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    • 143. 发明专利
    • BS/CS ANTENNA
    • JPH098521A
    • 1997-01-10
    • JP15360695
    • 1995-06-20
    • FUJITSU GENERAL LTD
    • KUSUNOKI HIROSHI
    • H01Q19/12H01Q1/12H01Q3/14
    • PURPOSE: To obtain the BS/CS antenna easily mounted/dismounted even outdoor. CONSTITUTION: The arm 2 to one end of which an LNB 3 is fitted is fitted removably to a rear mount section 1a of a reflecting mirror 1 of the antenna with a screw 4. An attachment/detachment part of a mount 1a of a back mirror has a thread hole 1b and the attachment/detachment part is fitted by the hole 1b with the screw 4 through a hole 2a made to a position of the arm 2 corresponding to the hole 2b. A knob 4a is provided to the screw 4 and the screw 4 is tightened without a tool. In the case of carrying, the screw 4 is turned manually, the antenna is dismounted into the reflecting mirror and the arm with the LNB, and they are individually handled. Furthermore, when the antenna is carried at a field as a camping place, the reflecting mirror and the arm are fitted at site by turning the screw 4 manually, then the antenna is easily installed.
    • 146. 发明专利
    • BEAM TILT TYPE PLANE ARRAY ANTENNA
    • JPH02224407A
    • 1990-09-06
    • JP4569089
    • 1989-02-27
    • NIPPON DENKI HOME ELECTRONICS
    • ITO AKIRA
    • H01Q19/28H01Q3/14H01Q21/06
    • PURPOSE:To facilitate the adjustment of a beam tilt angle, and to reduce manufacturing cost by combining a radiation part and a waveguide part in which a waveguide element group is formed correspondingly to the antenna element group of the radiation part so that the arrangement of both can be adjusted, and setting directivity in the direction of a straight line connecting the centers of two element groups. CONSTITUTION:At the time of the assembling of a plane array antenna, the radiation part 10 and the waveguide part 20 are held on a back cover 31 by holding plates 32, 33 and screws 34a to 34d. Then, a printed board 22 on which the waveguide element group G1 is formed and the printed board 24 on which the waveguide element group G2 is formed are shifted in X-direction against the printed substrate on which the radiation element group A of the radiation part 10 is formed. Thus, the straight line connecting the center of each element group is adjusted so as to be inclined by theta from the normal line of each printed board. In such a kinds of a circular patch antenna, radiation directivity is generated in the direction connecting the centers of the antenna element and the waveguide element as is generally known. Accordingly, the beam tilt angle equal to theta is set.