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    • 9. 发明申请
    • ELECTROMAGNETIC WAVE TRANSMISSION SHEET AND ELECTROMAGNETIC WAVE TRANSMISSION DEVICE
    • 电磁波传输片和电磁波传输装置
    • US20150022021A1
    • 2015-01-22
    • US14375655
    • 2012-12-20
    • NEC CORPORATION
    • Wataru Hattori
    • H02J17/00
    • H02J50/00H02J17/00H02J50/05H02J50/10H02J50/40H02J50/70H04B13/00
    • An edge portion which defines a planar shape has two long end sides (108a, 108b) which extend in parallel to each other, and two short end sides (107, 109) which have parallel portions extending in parallel to each other. The two long end sides and the two short end sides are reflection terminals. The parallel portion of the first short end side (107) includes a first portion (107a) and a second portion (107b). The positions of the antinodes of a first standing wave formed by a traveling wave directed toward the first portion (107a) and a reflected wave of the traveling wave and a second standing wave formed by a traveling wave directed toward the second portion (107b) and a reflected wave of the traveling wave in a direction substantially parallel to the long end sides (108a, 108b) are deviated by 1/4 of the wavelength of an electromagnetic wave propagating through an electromagnetic wave transmission sheet.
    • 限定平面形状的边缘部分具有彼此平行延伸的两个长边侧面(108a,108b)和具有彼此平行延伸的平行部分的两个短端侧(107,109)。 两个长端侧和两个短端是反射端子。 第一短端侧(107)的平行部分包括第一部分(107a)和第二部分(107b)。 由朝向第一部分(107a)的行波形成的第一驻波的波腹的位置和行进波的反射波和由朝向第二部分(107b)的行波形成的第二驻波,以及 在大致平行于长边侧(108a,108b)的方向上的行波的反射波偏离通过电磁波传播片传播的电磁波的波长的1/4。
    • 10. 发明申请
    • TRANSDUCER ARRANGEMENT
    • 传感器布置
    • US20140355388A1
    • 2014-12-04
    • US14371089
    • 2013-01-07
    • BAE SYSTEMS Gardens
    • Lionel William John KentJohn Martin BagshawDuncan Peter Rowe
    • H04R17/00H04R31/00
    • H04R17/00B06B3/00H01L41/107H04B11/00H04B13/00H04R31/00Y10T29/49005
    • There is disclosed a transducer apparatus for acoustic communications through a substrate at a predetermined centre frequency, the apparatus comprising: —an active piezoelectric element for generating an acoustic signal; an intermediate layer, having a surface for accommodating the piezoelectric element, and having a first array of protrusions on a surface opposite the surface for accommodating the piezoelectric element; and a second array of protrusions at the substrate, wherein the active piezoelectric element is mounted onto the intermediate layer, and the intermediate layer is secured in position relative to the substrate such that the first array of protrusions faces the second array of protrusions such that the acoustic signal may propagate through the first and second arrays. There are further disclosed a method of mounting such an apparatus and a plate suitable for use in the transducer apparatus.
    • 公开了一种用于以预定中心频率通过基板进行声学通信的换能器装置,该装置包括: - 用于产生声信号的有源压电元件; 中间层,具有用于容纳压电元件的表面,并且在与表面相对的表面上具有第一阵列的突起,用于容纳压电元件; 以及在所述衬底处的第二阵列突起,其中所述有源压电元件安装在所述中间层上,并且所述中间层相对于所述衬底固定在适当位置,使得所述第一突起阵列面向所述第二突起阵列, 声信号可以通过第一和第二阵列传播。 还公开了一种安装适用于换能器装置的这种装置和板的方法。