Antenna device and electronic apparatus

    公开(公告)号:US09748636B2

    公开(公告)日:2017-08-29

    申请号:US14422636

    申请日:2013-08-21

    摘要: Provided is an antenna device that achieves good communication characteristics when incorporated into an electronic apparatus. The antenna device incorporated into an electronic apparatus and configured to communicate with an external device via an electromagnetic field signal comprises: a metal plate serving as a first electric conductor, being provided inside a casing of the electronic apparatus and facing the external device; an antenna substrate provided inside the casing of the electronic apparatus, and having an antenna coil inductively coupled to the external device and wound around thereon; and metal foil serving as a second electric conductor in sheet form, being provided inside the casing of the electronic apparatus, overlapping or being in contact with the metal plate serving as the first electric conductor, and at least partially overlapping a surface of the antenna substrate, the surface being opposite to a surface facing the external device.

    Capacitance device and resonance circuit
    8.
    发明授权
    Capacitance device and resonance circuit 有权
    电容器件和谐振电路

    公开(公告)号:US09337796B2

    公开(公告)日:2016-05-10

    申请号:US14251191

    申请日:2014-04-11

    摘要: To suppress changes in capacitance due to displacement between electrodes opposing each other across a dielectric layer, thereby allowing stable manufacturing of a capacitance device having a desired capacitance. A capacitance device is of a configuration including a dielectric layer, a first electrode formed on a predetermined surface of the dielectric layer, and a second electrode formed on a surface on the opposite side of the dielectric layer from the predetermined surface. The forms of the first and second electrodes are set so that even in the event that the first electrode is relatively displaced regarding position in a predetermined direction as to the second electrode, the area of the opposing-electrode region between the first electrode and to the second electrode is unchanged.

    摘要翻译: 为了抑制由电介质层彼此相对的电极之间的位移引起的电容变化,从而允许具有期望电容的电容器件的稳定制造。 电容器件具有包括电介质层,形成在电介质层的预定表面上的第一电极和形成在电介质层的与预定表面相对的表面上的表面上的第二电极的配置。 第一电极和第二电极的形状被设置成即使在第一电极相对于第二电极在预定方向上的位置相对位移的情况下,第一电极和第二电极之间的对置电极区域的面积 第二电极不变。

    VARIABLE CAPACITANCE ELEMENT, PACKAGED CIRCUIT, RESONANT CIRCUIT, COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, WIRELESS CHARGING SYSTEM, POWER SUPPLY APPARATUS, AND ELECTRONIC APPARATUS
    9.
    发明申请
    VARIABLE CAPACITANCE ELEMENT, PACKAGED CIRCUIT, RESONANT CIRCUIT, COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, WIRELESS CHARGING SYSTEM, POWER SUPPLY APPARATUS, AND ELECTRONIC APPARATUS 审中-公开
    可变电容元件,封装电路,谐波电路,通信设备,通信系统,无线充电系统,电源设备和电子设备

    公开(公告)号:US20150243442A1

    公开(公告)日:2015-08-27

    申请号:US14419136

    申请日:2013-07-29

    摘要: The present provides a variable capacitance element enabling a further reduction in capacitance variation among variable capacitance elements, and provides a packaged circuit including the variable capacitance element. A variable capacitance element is configured to include an element body unit, a compensation unit, a first external terminal for signals, a second external terminal for signals, external terminals for control, and external terminals for capacitance compensation. The compensation unit has second variable-capacitance capacitor units C9 to C 11, each including a second dielectric layer formed of a ferroelectric material, and is connected to the element body unit, and has a capacitance varying according to a control voltage signal.

    摘要翻译: 本发明提供了可变电容元件,其可以进一步减小可变电容元件之间的电容变化,并且提供包括可变电容元件的封装电路。 可变电容元件被配置为包括元件主体单元,补偿单元,用于信号的第一外部端子,用于信号的第二外部端子,用于控制的外部端子和用于电容补偿的外部端子。 补偿单元具有第二可变电容电容器单元C9至C11,每个包括由铁电材料形成的第二介电层,并连接到元件主体单元,并具有根据控制电压信号而变化的电容。

    Variable capacitance circuit, variable capacitance device, and resonance circuit and communication apparatus using the same

    公开(公告)号:US10083797B2

    公开(公告)日:2018-09-25

    申请号:US14898983

    申请日:2014-05-28

    发明人: Masayoshi Kanno

    IPC分类号: H01G7/06 H04B5/00

    CPC分类号: H01G7/06 H04B5/0075

    摘要: The present invention achieves a proper balance among multiple constituent bias resistors of a variable-capacitance circuit by using different resistance values for resistors located at specific positions and the other resistors, thereby reducing a response time while sufficiently blocking an alternating-current component. This variable-capacitance circuit is a variable-capacitance circuit for which variable-capacitance components (C1-C4), the capacitances of which change in accordance with a control voltage, are connected in series between terminals to which an alternating-current signal is applied, and multiple bias application paths for applying a bias voltage to each of the variable-capacitance components via resistance components (R1-R5) are formed, wherein, among resistance components (R1-R5), resistance components (R1, R5) connected to the terminals, to which the alternating current is applied, have different resistance values from the resistance values of the other resistance components (R2-R4).