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66 条记录 (耗时 0.008 秒)

    Waveguide filter having asymmetrically corrugated resonators
    61.
    发明授权
    Waveguide filter having asymmetrically corrugated resonators 有权
    具有不对称波纹谐振器的波导滤波器

    公开(公告)号：US06232853B1

    公开(公告)日：2001-05-15

    申请号：US09267096

    申请日：1999-03-12

    申请人： Rousslan Goulouev

    发明人： Rousslan Goulouev

    IPC分类号： H01P120

    CPC分类号： H01P1/211

    摘要： A waveguide filter is provided having a plurality of asymmetrical corrugated resonators. The filter may also include an input section and an output section including a low-pass filter unit and a transformer unit. The low-pass filter unit includes a plurality of symmetrically corrugated slots, and the transformer unit includes at least one stepped transformer section for matching the filter to an external waveguide line. Each of the asymmetrically corrugated resonators may include a pair of opposed slots of different depth, a long slot and a short slot. The resonators provide at least one reflection zero and two transmission zeros to the frequency response of the filter, thus providing high-pass, band-pass and low-pass filter properties in a single filter structure.

    摘要翻译： 提供了具有多个不对称波纹谐振器的波导滤波器。 滤波器还可以包括输入部分和包括低通滤波器单元和变压器单元的输出部分。 低通滤波器单元包括多个对称的波纹槽，并且变压器单元包括用于将滤波器与外部波导线匹配的至少一个阶梯式变压器部分。 每个非对称波纹的谐振器可以包括不同深度的一对相对的槽，长槽和短槽。 谐振器为滤波器的频率响应提供至少一个反射零点和两个传输零点，从而在单个滤波器结构中提供高通，带通和低通滤波器特性。

    Evanescent mode triple ridge lowpass harmonic filter
    62.
    发明授权
    Evanescent mode triple ridge lowpass harmonic filter 失效
    衰减模式三脊低通谐波滤波器

    公开(公告)号：US4673903A

    公开(公告)日：1987-06-16

    申请号：US667824

    申请日：1984-11-02

    申请人： Abdelmegid K. Saad

    发明人： Abdelmegid K. Saad

    IPC分类号： H01P1/211

    CPC分类号： H01P1/211

    摘要： A waveguide lowpass filter has successive groups of three separate ridges spaced longitudinally in said filter. A center ridge of each filter has a larger cross-sectional area than two side ridges which are the same size. All ridges are parallel to one another in a longitudinal direction. The groups are associated with shunt capacitances and the spaces between adjacent groups are associated with series inductances in an evanescent mode. In operation, the filter is capable of supporting a TE.sub.10 mode in the passband and three modes, TE.sub.10, TE.sub.20 and TE.sub.30 in the stopband. The filter has a relatively high power handling capability as compared to previous evanescent mode lowpass harmonic filters.

    摘要翻译： 波导低通滤波器具有在所述滤波器中纵向间隔开的三个独立脊的连续组。 每个过滤器的中心脊具有比两个相同尺寸的两个侧脊更大的横截面面积。 所有的脊在纵向上彼此平行。 这些组与分流电容相关联，并且相邻组之间的空间与ev逝模式中的串联电感相关联。 在工作中，滤波器能够支持通带中的TE10模式，阻带中的TE10，TE20和TE30三种模式。 与先前的渐逝模式低通谐波滤波器相比，滤波器具有相对较高的功率处理能力。

    Waveguide filter for microwave heating apparatus
    64.
    发明授权
    Waveguide filter for microwave heating apparatus 失效
    用于微波加热装置的波形滤波器

    公开(公告)号：US3758737A

    公开(公告)日：1973-09-11

    申请号：US3758737D

    申请日：1972-06-13

    申请人： AMANA REFRIGERATION INC

    发明人： IRONFIELD R

    IPC分类号： H01P1/16 ,  H01P1/207 ,  H01P1/211 ,  H01P1/212 ,  H03H7/01 ,  H05B6/70 ,  H05B6/74 ,  H05B6/76 ,  H05B9/06

    CPC分类号： H05B6/725 ,  H01P1/16 ,  H01P1/207 ,  H01P1/211 ,  H01P1/212 ,  H05B6/707

    摘要： A low pass filter is provided for rectangular waveguide of the type employed for launching electromagnetic energy in microwave ovens. The filter substantially rejects the transmission of harmonic frequencies of the fundamental generator operating frequency as well as adjacent energy oscillation modes. The structure described has a corrugated configuration with ribs defining alternate cavities and constrictions have cutoff frequency characteristics. Uniform and nonuniform spacing as well as dissimilar sections are discussed. The structure is electrically isolated from the broad waveguide walls to define two propagation paths for the electromagnetic energy. Lightweight conductive materials are suggested. The interrelationships of the alternating rib members provide a series of open and short circuit admittances which are analyzed to determine the desired electrical cutoff frequencies. Identical rib structure is defined on opposing sides of a reference plane extending along the longitudinal axis of the waveguide. Transforming means are utilized for impedance matching.