Offset Microwave Antenna for Receiving 10ghz‑12ghz White Spectrum Ground Parallel Wave

Abstract

The invention discloses an offset-fed type microwave antenna for receiving 10GHz-12GHz white frequency spectrum ground parallel waves. The offset-fed type microwave antenna comprises a support, a feed source and a main reflection face, wherein the focal diameter ratio of the main reflection face ranges from 0.5 mm to 0.7 mm, the main reflection face is movably connected to the top of the support, a pitch angle of the main reflection face ranges from 5 degrees to 9 degrees, an offset angel beta is an included angle formed by a feed source central line and the symmetry axis of the main reflection face and is greater than or equal to 5 degrees and smaller than or equal to 10 degrees.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a bias-fed microwave antenna for receiving parallel waves of 10GHz-12GHz white spectrum ground. Background technique [0002] Traditional Ku satellite receiving antennas are used to receive signals from satellite transponders above the earth. According to the reflection principle of a parabolic surface, its focus and focal length settings cannot receive parallel waves from the ground. For radio waves that are located on the ground and have a frequency band of 10GHz-12GHz parallel to the ground, the traditional Ku satellite receiving antenna is even more unable to achieve the function of receiving signals. details as follows: [0003] (1) 10GHz-12GHz has never been used for 360-degree omnidirectional coverage of radio on the ground, and some are only used for point-to-point (up to 90-degree point-to-surface) directional transmission, while the current directional transmission ...

AI Technical Summary

Problems solved by technology

[0003] (1) 10GHz-12GHz has never been used for 360-degree omnidirectional coverage of radio on the ground, and some are only used for point-to-point (up to 90-degree point-to-face) directional transmission, and the current directional transmission uses positive Feed antenna, the price is about 1,000 yuan, because the cost is too high (the cost acceptable in the market should be within 40 yuan), it is impossible to be used for a large number of end users covering a large area;

[0004] (2) The traditional Ku-biased antenna works at 11.7Ghz-12.2Ghz, and the wavelength is slightly shorter than 10Ghz-12Ghz, so the focus positions of the two different wavelengths after being focused by the reflecting surface are different;

[0005] (3) The traditional Ku bias-fed antenna receives radio waves from tens of thousands of meters of space, and the radio waves are projected to the reflective surface at a certain angle, which is different from the focusing path parallel to the reflective surface projected from the ground transmission tower. , so, the focal-diameter ratio and focal length of ordinary antennas cannot meet the requirements of receiving 10-12Ghz white spectrum

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