Slotted waveguide antenna assembly
    8.
    发明授权
    Slotted waveguide antenna assembly 失效
    开槽波导天线组件

    公开(公告)号:US4841308A

    公开(公告)日:1989-06-20

    申请号:US229759

    申请日:1988-08-08

    IPC分类号: H01Q13/02 H01Q13/20 H01Q21/00

    摘要: A slotted waveguide antenna assembly includes a slotted waveguide, a dielectric beam shaper and reflectors which are fixed and held by a holder member.The dielectric beam shaper is formed from a pair of dielectric plate members. The dielectric plate members are so arranged that they are slightly closer at the forward ends than the base ends, thus providing a nonparallel arrangement. The inclination of the dielectric plate members is selected within a range of 0.8.ltoreq.d/D

    摘要翻译: 开槽波导天线组件包括开槽波导,电介质束整形器和由保持器构件固定和保持的反射器。 电介质光束整形器由一对电介质板构件形成。 电介质板构件被布置为使得它们在前端比基端稍微更靠近,从而提供非平行布置。 电介质板构件的倾斜度在0.8≤d/ D <1的范围内选择(D:基底部的电介质板构件之间的距离,d:前部的电介质板构件之间的距离 )。 电介质板构件具有在彼此相对的相对电介质板构件的内表面反射的电磁波之间产生相位差的厚度。 由电介质板构件的外表面的界面反射的电磁波朝向电介质板构件之间的空间移动,由于相位差而基本相互抵消。

    Slotted waveguide antenna assembly
    9.
    发明授权
    Slotted waveguide antenna assembly 失效
    开槽波导天线组件

    公开(公告)号:US4829312A

    公开(公告)日:1989-05-09

    申请号:US8148

    申请日:1987-01-22

    IPC分类号: H01Q1/40 H01Q13/02

    CPC分类号: H01Q1/40 H01Q13/0233

    摘要: The present invention is applied to a slotted waveguide antenna assembly which comprises a slotted waveguide having a plurality of slots, a reflector having an aperture in front of the slotted waveguide and reflecting radiated electromagnetic wave for forming directive beam, and a mounting portion for mounting the antenna assembly onto a place where the antenna assembly is to be installed.In such an antenna assembly, a fixing member is provided on the reflector at a position spaced from the slotted waveguide. The fixing member extends between the opposite walls of the reflector and fixed thereto. The fixing member has an end which projects outwardly from the wall of the reflector to form the mounting portion. The fixing member is sufficiently thin as compared with the working wavelength.The slotted waveguide antenna assembly may have a dielectric wave-guiding arrangement.

    摘要翻译: 本发明应用于开槽波导天线组件,其包括具有多个槽的开槽波导,反射器在开槽波导的前面具有孔,并且反射用于形成指向光束的辐射电磁波,以及安装部分 天线组件放置在要安装天线组件的地方。 在这种天线组件中,在与槽形波导间隔开的位置处,在反射器上设置固定构件。 固定构件在反射器的相对壁之间延伸并固定在其上。 固定构件具有从反射器的壁向外突出的端部,以形成安装部分。 与工作波长相比,固定部件足够薄。 开槽波导天线组件可以具有介质波导装置。

    Numbering machine with check digit function
    10.
    发明授权
    Numbering machine with check digit function 失效
    带校验位功能的编号机

    公开(公告)号:US4265173A

    公开(公告)日:1981-05-05

    申请号:US955235

    申请日:1978-10-27

    摘要: There is disclosed a numbering machine designed so that code numbers as well as check digits each consisting of a single-place digit are printed by means of a mechanical mechanism. The check digits are printed by a check digit type wheel having an arrangement of circulating digits which are calculated in correspondance with code numbers in accordance with a modulus 10 or 11 check with predetermined weights. When there is a carry from one code number digit place to the next higher digit place, it is necessary to print the digit skipped a predetermined number of the digits in the circulating digit arrangement, and as a result a drive control mechanism is provided so that when a change from one code number to the next higher code number necessitates a skipping operation, the change is detected and the check digit type wheel is rotated idly through a predetermined angle.

    摘要翻译: 公开了一种编号机,其设计使得通过机械机构打印每个由单位数字构成的代号以及校验数字。 检查数字由具有循环数字排列的校验位型轮打印,该循环数字与根据具有预定权重的模数10或11检查对应的代码编号计算。 当从一个码数字位置到下一个较高数字位置的进位时,需要打印在循环数字排列中跳过预定数量的数字的数字,结果提供驱动控制机构,使得 当从一个代码号到下一个更高代码号的变化需要跳过操作时,检测到该改变,并且校验位型轮被空转一预定角度。