Wi-gig signal radiation via ground plane subwavelength slit

    公开(公告)号:US10686482B2

    公开(公告)日:2020-06-16

    申请号:US15386753

    申请日:2016-12-21

    Abstract: A metal chassis for a mobile device is configured to transmit a signal of a wavelength. A first side of the chassis faces the inside of the mobile device and includes a first aperture that has a dimension that comprises a first subwavelength width of a slot in the chassis. A second side of the chassis faces free space and includes a second aperture that has a dimension that comprises a second subwavelength width of the slot in the chassis. A channel connects the first aperture and the second aperture. The slot has a length dimension and the channel may be centered along the length dimension. The channel is configured to support a transverse electromagnetic mode for propagation of the signal from the first aperture through the channel to the second aperture. As a part of a mobile device the chassis acts as a secondary radiator for the mobile device.

    PARALLEL VIA TO IMPROVE THE IMPEDANCE MATCH FOR EMBEDDED COMMON MODE FILTER DESIGN
    17.
    发明申请
    PARALLEL VIA TO IMPROVE THE IMPEDANCE MATCH FOR EMBEDDED COMMON MODE FILTER DESIGN 有权
    并行通过改进嵌入式通用滤波器设计的阻抗匹配

    公开(公告)号:US20160285428A1

    公开(公告)日:2016-09-29

    申请号:US14672138

    申请日:2015-03-28

    Abstract: A parallel via design is disclosed to improve the impedance match for embedded common mode choke filter designs. Particularly suited to such designs on four-layer printed circuit boards, the parallel via design effectively suppresses the reflection of the differential pair. By connecting the vias in parallel, the inductance of the entire via structure is reduced while its capacitance is simultaneously increased. By properly choosing the number of parallel vias and the spacing between them, the impedance of the parallel vias can be well controlled within the frequency range of interest. Consequently, the impedance match can be improved and the return loss of a four-layer printed circuit board common mode choke filter design is reduced.

    Abstract translation: 公开了并联通孔设计,以改善嵌入式共模扼流圈滤波器设计的阻抗匹配。 特别适用于四层印刷电路板上的这种设计,并行通孔设计有效地抑制了差分对的反射。 通过并联连接通孔,整个通孔结构的电感减小,同时电容同时增加。 通过适当选择并联通孔的数量和它们之间的间距,可以在感兴趣的频率范围内良好地控制并联通孔的阻抗。 因此,可以提高阻抗匹配,并且降低四层印刷电路板共模扼流滤波器设计的回波损耗。

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