Analysis of the relationship between satellite field strong and receiving antenna ----- Satellite TV Antennas

Analysis of the relationship between satellite field strong and receiving antenna What is satellite field strength: (Effective Lsotropic Ra-Diated Power Abbreviation ELRP), which is the product of the Earth Station or Wei-Star-Day-Line-Transmitted Power (P) and Antenna Gain (G). That is: ELRP = P * R unit is DBW, and the satellite communication is an important parameter. It is popular that ELRP can be horny for satellite radiation field, in the same reception location, if the ELRP value indicates the satellite signal The stronger the transmit power. In general, the ELRP of the C-band repeater is typically 32 to 40 dBW, and the receiving the downlink frequency between 3600 to 4200 MHz, the ground is received as a circular feedforward antenna, the diameter of the antenna is 100 cm or more; and the Ku band repeater of EIRP The value is usually 42 ~ 56dBW, the received down frequency is 11600 to 12750 MHz, and the ground receives the elliptical biasing antenna loss statement, and the antenna diameter is less than 100 cm. Why is the EIRP of the KU band averaged higher than the EIRP of the C band? This is determined by the radio wave frequency characteristics of the different bands in the satellite, the C-band service area is much larger than the KU band, and the C-band is particularly obvious, and the friend of the Ku band show is a fact. Will n't forget, when you encounter heavy rain, the refined anal program will play "missing" with you. When you get a small or not, the "missing" program can automatically "reproduce the reappearance". As shown in the figure, Zhongxing No. 9 located in East 92.2, the EIRP value in the country is 49.2 ~ 57.5dBW, covering nearly 95% of the population in my country, from the center of the field strong center, 35 ~ 60cm can be used The antenna is received. The minimum antenna caliber coarse algorithm corresponding to EIRP is like the schedule: It should be noted that the antenna caliber listed in the Schedule is high, and the materials produced are high, and the materials are also available, and it can be produced in strict accordance with national relevant indicators. The quality of the antenna in the market is uneven. The biggest feature of counterfeit and shoddy products is that the price is very cheap. Today, the price of the formal product products also cut, and the recommendation friends choose Swift, Zhongwei, Gauss Bell and other brand antennas. Author: Zhang Huarong

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