公开(公告)号：US12107543B2

公开(公告)日：2024-10-01

申请号：US17768232

申请日：2021-07-30

Applicant: DAISHINKU CORPORATION

Inventor： Takuya Kojo

IPC: H03B5/04 ,  H03B5/32 ,  H03L1/02 ,  H03L1/04

CPC classification number: H03B5/04 ,  H03B5/32 ,  H03L1/028 ,  H03L1/04

Abstract: An oven-controlled crystal oscillator according to one or more embodiments may include a core section hermetically encapsulated in a package for thermal insulation, wherein the core section is supported by the package via a core substrate, and the core section has a layered structure in which at least an oscillation IC, a crystal resonator and a heater IC are laminated in sequence.

公开(公告)号：US11785705B2

公开(公告)日：2023-10-10

申请号：US16950691

申请日：2020-11-17

Applicant: Palo Alto Research Center Incorporated

Inventor： Yunda Wang

IPC: H03L1/02 ,  H03L1/04 ,  H05K1/02 ,  H05K7/20

CPC classification number: H05K1/0212 ,  H03L1/028 ,  H03L1/04 ,  H05K1/0203 ,  H05K1/0272 ,  H05K7/20218 ,  H05K2201/064

Abstract: A device may include a temperature controlled chamber. The temperature controlled chamber may be coupled to a plurality of strengthening coated capillary tubes. The strengthening coated capillary tubes may support the temperature controlled chamber and provide thermal insulation to the temperature controlled chamber.

公开(公告)号：US11716054B2

公开(公告)日：2023-08-01

申请号：US17620829

申请日：2020-05-28

Applicant: ECOLE NATIONALE SUPERIEURE DE MECANIQUE ET DES MICROTECHNIQUES—ENSMM ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE—CNRS

Inventor： Thomas Baron ,  Gilles Martin ,  Valérie Soumann ,  Yannick Gruson

IPC: H03B5/32 ,  H03B1/02 ,  H03L1/02 ,  H03L1/04 ,  H03H9/02 ,  H03H9/08

CPC classification number: H03B5/32 ,  H03B1/02 ,  H03L1/02 ,  H03L1/04 ,  H03H9/02448 ,  H03H9/08

Abstract: A temperature-controlled RF resonator. The resonator includes an insulating thermal enclosure within which are implemented: at least one resonant element configured to deliver an RF output signal when supplied with an RF input signal; at least one heating element configured to supply thermal energy within the thermal enclosure when the at least one heating element is powered by an LF electric power signal; and at least one temperature sensor configured to deliver an LF electric measurement signal as a function of the temperature inside the thermal enclosure. Such an RF resonator has at least one input/output port crossing the insulating thermal enclosure and propagating at least: one signal from among the RF signals; and another signal from among the LF electric signals.

公开(公告)号：US20190222214A1

公开(公告)日：2019-07-18

申请号：US16363055

申请日：2019-03-25

Applicant: TXC CORPORATION

Inventor： CHIEN-WEI CHIANG ,  WAN-LIN HSIEH ,  CHIA-WEI CHEN ,  CHE-LUNG HSU ,  SHENG-HSIANG KAO ,  CHEN-YA WENG ,  CHIA-CHEN CHEN

IPC: H03L1/02 ,  H05K1/18 ,  H03L1/04 ,  G01K13/00 ,  H05K1/02 ,  H01L23/34

CPC classification number: H03L1/028 ,  G01K13/00 ,  H01L23/345 ,  H03L1/02 ,  H03L1/04 ,  H05K1/0212 ,  H05K1/0298 ,  H05K1/0306 ,  H05K1/181 ,  H05K1/184 ,  H05K2201/10075 ,  H05K2201/10151

Abstract: An oven controlled crystal oscillator consisting of heater-embedded ceramic package includes a substrate, a crystal package, a crystal blank, a metal lid, a first IC chip, and a cover lid. The crystal package is mounted on the substrate, and a central bottom of the crystal package is provided with the first IC chip. The crystal blank is mounted in the crystal package and sealed by the metal lid. The crystal package has an embedded heater layer establishing a symmetric thermal field with respect to the first IC chip and the crystal blank. Alternatively, a heater-embedded ceramic carrier substrate is arranged between the first IC chip and the crystal blank to establish a symmetric thermal field with respect to the first IC chip and the crystal blank. The cover lid is combined with the substrate to cover the crystal package and the metal lid.

公开(公告)号：US20190069390A1

公开(公告)日：2019-02-28

申请号：US15682843

申请日：2017-08-22

Applicant: Palo Alto Research Center Incorporated

Inventor： Yunda Wang

IPC: H05K1/02

CPC classification number: H05K1/0212 ,  H03L1/028 ,  H03L1/04 ,  H05K1/0203 ,  H05K1/0272 ,  H05K7/20218 ,  H05K2201/064

Abstract: A device may include a temperature controlled chamber. The temperature controlled chamber may be coupled to a plurality of strengthening coated capillary tubes. The strengthening coated capillary tubes may support the temperature controlled chamber and provide thermal insulation to the temperature controlled chamber.

公开(公告)号：US20180278235A1

公开(公告)日：2018-09-27

申请号：US15926571

申请日：2018-03-20

Applicant: Seiko Epson Corporation

Inventor： Tetsuya OTSUKI ,  Tsugio IDE

IPC: H03H9/215 ,  H03B5/32 ,  H03H3/007 ,  B81B3/00 ,  H03L1/02 ,  G01C19/56

CPC classification number: H03H9/215 ,  B81B3/0072 ,  B81B7/0048 ,  G01C19/56 ,  G01C19/5621 ,  H03B5/32 ,  H03H3/0076 ,  H03H9/02023 ,  H03H9/02102 ,  H03H9/02157 ,  H03H9/0509 ,  H03H9/0542 ,  H03H9/0547 ,  H03H9/1021 ,  H03H9/177 ,  H03H9/19 ,  H03L1/028 ,  H03L1/04

Abstract: A vibrator device includes a vibration element including a vibration portion and a fixed portion, a supporting member to which the fixed portion is attached to support the vibration element, and a first substrate to which the supporting member is attached, the supporting member includes a attaching portion attached to the first substrate, and A1≥A2 is satisfied in a case where an area of a rectangular region including the fixed portion is A1 and an area of a rectangular region including the attaching portion is A2 in a plan view seen from a thickness direction of the vibration element.

公开(公告)号：US20180198452A1

公开(公告)日：2018-07-12

申请号：US15916701

申请日：2018-03-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Kensaku ISOHATA ,  Takayuki KIKUCHI ,  Takemi YONEZAWA

IPC: H03L1/04 ,  H03L1/02 ,  H03B5/36

CPC classification number: H03L1/04 ,  H03B5/36 ,  H03L1/02 ,  H03L1/022 ,  H03L1/026 ,  H03L1/028

Abstract: An oscillator includes an oscillation source, multiple temperature control elements, and a controller adapted to perform control to suppress an increase in current consumed in one or more of the temperature control elements during at least part of a period from when operation of the oscillation source initiates to when the oscillation source reaches a specified temperature.

公开(公告)号：US20180191299A1

公开(公告)日：2018-07-05

申请号：US15740273

申请日：2015-07-27

Applicant: GUANGDONG DAPU TELECOM TECHNOLOGY CO., LTD.

Inventor： Yifeng WANG ,  Chaosheng LIU

IPC: H03B5/04 ,  H03H9/19 ,  H03H9/02 ,  H03B5/32

CPC classification number: H03B5/04 ,  H03B5/32 ,  H03H9/02102 ,  H03H9/19 ,  H03L1/04

Abstract: The present disclosure relates to the technical field of quartz crystal oscillators, and particularly, to a directly-heating oven controlled crystal oscillator. The surface of a wafer is provided with wires, two ends of each wire are respectively connected to one ends of support columns located inside a mounting space, and the other ends of the support columns located outside the mounting space are connected to a crystal pin. Accordingly, the wires on the surface of the wafer are connected to an external circuit by means of the support columns and the crystal pins, and the wires generate heat to heat the wafer after the wires are given a current by the external circuit.

公开(公告)号：US20180167072A1

公开(公告)日：2018-06-14

申请号：US15576848

申请日：2016-05-13

Applicant: NIHON DEMPA KOGYO CO., LTD.

Inventor： Tomoya YORITA

IPC: H03L1/04 ,  H03L5/00

CPC classification number: H03L1/04 ,  H03L1/026 ,  H03L1/028 ,  H03L5/00

Abstract: To provide an oscillator configured to output a frequency signal accurately reflecting a result of a temperature adjustment by a heater circuit. An oscillator outputs a frequency signal with a frequency preliminarily set. A crystal resonator connected to an oscillator circuit is housed inside a crystal resonator cover. Soldering this crystal resonator cover onto the base plate inside the container disposes the crystal resonator on the base plate inside the container. A heater circuit performs a temperature adjustment inside the container based on a temperature detected by a temperature detector. At this time, the crystal resonator cover that houses the crystal resonator is constituted of a phosphorus deoxidized copper.

公开(公告)号：US20180145694A1

公开(公告)日：2018-05-24

申请号：US15814951

申请日：2017-11-16

Applicant: Seiko Epson Corporation

Inventor： Takehiro YAMAMOTO ,  Masayuki ISHIKAWA

IPC: H03L1/02 ,  H03B5/36 ,  H03B5/04 ,  H03H9/19

CPC classification number: H03L1/025 ,  H03B5/04 ,  H03B5/362 ,  H03B5/368 ,  H03H9/0547 ,  H03H9/19 ,  H03L1/023 ,  H03L1/04

Abstract: An oscillation circuit includes an amplification circuit that causes a resonator to oscillate, and a variable capacitance circuit whose capacitance value is controlled on the basis of a control voltage. The variable capacitance circuit includes a first variable capacitive element in which an inflection point voltage in a change characteristic of a capacitance value for the control voltage is a first voltage, and a second variable capacitive element in which an inflection point voltage in a change characteristic of a capacitance value for the control voltage is a second voltage which is different from the first voltage. A capacitance value of the first variable capacitive element when the control voltage is the first voltage is different from a capacitance value of the second variable capacitive element when the control voltage is the second voltage.