Microwave bandstop filter for an output multiplexer
    1.
    发明授权
    Microwave bandstop filter for an output multiplexer 失效
    用于输出多路复用器的微波带阻滤波器

    公开(公告)号:US07468641B2

    公开(公告)日:2008-12-23

    申请号:US11492883

    申请日:2006-07-26

    IPC分类号: H01P1/00 H01P5/12 H01P9/00

    CPC分类号: H01P1/207

    摘要: A microwave bandstop filter comprises a waveguide segment of cross-section that presents longitudinal variation of sinusoidal type modulated by an amplitude function that is continuous, the period of said longitudinal variation of sinusoidal type being the Bragg period for the fundamental guided mode at a center frequency of the band to be stopped. A filter assembly comprises a microwave lowpass filter presenting a cutoff frequency and at least one interfering passband at frequencies higher than said cutoff frequency, and at least one bandstop filter as defined above, connected to the output of said lowpass filter, in which the amplitude and the period of said longitudinal variation, and also the length over which it extends are such that they stop said interfering passband of said lowpass filter. An output multiplexer for a multichannel microwave transmitter includes such a filter assembly.

    摘要翻译: 微波带阻滤波器包括横截面的波导段,其呈现由连续振幅函数调制的正弦波型的纵向变化,所述正弦类型的纵向变化的周期是中心频率处的基本导模的布拉格周期 的乐队将被停止。 滤波器组件包括微波低通滤波器,其在高于所述截止频率的频率处呈现截止频率和至少一个干扰通带,以及连接到所述低通滤波器的输出的至少一个如上定义的带阻滤波器,其中幅度和 所述纵向变化的周期以及它延伸的长度使得它们停止所述低通滤波器的所述干扰通带。 用于多通道微波发射器的输出多路复用器包括这种滤波器组件。

    Flat antenna
    2.
    发明申请
    Flat antenna 审中-公开
    扁平天线

    公开(公告)号:US20090167621A1

    公开(公告)日:2009-07-02

    申请号:US11659341

    申请日:2004-08-03

    IPC分类号: H01Q13/10

    CPC分类号: H01Q13/10 H01Q19/00

    摘要: The present invention relates to antennas of a planar profile coupled to waveguides, and particularly to completely planar antennas, applicable in mobile telephony, radars and space communications, which base their operating on the transmission of electromagnetic waves, mainly in the range of microwaves and millimetric waves, through a thin opening of a height that is less than the wavelength, having corrugations around said opening such that maximized wave transmission as well as the collimation thereof in a defined direction towards leaky waves by means of a resonant coupling mechanism are obtained.

    摘要翻译: 本发明涉及耦合到波导的平面轮廓的天线,特别涉及可应用于移动电话,雷达和空间通信中的完全平面的天线,其基于它们在电磁波的传输上的操作,主要在微波和毫米波的范围内 通过小于波长的高度的薄开口,在所述开口周围具有波纹,从而获得最大化的波传播以及通过谐振耦合机构沿着确定的朝向漏波的方向的准直。

    Microwave bandstop filter for an output multiplexer
    4.
    发明申请
    Microwave bandstop filter for an output multiplexer 失效
    用于输出多路复用器的微波带阻滤波器

    公开(公告)号:US20070024394A1

    公开(公告)日:2007-02-01

    申请号:US11492883

    申请日:2006-07-26

    IPC分类号: H01P1/213

    CPC分类号: H01P1/207

    摘要: A microwave bandstop filter comprises a waveguide segment of cross-section that presents longitudinal variation of sinusoidal type modulated by an amplitude function that is continuous, the period of said longitudinal variation of sinusoidal type being the Bragg period for the fundamental guided mode at a center frequency of the band to be stopped. A filter assembly comprises a microwave lowpass filter presenting a cutoff frequency and at least one interfering passband at frequencies higher than said cutoff frequency, and at least one bandstop filter as defined above, connected to the output of said lowpass filter, in which the amplitude and the period of said longitudinal variation, and also the length over which it extends are such that they stop said interfering passband of said lowpass filter. An output multiplexer for a multichannel microwave transmitter includes such a filter assembly.

    摘要翻译: 微波带阻滤波器包括横截面的波导段,其呈现由连续振幅函数调制的正弦波型的纵向变化,所述正弦类型的纵向变化的周期是中心频率处的基本导模的布拉格周期 的乐队将被停止。 滤波器组件包括微波低通滤波器,其在高于所述截止频率的频率处呈现截止频率和至少一个干扰通带,以及连接到所述低通滤波器的输出的至少一个如上定义的带阻滤波器,其中幅度和 所述纵向变化的周期以及它延伸的长度使得它们停止所述低通滤波器的所述干扰通带。 用于多通道微波发射器的输出多路复用器包括这种滤波器组件。