Keywords: satellite antenna, parabolic antenna
Discussing a continuous parabolic painting method with friends, according to the principle of this method, using the production of large-diameter parabolic antennas, and has made improved, now dedication, hoping to receive the approved by the majority of satellite enthusiasts. First, the self-made feedback large diameter parabolic antenna, you need to select the focal length and parabolic diameter size (refer to the Zhongwei parameters. Note: DIY is limited to the condition R to refer to the relevant data to draw a gourd). Second, for example. The 1800mm caliber antenna production process is as follows: Prepare a whole woodworking board (1220mmx2440mm), using this plate to make a larger diameter parabolic antenna of 2400 mm. The size (2x focal distance) is made according to the figure, a straight-angled trip is prepared, and a rope is prepared, the height of the buttons and the length of the rope is 2 times the focal length. The head is fixed at the end of the buttons, and then makes an 8-shaped iron wire ring, the circle is set from the upper end of the tip (fixed rope head), and the small circle is used to insert. Note: The dimensions in the figure are the size of the L800mml3 path. Third, in the figure, the Ding word is placed on the woodworking board as a Jonsa (Zhongwei) series feedback antenna specification parameter hits the left outpoint. Another one of the rope is fixed at the F focus. Slide the iron ring with a pen, so that the rope is tightened, the K point insert is a point on the parabola. Because we already know Ab = AKF (the height of the ruler and the length of the rope), KB $ 13KF is an isometric. Also because we have already used the ripeline of the parabola, we have been on the parabolic. Fourth, put the buttons smoothly move the line to slowly move, hold the K point's pen, while sliding the iron ring to make the rope are in the tight state, do not tilting, let the pen draw the trajector vertically on the board. This trajectory is a continuous parabolic. 5. When the buttons are moved to the F focus, the rope is just confuting, the upper end A of the buttons is just coincident with F focus, and the K point is just coincident with the vertex 0 of the parabolic. Sixth, turn Ding Wei to turn the rope and the pen k point on the left side of the tip, and then repeat the above process in the right area of the parabola. When reaching the end point of the right, a complete continuous parabola has been drawn on the wooden board. The FK length at this time is the long summer of the feed rod. Rotate the woodworking board L80 degree, repeat the above process, but also draw the second parabolic on the board. The opening of the parabola is a straight line (gray line in the figure), and the parabolic saw along the line, a total of two parabolic templates, and the two template is made into a cross, and the skeleton of the parabolic antenna can be made according to their own method. . There is more than the backbone and then process the antenna. If you need to make a larger size (Western female L: 12400mm caliber), you can follow the specific parameters of the guardian feedback antenna according to the first picture, select 2400mm caliber, 912mm focal length determination of dite and rope length of 1824mm, Determine the focus F, the vertex o and the quasi-line on the board.
Our other product:
