公开(公告)号：US11606087B2

公开(公告)日：2023-03-14

申请号：US17078658

申请日：2020-10-23

申请人： pSemi Corporation

发明人： Ronald Eugene Reedy ,  Dan William Nobbe ,  Tero Tapio Ranta ,  Cheryl V. Liss ,  David Kovac

IPC分类号： H03K17/16 ,  H03M1/10 ,  H01F21/12 ,  H03H7/01 ,  H03K17/10 ,  H03K17/687 ,  H01G7/00 ,  H03H7/38 ,  H03H11/28 ,  H01L23/522 ,  H01L27/06 ,  H01L27/12 ,  H01L49/02 ,  H03J3/20 ,  H01G4/002 ,  H03M1/80

摘要： Methods and apparatuses for use in tuning reactance are described. Open loop and closed loop control for tuning of reactances are also described. Tunable inductors and/or tunable capacitors may be used in filters, resonant circuits, matching networks, and phase shifters. Ability to control inductance and/or capacitance in a circuit leads to flexibility in operation of the circuit, since the circuit may be tuned to operate under a range of different operating frequencies.

公开(公告)号：US20230050119A1

公开(公告)日：2023-02-16

申请号：US17873624

申请日：2022-07-26

申请人： MKS Instruments, Inc.

发明人： Linnell MARTINEZ ,  Dinh-Vuong LE ,  Alexander JURKOV ,  Jaechul JUNG ,  Aaron RADOMSKI

IPC分类号： H01J37/32 ,  H03H11/28

摘要： A power supply system includes a RF generator, a matching network, and a control module. The matching network includes at least one mechanically variable impedance element and at least one electrically variable impedance element. The control module is coupled to the matching network and configured to generate one or more signals to adjust at least one of an impedance of the mechanically variable impedance element or an impedance of the electrically variable impedance element to vary an impedance match between the generator and a load. In other examples, a hybrid variable impedance module includes at least one mechanically variable impedance element, at least one electrically variable impedance element, and a control module. The control module is configured to generate one or more signals to adjust at least one of an impedance of the mechanically variable impedance element or an impedance of the electrically variable impedance element.

公开(公告)号：US20230043171A1

公开(公告)日：2023-02-09

申请号：US17965792

申请日：2022-10-14

申请人： TRUMPF Huettinger GmbH + Co. KG

发明人： Birger Nordmann

IPC分类号： H01J37/32 ,  H03H11/28

摘要： An impedance matching circuit includes a radiofrequency terminal and a series circuit connected to the radiofrequency terminal, wherein the series circuit comprises at least one reactance and at least one switching element having a drive input. A drive circuit is connected to the drive input and a coupler is connected to the drive circuit so as to an enable signal input. The impedance matching circuit enables short switching times and low losses in the at least one switching element.

公开(公告)号：US20220337227A1

公开(公告)日：2022-10-20

申请号：US17717167

申请日：2022-04-11

申请人： Realtek Semiconductor Corp.

发明人： Ya-Hsuan Sung

IPC分类号： H03H11/28

摘要： An impedance control circuit includes a configuration channel interface, three resistors and two transistors. The configuration channel interface is coupled to a universal serial bus device. The first resistor has a first terminal coupled to the configuration channel interface. The first transistor has a first terminal coupled to a second terminal of the first resistor, and a second terminal coupled to a system voltage terminal. The second transistor has a first terminal coupled to the second terminal of the first resistor, and a second terminal coupled to the system voltage terminal. The second resistor has a first terminal coupled to the second terminal of the first resistor, and a second terminal coupled to a control terminal of the second transistor. The third resistor has a first terminal coupled to the second terminal of the second resistor, and a second terminal coupled to the system voltage terminal.

公开(公告)号：US20220200579A1

公开(公告)日：2022-06-23

申请号：US17212988

申请日：2021-03-25

申请人： Huazhong University of Science and Technology

发明人： Qi QIU ,  Meng ZHAN ,  Yifan HUANG ,  Yayao ZHANG

IPC分类号： H03H11/28 ,  H03H11/04

摘要： A method for predicting impedance of a voltage source converter under variable operating points is disclosed, pertaining to the field of analysis of small signal stability in an electrical power system. When the parameters and topology of the control system are fully unknown, the theoretical expression of impedance cannot be applied to a voltage source converter, and impedance is highly dependent on operating points. A fully decoupled impedance model disclosed is constructed in this disclosure. The fully decoupled impedance model decomposes the impedance into a system parameter vector and an operating point vector, and then identifies parameters through impedance measurement, thereby realizing impedance prediction in a voltage source converter grid-connected system under variable operating points when the parameters and topology of the control system are fully unknown, expanding the scope of application of the impedance method and laying a foundation for using the impedance method to analyze small signal stability in engineering practices.

公开(公告)号：US11356235B2

公开(公告)日：2022-06-07

申请号：US16616192

申请日：2018-05-24

申请人： THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

发明人： Besma Smida ,  Danilo Erricolo ,  Seiran Khaledian ,  Farhad Farzami

IPC分类号： H04L5/14 ,  H01P1/38 ,  H03H11/28 ,  H04B1/525 ,  H04B1/58

摘要： An analog self-interference cancellation technique for In-Band Full-Duplex (IBFD) systems generates an inherent secondary self-interference (SI) signal of a circulator and uses that signal to cancel a primary SI signal leaked from a transmitter port within a communication device. The communication device manipulates the phase and angle of this secondary SI, using an adjustable Impedance Mismatch Terminal (IMT) circuit. The result is an efficient SI cancellation technique in the analog domain, which uses the circulator inherent SI signals.

公开(公告)号：US11329632B2

公开(公告)日：2022-05-10

申请号：US16994102

申请日：2020-08-14

申请人： Mitsubishi Electric Corporation

发明人： Yoshiaki Morino ,  Mitsuhiro Shimozawa

IPC分类号： H03H11/28 ,  H03B5/08 ,  H03F3/19

摘要： One inductor and another inductor are magnetically coupled to each other. A variable current source controls the current flowing in the one inductor. By controlling the current flowing in the one inductor, the inductance value of the other inductor is made variable.

公开(公告)号：US11258440B2

公开(公告)日：2022-02-22

申请号：US16524710

申请日：2019-07-29

申请人： pSemi Corporation

发明人： Tero Tapio Ranta

IPC分类号： H03K17/16 ,  H03M1/10 ,  H01F21/12 ,  H03H7/01 ,  H03K17/10 ,  H03K17/687 ,  H01G7/00 ,  H03H7/38 ,  H03H11/28 ,  H01L23/522 ,  H01L27/06 ,  H01L27/12 ,  H01L49/02 ,  H03J3/20 ,  H01G4/002 ,  H03M1/80

摘要： A method and apparatus for use in a digitally tuning a capacitor in an integrated circuit device is described. A Digitally Tuned Capacitor DTC is described which facilitates digitally controlling capacitance applied between a first and second terminal. In some embodiments, the first terminal comprises an RF+ terminal and the second terminal comprises an RF− terminal. In accordance with some embodiments, the DTCs comprise a plurality of sub-circuits ordered in significance from least significant bit (LSB) to most significant bit (MSB) sub-circuits, wherein the plurality of significant bit sub-circuits are coupled together in parallel, and wherein each sub-circuit has a first node coupled to the first RF terminal, and a second node coupled to the second RF terminal. The DTCs further include an input means for receiving a digital control word, wherein the digital control word comprises bits that are similarly ordered in significance from an LSB to an MSB.

公开(公告)号：US20210351765A1

公开(公告)日：2021-11-11

申请号：US17380104

申请日：2021-07-20

申请人： SKYWORKS SOLUTIONS, INC.

发明人： David Steven Ripley

IPC分类号： H03H11/28 ,  H03F3/45 ,  H03F1/56 ,  H03F3/20 ,  H01P5/18

摘要： Systems and methods for a tunable impedance are provided. A tunable impedance includes a transistor assembly having two terminals and a control input. The transistor assembly includes one or more transistors electrically connected between the two terminals to provide a first impedance between the two terminals, based upon a control signal. One or more replica transistors react to the control signal in a similar fashion as the transistor assembly, to provide a replica impedance based upon the control signal. A control circuit is configured to generate the control signal based upon a voltage across the replica transistor(s) and/or a current through the replica transistor(s).

公开(公告)号：US11120971B2

公开(公告)日：2021-09-14

申请号：US16685698

申请日：2019-11-15

申请人： Reno Technologies, Inc.

发明人： Chingping Huang ,  Michael Gilliam Ulrich ,  Tomislav Lozic ,  Ronald Anthony Decker ,  Imran Ahmed Bhutta ,  Bala Kandampalayam

IPC分类号： H01J7/24 ,  H05B31/26 ,  H01J37/32 ,  H01L21/3213 ,  H01L21/311 ,  H01L21/285 ,  H03H11/28 ,  H01L21/02

摘要： In one embodiment, the present disclosure is directed to a method for performing diagnostics on a matching network that utilizes an electronically variable capacitor (EVC). According to the method, all the discrete capacitors of the EVC are switched out. At a first node, a parameter associated with a current flowing between a power supply and one or more of the switches of the discrete capacitors is measured. The method then switches in, one at a time, each discrete capacitor of the EVC. Upon the switching in of each discrete capacitor, the method remeasures the parameter at the first node and determines whether a change to the parameter at the first node is within a predetermined range to determine whether the corresponding switch, driver circuit, or filter of the discrete capacitor most recently switch in has failed.