Satellite antenna efficient feed source ----- make the Satellite Antenna Better

Author: Fu Guangjun After reading the "Electronic News" 2004, Mr. Fang Zhijin and Mr. Chen Zhongqun, Mr. Chen Zhongqun, said, talking with bronze tablets or tin skin on the C head. It can enhance the effect of the KU feedback antenna to view the C-band signal. The author is in hand, a good year of Fujian, a good year, a 60cm feedback antenna is listening to the KU program on the 3S satellite. One idle in the United States produces a 17 ° K 2 ring integrated C header, so I want to imitate the production. Under the KU head, the homemade C head clamp is installed on the C head (at this time, the KU signal has been adjusted to the best), and the focus position is carefully adjusted to the focus position and the polarization direction. Asia 3S (105.5 ° e) C Boll program. Only three of Henan, Jiangxi, Liaoning, between 32% ~ 34%, signal lock light, flash, unable to download. Then, the fine iron tube is tightly in the corrugated disk of the C head, adjust the position, but the signal quality can only rise to 35% to 37%, just pass the threshold, three images, there are mosaic, pause, signal improvement effect obvious. Thinking, the role of the metal tube is to enhance the gathering wave, why not use the flared metal tube to enhance the gathering? So after a few tests. Make the trumpet simply shown in the figure in the front end of the C head. The signal quality can be increased by about 10%, and the quality of the signal quality is not changed before and after the C head, the above three (44% ~ 46% signal quality) is successfully downloaded, and the Fujian Taiwan has also successfully downloaded (36% ~ 38%) ), Hunan, Sichuan, Jilin, Shandong, and Shanghai five signals are all near the threshold, and the signals of other provinces and Taiwan Taiwan can be around 20% to 33%. The specific practice of the flavol is as follows: The difference between the two radius of the two radius is drawn with a large number of conjunctions, the arc length of the inner arc is equal to the outer diameter of the C headlet catheter, cutting this circular arc iron, The carefully curved tube is a speaker mouth, install it to the C head, and the small mouth card of the flare is in the outer edge of the waveguide, and it is not appropriate to fix it inwards, and is fixed with a glass glue. The extension line of the flare opening is suitable for intersect the edge of the pot, which can effectively receive the reflection beam of the antenna, and the size of the tension can be adjusted by the size of the arc radius, the radius is small, and the radius is large. Small angle. Interested friends may wish to try.

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