Duplexer
    1.
    发明申请
    Duplexer 审中-公开
    双工器

    公开(公告)号:US20090009263A1

    公开(公告)日:2009-01-08

    申请号:US11817936

    申请日:2006-01-05

    IPC分类号: H03H9/72

    CPC分类号: H03H9/6483 H03H9/725

    摘要: A duplexer includes an antenna terminal, a transmit filter, and a receive filter. The receive filter includes a first sub-filter that includes one or more resonators, and a second sub-filter including a double mode surface acoustic wave (DMS) filter. The second sub-filter is downstream of the first sub-filter relative to the antenna.

    摘要翻译: 双工器包括天线端子,发射滤波器和接收滤波器。 接收滤波器包括包括一个或多个谐振器的第一子滤波器和包括双模声表面波(DMS)滤波器的第二子滤波器。 第二子滤波器相对于天线在第一子滤波器的下游。

    Acoustic wave transducer with transverse mode suppression
    2.
    发明申请
    Acoustic wave transducer with transverse mode suppression 有权
    具有横向模式抑制的声波换能器

    公开(公告)号:US20070018755A1

    公开(公告)日:2007-01-25

    申请号:US10563890

    申请日:2004-06-16

    IPC分类号: H03H9/64

    摘要: The invention relates to a transducer that works with surface acoustic waves in which interfering transversal modes are suppressed. This is accomplished by mutually adapting to one another the transversal excitation profile of the acoustic wave and the transversal basic mode of the waveguide formed by the acoustic spur and adjacent exterior areas. This adaptation is accomplished by dividing the acoustic spur into an excitation area and marginal areas, whereby the width of a marginal area is approximately one-quarter wavelength of the transversal basic mode, and whereby the wave number of the transversal basic mode in the excitation area is zero. In one advantageous further development of the invention, an excitation strength that is a function of the transversal coordinate can be attained that is optimally adapted to the basic mode by dividing the excitation area in the transversal direction into partial spurs that are wired to one another serially and/or in parallel.

    摘要翻译: 本发明涉及一种能够抑制干扰横向模式的表面声波工作的换能器。 这是通过彼此相互适应的声波的横向激励分布和由声学支线和相邻的外部区域形成的波导的横向基本模式来实现的。 这种适应是通过将声学刺激分成激发区域和边缘区域来实现的,由此边缘区域的宽度大约是横向基本模式的四分之一波长,并且由此激励区域中的横向基本模式的波数 是零。 在本发明的一个有利的进一步发展中,可以获得作为横向坐标的函数的激励强度,其通过将横向方向上的激励区域划分为相互连接的部分马刺来最佳地适应于基本模式 和/或并行。

    Circuit with reduced insertion loss and component comprising one such circuit
    3.
    发明申请
    Circuit with reduced insertion loss and component comprising one such circuit 有权
    具有减少插入损耗的电路

    公开(公告)号:US20070191055A1

    公开(公告)日:2007-08-16

    申请号:US10570364

    申请日:2004-08-25

    IPC分类号: H04B7/08 H04M1/00

    CPC分类号: H04B1/18

    摘要: An electrical circuit has at least two parallel signal paths connected to one another on the antenna side and for which a band reject filter corresponding to the transmission range is implemented in a second signal path for frequency-selective improvement of insertion loss in the transmission range of a first signal path. With a band reject filter, the signal is reflected to the junction of the parallel signal paths arising from the second signal path and thus is rerouted to the first signal path.

    摘要翻译: 电路具有在天线侧彼此连接的至少两个并行信号路径,并且在第二信号路径中实现与传输范围对应的带阻滤波器,用于频率选择性地改善传输范围内的插入损耗 第一个信号路径。 利用带阻滤波器,该信号被反射到由第二信号路径产生的并行信号路径的结,从而被重新路由到第一信号路径。