Dual-polarized satellite broadcast antenna

Abstract

The invention relates to the technical field of antennas, and particularly relates to a dual-polarized satellite broadcast antenna. The dual-polarized satellite broadcast antenna is characterized in that a connecting shaft and a bracket body rotatably connected with the connecting shaft are fixedly arranged on a shell so as to capture satellite signals through adjusting an elevation angle of the antenna. In addition, the dual-polarized satellite broadcast antenna is lower in power consumption (16mA) and higher in output power frequency (-85dbm), and wider in signal coverage under the same condition, for example, the center frequency of the antenna is 1472MHz, and the bandwidth is 40MHz. The dual-polarized satellite broadcast antenna further switches between a first circuit and a second circuit through setting a power supply switching circuit. The dual-polarized satellite broadcast antenna is switched to a right rotating antenna when voltage at an input end of a power supply is greater than or equal to detection voltage of the power supply switching circuit, and the dual-polarized satellite broadcast antenna is switched to a left rotating antenna when the voltage at the input end of the power supply is less than the detection voltage of the power supply switching circuit, so that dual polarization of the satellite broadcast antenna is realized.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a dual-polarization satellite broadcast antenna. Background technique [0002] At present, the market for satellite broadcasting antennas is basically monopolized by foreign countries. World SpaceSatellite Radio is a satellite digital radio broadcasting organization. In 2005, its users reached 115,000. At the end of the same year, the company expanded the Indian market and provided services in 9 cities in India, covering 650 retail outlets and 550 Approximately 290 million potential audiences purchased by direct selling agencies. Subsequently, the company launched two new channels on its satellite radio network --- East CoastRadio and Jacaranda, which can be received by the company's AfriStar satellite and reach users across South Africa. The two new channels now reach more than 500 million potential listeners in 26 countries. [0003] Looking at the domestic market, we can f...

AI Technical Summary

Problems solved by technology

[0004] In addition, the polarization mode of the traditional satellite broadcasting antenna is relatively simple. For example, in the circular polarization of the antenna, only left-handed circular polarization or right-handed circular polarization can be realized, and it cannot be realized at the same time.

In addition, the power consumption of the traditional satellite broadcast antenna is too high, generally at 25mA, and too high power consumption will affect the service life of the receiver, resulting in short standby time of the receiver

Moreover, as we all know, different geographical locations and different elevation angles have different strengths for the antenna to receive satellite signals. Generally, satellite broadcast antennas need to use other objects to support the elevation angle of the antenna to achieve a good satellite signal angle. This gives Operation brings great inconvenience, and these are all that those skilled in the art do not expect to see

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