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公开(公告)号：US12052006B2
公开(公告)日：2024-07-30
申请号：US17581815
申请日：2022-01-21
发明人： Sunil Kapoor , Aaron Logan , Hyungjoon Kim , Yaswanth Rangineni , Karl Leeser
CPC分类号： H03H1/0007 , H01J37/32183 , H01J37/32724 , H02M1/44 , H01J2237/3321
摘要： A mutually induced filter for filtering radio frequency (RF) power from signals supplied to a load is described. The mutually induced filter includes a first portion connected to a first load element of the load for filtering RF power from one of the signals supplied to the first load element. The load is associated with a pedestal of a plasma chamber. The mutually induced filter further includes a second portion connected to a second load element of the load for filtering RF power from another one of the signals supplied to the second load element. The first and second portions are twisted with each other to be mutually coupled with each other to further facilitate a coupling of a resonant frequency associated with the first portion to the second portion.
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公开(公告)号：US20240250664A1
公开(公告)日：2024-07-25
申请号：US18502145
申请日：2023-11-06
发明人： HYUNG GUN MA , DONG KYU LEE , JI WOONG KIM
CPC分类号： H03H11/12 , G06F3/0418 , G06F3/0446
摘要： A band pass filter circuit includes an amplifier circuit having a first input terminal to receive a first analog signal; a second input terminal to receive a second analog signal; first and second output terminals; capacitors; and switches. In a first switching mode, the switches are controlled so that the amplifier circuit and a first group of the capacitors connected between the input and output terminals operate as a first band pass filter filtering the first and second analog signals in a differential mode. In a second switching mode, the switches are controlled so that the amplifier circuit and second and third groups of the capacitors form second band pass filters filtering each of the first and second analog signals in a single-ended mode.
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公开(公告)号：US20240250662A1
公开(公告)日：2024-07-25
申请号：US18420833
申请日：2024-01-24
发明人： Atsushi TANAKA
CPC分类号： H03H9/19 , H03B5/04 , H03H9/0557 , H03H9/1021
摘要： A vibrator device includes: a vibrator; and a circuit device disposed apart from the vibrator, in which the circuit device includes a drive circuit configured to drive the vibrator, a temperature sensor configured to generate a temperature signal corresponding to a detected temperature, a temperature compensation circuit configured to compensate for temperature characteristics of a drive state of the vibrator based on the temperature signal, a heat source circuit configured to operate in a first state or in a second state in which current consumption is different from current consumption in the first state, and a transient response compensation circuit configured to compensate for, when the first state and the second state of the heat source circuit are switched, a difference between a transient response of a temperature detected by the temperature sensor and a transient response of a temperature of the vibrator.
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公开(公告)号：US20240250661A1
公开(公告)日：2024-07-25
申请号：US18627897
申请日：2024-04-05
发明人： Takashi YAMANE , Hisashi YAMAZAKI
CPC分类号： H03H9/105 , H03H3/02 , H03H9/02031 , H03H9/02157 , H03H9/02228 , H03H9/0523 , H03H9/13 , H03H9/173 , H03H9/176 , H03H2003/021
摘要： An acoustic wave device includes a first substrate, a piezoelectric layer including one main surface facing the first substrate and another main surface facing a direction opposite to the one main surface, a functional electrode on at least one of the one and the other main surfaces, and a second substrate including a first main surface facing the other main surface of the piezoelectric layer, a second main surface facing a direction opposite to the first main surface, and a through-hole penetrating from the first main surface to the second main surface. An angle at which a side surface of the through-hole is inclined from the second main surface toward the first main surface is equal to or more than about 0° and equal to or less than about 5° based on a normal line with respect to the second main surface.
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公开(公告)号：US20240250660A1
公开(公告)日：2024-07-25
申请号：US18625528
申请日：2024-04-03
发明人： Go YAMASHITA
CPC分类号： H03H9/08 , H03H9/02102 , H03H9/0552 , H03H9/1021 , H03H9/19
摘要： A quartz crystal resonator includes a quartz crystal resonator element, a thermistor, and a package base having a first principal surface and a second principal surface having an opposed surface relationship with each other, the quartz crystal resonator element is mounted on the first principal surface side, the thermistor is housed in a recessed section of the second principal surface side of the package base, a plurality of electrode terminals connected to the quartz crystal resonator element or the thermistor is disposed on the second principal surface side of the package base, and a distance in a first direction perpendicular to the first principal surface from a mounting surface of the electrode terminals to the thermistor is equal to or longer than 0.05 mm.
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公开(公告)号：US20240250659A1
公开(公告)日：2024-07-25
申请号：US18583235
申请日：2024-02-21
申请人： Soitec
CPC分类号： H03H9/02866 , H03H3/08 , H03H9/02574 , H03H9/02661 , H03H9/145 , H03H9/25 , H03H9/6489
摘要： A surface acoustic wave device comprising a base substrate, a piezoelectric layer and an electrode layer in between the piezoelectric layer and the base substrate, a comb electrode formed on the piezoelectric layer comprising a plurality of electrode means with a pitch p, defined asp=A, with A being the wavelength of the standing acoustic wave generated by applying opposite potentials to the electrode layer and comb electrode, wherein the piezoelectric layer comprises at least one region located in between the electrode means, in which at least one physical parameter is different compared to the region underneath the electrode means or fingers. A method of fabrication for such surface acoustic wave device is also disclosed. The physical parameter may be thickness, elasticity, doping concentration of Ti or number of protons obtained by proton exchange.
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公开(公告)号：US20240250435A1
公开(公告)日：2024-07-25
申请号：US18157202
申请日：2023-01-20
发明人： Joji Fujiwara , Motoyuki Tajima , Rei Goto , Yiliu Wang
CPC分类号： H01Q9/0485 , H01Q9/24 , H03H9/6483
摘要： A filter assembly operating at wider passband with an enhanced reflection coefficient is provided herein. In certain embodiments, the filter assembly comprises a first filter configured to allow signals received via an antenna node to pass at a first passband, the first filter including a plurality of resonators connected in series and parallel arms, the plurality of resonators of the first filter including a first type of resonator configured to broaden the first passband, at least a series resonator nearest to the antenna node or a shunt resonator nearest to the antenna node among the plurality of resonators of the first filter being a second type of resonator configured to improve reflection characteristics at a stopband of the first filter, and a second filter configured to allow the signals received via the antenna node to pass at a second passband using the second type of resonators.
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公开(公告)号：US20240247935A1
公开(公告)日：2024-07-25
申请号：US18419614
申请日：2024-01-23
发明人： Norifumi SHIMIZU
CPC分类号： G01C19/56 , H03H9/0557 , H03H9/1014 , H03H9/215
摘要： A vibrator device includes a vibration element, a circuit element configured to drive the vibration element, and a package that accommodates the vibration element and the circuit element. The package includes a mounting surface having a rectangular shape in a plan view and a plurality of external terminals arranged at the mounting surface, the plurality of external terminals include a corner terminal disposed at a corner of the mounting surface and a side terminal disposed at a side of the mounting surface, and an area of the corner terminal is larger than an area of the side terminal.
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公开(公告)号：USRE50054E1
公开(公告)日：2024-07-23
申请号：US17845564
申请日：2022-06-21
发明人： Markus Schnell , Manfred Lutzky , Markus Lohwasser , Markus Schmidt , Marc Gayer , Michael Mellar , Bernd Edler , Markus Multrus , Gerald Schuller , Ralf Geiger , Bernhard Grill
IPC分类号： G01L19/14 , G10L19/02 , G10L19/022 , G10L25/45 , H03H17/02 , G10L21/038
CPC分类号： G10L19/0204 , G10L19/022 , G10L25/45 , H03H17/0266 , G10L21/038
摘要： An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
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公开(公告)号：US20240243731A1
公开(公告)日：2024-07-18
申请号：US18559562
申请日：2022-11-08
发明人： Zhijian CHEN , Bin LI , Guangyin FENG , Shan GAO , Zhaohui WU
CPC分类号： H03H11/0472 , H03F3/45475 , H03H11/1204 , H03F2200/261 , H03F2200/375
摘要： A calibration method and a tuning method for an on-chip differential active RC filter are provided. The calibration method comprises: obtaining zero-crossing time of a differential signal outputted by a single-pole point real number filter by analyzing the single-pole point real number filter; setting a reference clock period according to the relationship between the zero-crossing time and the bandwidth of the single-pole point real number filter, and setting a calibration working time sequence according to the reference clock period; and scanning an RC configuration of an RC array according to the calibration working time sequence to realize calibration of the RC array.
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