公开(公告)号：US20240243727A1

公开(公告)日：2024-07-18

申请号：US18620535

申请日：2024-03-28

申请人： Murata Manufacturing Co., Ltd.

发明人： Douglas JACHOWSKI ,  Greg DYER

IPC分类号： H03H9/56 ,  H03H3/02 ,  H03H9/02 ,  H03H9/13 ,  H03H9/17

CPC分类号： H03H9/568 ,  H03H3/02 ,  H03H9/02031 ,  H03H9/02228 ,  H03H9/132 ,  H03H9/174 ,  H03H9/176 ,  H03H2003/023

摘要： Radio frequency filters are disclosed. A bandpass filter is discloses that includes one first bulk acoustic resonator on a first chip including a first piezoelectric layer having an LN-equivalent thickness less than or equal to 535 nm; a second bulk acoustic resonator on a second chip including a second piezoelectric layer having a thickness greater than the LN-equivalent thickness of the piezoelectric layer on the first chip; and a circuit card coupled to the first chip and the second chip and that electrically connects the first chip to the second chip.

公开(公告)号：US20240243719A1

公开(公告)日：2024-07-18

申请号：US18622920

申请日：2024-03-30

申请人： QXONIX, INC.

发明人： DARIUSZ BURAK ,  KEVIN J. GRANNEN ,  JACK LENELL

IPC分类号： H03H9/02 ,  H03H3/02 ,  H03H9/13 ,  H03H9/17 ,  H03H9/205 ,  H03H9/54 ,  H03H9/56

CPC分类号： H03H9/02259 ,  H03H3/02 ,  H03H9/02015 ,  H03H9/0207 ,  H03H9/02102 ,  H03H9/0211 ,  H03H9/02157 ,  H03H9/13 ,  H03H9/131 ,  H03H9/17 ,  H03H9/173 ,  H03H9/175 ,  H03H9/205 ,  H03H9/54 ,  H03H9/568 ,  H03H2003/021 ,  H03H2009/02165

摘要： Techniques for improving acoustic wave devices are disclosed, including filters, oscillators and systems that may include such devices. A first piezoelectric layer having a piezoelectrically excitable resonance mode may be provided. A second piezoelectric layer may also be provided. The first piezoelectric layer and the second piezoelectric layer may have respective thicknesses so that the acoustic wave device has a resonant frequency. A temperature compensating layer may be included. A substrate may be provided.

公开(公告)号：US20240243716A1

公开(公告)日：2024-07-18

申请号：US18531065

申请日：2023-12-06

申请人： Skyworks Solutions, Inc.

发明人： Li Ann Koo ,  Takashi Inoue ,  Vivian Sing Zhi Lee ,  Ping Yi Tan

IPC分类号： H03H3/08 ,  B23K26/362 ,  H03H9/02 ,  H03H9/05 ,  H03H9/10 ,  H03H9/25

CPC分类号： H03H3/08 ,  B23K26/362 ,  H03H9/02559 ,  H03H9/02622 ,  H03H9/059 ,  H03H9/1064 ,  H03H9/1092 ,  H03H9/25 ,  G01N2291/0423 ,  H01L2224/16

摘要： Laser-marked packaged surface acoustic wave devices are provided. The laser-marked packaged surface acoustic wave device may include a package structure encapsulating a surface acoustic wave device on a first side of a piezoelectric substrate. The opposite side of the piezoelectric substrate can be directly marked using a laser. The laser may be a deep ultraviolet laser. By directly marking the piezoelectric substrate itself, the use of a separate marking film can be avoided, making the packaged surface acoustic wave device thinner. When the laser has a wavelength readily absorbed by the piezoelectric substrate, a relatively shallow marking may be made in the piezoelectric substrate. The markings can extend less than 1 micrometer into the piezoelectric substrate, so as not to affect the structural integrity of the piezoelectric substrate or the operation of the packaged surface acoustic wave device.

公开(公告)号：US20240243036A1

公开(公告)日：2024-07-18

申请号：US18153663

申请日：2023-01-12

申请人： QUALCOMM Incorporated

发明人： Je-Hsiung LAN ,  Jonghae KIM ,  Ranadeep DUTTA

IPC分类号： H01L23/48 ,  H01L21/768 ,  H01L23/522 ,  H03H7/01

CPC分类号： H01L23/481 ,  H01L21/76898 ,  H01L23/5223 ,  H01L23/5227 ,  H03H7/0115 ,  H03H7/0153 ,  H03H2210/025

摘要： Disclosed is a cavity embedded tunable filter integrated with high-quality and high capacitance tuning ratio varactor, metal-insulator-metal (MIM) capacitors, and 3D inductors with through alumina ceramic substrate vias. The varactor and the MIM capacitor die is embedded into a blind alumina cavity (BAC) of an alumina ceramic substrate.

公开(公告)号：US20240238603A1

公开(公告)日：2024-07-18

申请号：US18414155

申请日：2024-01-16

申请人： The Regents of the University of California

发明人： Aydin Babakhani ,  Iman Habibagahi

IPC分类号： A61N1/378 ,  A61N1/372 ,  H02J50/10 ,  H02J50/20 ,  H03H7/38

CPC分类号： A61N1/3787 ,  A61N1/37223 ,  H02J50/10 ,  H02J50/20 ,  H03H7/38

摘要： Systems and methods for a dual-input double-tuned transmitter (Tx) configured to wirelessly power and control a plurality of implantable stimulators using radio frequency (RF) signals in accordance with embodiments of the invention are illustrated. One embodiment includes a transmitter, where the transmitter includes a matching network configured to isolate two input signals of different frequencies, wherein the matching network includes a lumped element frequency trap comprising at least one inductor and a plurality of capacitors. The transmitter further includes a Tx coil, wherein the Tx coil is configured to transmit two RF signals at the frequencies of the input signals with a difference in frequency by a factor of 10% or more.

公开(公告)号：US12041430B2

公开(公告)日：2024-07-16

申请号：US17701028

申请日：2022-03-22

申请人： YAMAHA CORPORATION

发明人： Kenji Ishizuka ,  Kenichi Tamiya

IPC分类号： H04R3/04 ,  H03H17/06 ,  H04R29/00

CPC分类号： H04R3/04 ,  H04R29/008 ,  H03H17/06

摘要： In a control method of controlling a frequency response of a filter for processing an audio signal, the frequency response is defined by an amplitude characteristic and a phase characteristic. The control method includes: acquiring a target amplitude characteristic, a target phase characteristic, and a latency value; obtaining a first frequency response in accordance with the target amplitude characteristic and the target phase characteristic; obtaining a second frequency response by modifying the first frequency response so that a latency of the second frequency response satisfies the latency value; and obtaining a third frequency response to be set for the filter by correcting the second frequency response, the second frequency response being corrected so as to reduce a difference between (i) an amplitude characteristic of the second frequency response and (ii) the target amplitude characteristic.

公开(公告)号：US12040924B1

公开(公告)日：2024-07-16

申请号：US18172913

申请日：2023-02-22

申请人： Silicon Laboratories Inc.

发明人： Hendricus De Ruijter ,  Robert Gorday

IPC分类号： H04L27/22 ,  H03H7/00 ,  H04L27/233

CPC分类号： H04L27/2334 ,  H04L27/2335

摘要： A cluster correlator may be configured with: a first stage comprising a set of first correlators to correlate samples of an input signal with a first predetermined pattern and output an output sample, the set of first correlators to output a sample cluster corresponding to the output sample of the set of first correlators during a switching cycle of the first stage; a filter coupled to an output of the first stage to receive the sample cluster and to produce a processed output sample based on the sample cluster; and a second stage comprising at least one second correlator to receive a processed output sample from the filter and correlate the processed output sample with a second predetermined pattern, and output one or more correlation outputs during a switching cycle of the second stage.

公开(公告)号：US12040783B2

公开(公告)日：2024-07-16

申请号：US17956810

申请日：2022-09-29

申请人： Murata Manufacturing Co., Ltd.

发明人： Bryant Garcia ,  Greg Dyer

IPC分类号： H03H9/56 ,  H03H9/13 ,  H03H9/17

CPC分类号： H03H9/568 ,  H03H9/13 ,  H03H9/17

摘要： An acoustic resonator device includes a diaphragm a diaphragm comprising a portion of a piezoelectric plate spanning a cavity. A conductor pattern on a surface of the piezoelectric plate includes an interdigital transducer (IDT) with a first busbar, a second busbar, and a plurality of interleaved IDT fingers extending alternately from the first and second busbars. Overlapping portions of the plurality of interleaved fingers are on the diaphragm. The conductor pattern also includes a first reflector element on the diaphragm proximate and parallel to a first IDT finger, and a second reflector element on the diaphragm proximate and parallel to a last IDT finger. A center-to-center spacing of the first reflector element and the first IDT finger and the second reflector element and the last IDT finger is greater than an average center-to-center spacing between all adjacent pairs of IDT fingers.

公开(公告)号：US12040782B2

公开(公告)日：2024-07-16

申请号：US17557090

申请日：2021-12-21

申请人： Murata Manufacturing Co., Ltd.

发明人： Masakazu Mimura ,  Hiroshi Muranaka

IPC分类号： H03H9/56 ,  H03H9/13 ,  H03H9/205

CPC分类号： H03H9/568 ,  H03H9/13 ,  H03H9/205

摘要： A composite filter device includes a piezoelectric substrate made of LiNbO3, a first filter on the piezoelectric substrate, and including acoustic wave resonators, and a second filter including one end connected in common to one end of the first filter, wherein a pass band of the second filter is in a frequency band higher than a pass band of the first filter, and bulk wave radiation frequencies of all of the first and second resonators of the first filter are higher than the pass band of the second filter.

公开(公告)号：US12040777B2

公开(公告)日：2024-07-16

申请号：US17440158

申请日：2020-03-27

申请人： RF360 Singapore Pte. Ltd

发明人： Matthias Pernpeintner

IPC分类号： H03H9/145 ,  H03H9/02 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/145 ,  H03H9/02637 ,  H03H9/25 ,  H03H9/6483

摘要： A SAW transducer and a SAW resonator are proposed composed of consecutively arranged unit cells of length L. Slight geometry or material variations such as variations of the metallization ration or the unit cell length L affecting the pitch) between these unit cells result in improved spurious mode suppression while the main mode performance is unaffected.