Microwave bandstop filter for an output multiplexer
    2.
    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。

    Microwave bandstop filter for an output multiplexer
    3.
    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。

    Method of designing an electrical filter and filter thus obtained
    4.
    发明授权
    Method of designing an electrical filter and filter thus obtained 失效
    设计如此获得的电动过滤器和过滤器的方法

    公开(公告)号:US6096090A

    公开(公告)日:2000-08-01

    申请号:US27141

    申请日:1998-02-20

    IPC分类号: H01P1/207 G06F17/50

    CPC分类号: H01P1/207

    摘要: There is disclosed a method for designing an electrical filter comprising the steps of: a) selecting at least one determined function called seed function; b) determining the product of all these seed functions to define a transfer function generating function of the electrical filter; c) translating the electrical filter transfer function into transmission zeroes and poles; d) and synthesizing those electrical filter dimensions that achieve the required zeroes and poles. A particular application is aimed at a Chebycheff filter comprised of serially arranged resonant cavities and couplers, operating in the microwave range.

    摘要翻译: 公开了一种用于设计电滤波器的方法,包括以下步骤:a)选择至少一个称为种子功能的确定函数; b)确定所有这些种子功能的乘积以定义电过滤器的传递函数产生功能; c)将滤波器传递函数转换为传输零和极; d)并合成实现所需零点和极点的那些电气滤波器尺寸。 具体应用是针对在微波范围内工作的由顺序排列的谐振腔和耦合器构成的切比赫夫滤波器。

    Circular waveguide dual-mode filter
    5.
    发明授权
    Circular waveguide dual-mode filter 失效
    圆形波导双模滤波器

    公开(公告)号:US5886594A

    公开(公告)日:1999-03-23

    申请号:US858943

    申请日:1997-05-20

    IPC分类号: H01P1/208

    CPC分类号: H01P1/2082

    摘要: The invention relates to a circular waveguide dual-mode filter comprising at least one element for adjusting a filter parameter. Said element is an elliptical waveguide portion disposed perpendicularly to the longitudinal axis of said circular waveguide. The filter may be coupled to an inlet circular waveguide and to an outlet circular waveguide.

    摘要翻译: 本发明涉及一种圆形波导双模式滤波器,其包括用于调整滤波器参数的至少一个元件。 所述元件是垂直于所述圆形波导的纵向轴线布置的椭圆形波导部分。 滤波器可以耦合到入口圆形波导和出口圆形波导。

    System for synthesizing microwave filters in a rectangular waveguide
    6.
    发明授权
    System for synthesizing microwave filters in a rectangular waveguide 失效
    用于在矩形波导中合成微波滤波器的系统

    公开(公告)号:US5557530A

    公开(公告)日:1996-09-17

    申请号:US49930

    申请日:1993-04-20

    申请人: Marco Guglielmi

    发明人: Marco Guglielmi

    IPC分类号: H01P1/207 G06F17/50

    CPC分类号: H01P1/207

    摘要: A system for synthesizing a microwave filter including a plurality of resonators having no tuning elements, in particular waveguide filters for use in satellite telecommunications networks. Signals representing the coupling coefficients of the coupling elements having a finite thickness and the resonant frequency of the resonators are stored in an electronic memory. A computation unit is controlled by a control unit arranged to determine automatically, in a single run, the widths of the coupling elements and the lengths of the resonators from the signals representing the coupling coefficients.

    摘要翻译: 一种用于合成微波滤波器的系统,该微波滤波器包括不具有调谐元件的多个谐振器,特别是用于卫星电信网络中的波导滤波器。 表示具有有限厚度的耦合元件和谐振器的谐振频率的耦合系数的信号被存储在电子存储器中。 计算单元由控制单元控制,该控制单元布置成在单次运行中根据表示耦合系数的信号自动确定耦合元件的宽度和谐振器的长度。