the rectangular pulse duration the central switch is closed to couple the contents of the transmission line structure into another transmission line of half impedance. The output pulse maintains the initial voltage, but is of half the initial duration, and double the initial power.
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公开(公告)号：US11762487B2
公开(公告)日：2023-09-19
申请号：US17824347
申请日：2022-05-25
申请人： Wacom Co., Ltd.
IPC分类号： G06F3/038 , G06F3/0354 , H03H11/02
CPC分类号： G06F3/0383 , G06F3/03545 , H03H11/02
摘要： A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.
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公开(公告)号：US20230053736A1
公开(公告)日：2023-02-23
申请号：US17796612
申请日：2021-02-04
发明人： Yasuo KADOYA , Shinya MIZUTANI , Koji ARAI
摘要： A joining device includes: a first circuit in which a primary-side winding of a first transformer and a first capacitor are connected; a second circuit in which a primary-side winding of a second transformer and a second capacitor are connected; an electrode connected to secondary-side winding of the first transformer and secondary-side winding of the second transformer; and a charge switch configured to switch between energization/de-energization of the first and second capacitors from a power supply without the transformers being interposed. The first circuit has a first discharge switch and the second circuit has a second discharge switch. A method for manufacturing a joined object includes, by using the joining device, supplying an object to be joined to be sandwiched by the electrode; causing a current to flow through the electrode that sandwiches the object to be joined to join the object to be joined.
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公开(公告)号：US11533207B2
公开(公告)日：2022-12-20
申请号：US17050244
申请日：2019-04-24
发明人： Daniel Ryan , Wei Li
IPC分类号： H03H11/02 , H04L27/233 , H03H17/02 , H04L27/26
摘要： A radio receiver comprises a matched filter bank and a decision unit. The matched filter bank has a plurality of filter modules for generating correlation-strength data from a sampled radio signal, each filter module being configured to cross-correlate the sampled signal with data representing a respective filter sequence. The decision unit is configured to use the correlation-strength data to generate a sequence of decoded symbols from the sampled signal. The matched filter bank and/or decision unit are configured to determine the value of each symbol in the sequence in part based on the value of a respective earlier decoded symbol from the sequence of decoded symbols.
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公开(公告)号：US11482988B1
公开(公告)日：2022-10-25
申请号：US17349201
申请日：2021-06-16
申请人： SRC, Inc.
摘要： A system and method for tuning a transistor-based circuit. The system includes a negative impedance converter circuit having a capacitor, a first transistor, and a second transistor. As a current travels through the capacitor, the first transistor and the second transistor each sample voltage at the capacitor and invert the voltage at an input of the negative impedance converter circuit. The negative impedance converter circuit also has a third transistor in series with the capacitor. The third transistor has a base voltage. Changing the base voltage of the third transistor changes the voltage sampled by the first transistor and the second transistor.
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公开(公告)号：US11245386B2
公开(公告)日：2022-02-08
申请号：US14170248
申请日：2014-01-31
发明人： Daisuke Tokuda
IPC分类号： H03H11/02 , H03H7/01 , H01L23/522 , H04B1/04 , H01L23/64 , H01L23/66 , H04B1/18 , H01L25/16 , H01P1/201 , H01Q1/50 , H03H1/00 , H03H7/46
摘要： A high-frequency module includes a semiconductor chip device that is mounted on an external circuit substrate by wire bonding. A switch forming section, a power amplifier forming section and a low noise amplifier forming section, realized by a group of FETs, which are active elements, are formed in the semiconductor chip device. Flat plate electrodes, which form capacitors are formed in the semiconductor chip device. Conductor wires that connect the external circuit substrate and the semiconductor chip device function as inductors. A group of passive elements that includes inductors and capacitors is formed. As a result, a high-frequency module that can be reduced in size while still obtaining the required transmission characteristic is realized.
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