Space lens scanning antenna based on elliptical paraboloid of revolution phase distribution and beam scanning method thereof

Abstract

The invention provides a space lens scanning antenna based on elliptical paraboloid of revolution phase distribution and a beam scanning method thereof. During beam scanning, the phase error of the space lens scanning antenna is unchanged along with the increase of a scanning angle, so that the gain is slowly reduced and the space lens scanning antenna is far superior to a lens antenna designed bythe traditional aplanatism principle; the structure is simple, the processing is convenient, and the device can be used for various frequency bands such as microwave, millimeter wave, terahertz and the like; complex active components and a feed network are not needed, complex lens design is avoided, system complexity is greatly reduced, and design flexibility is improved; the manufacturing cost is low, the power consumption is low, a special heat dissipation structure is not needed, and therefore the cost and the complexity are far lower than those of a phased array, a Lunberg lens and a complex network multi-beam antenna.

Description

technical field [0001] The invention belongs to the fields of antenna technology, wireless communication technology, radar technology, and imaging technology, and in particular relates to a space lens scanning antenna based on phase distribution of an ellipse-rotating paraboloid and a beam scanning method thereof. Background technique [0002] Antennas with beam scanning and target tracking capabilities are common requirements for modern wireless communication systems, such as radar, satellite communications, microwave communications, and new-generation mobile communications. Traditional antenna scanning usually adopts overall mechanical rotary scanning, combined Butler matrix feeding scanning, combined Rotman lens network feeding scanning, Lunberg lens scanning, and phased array scanning with T / R components loaded. Relatively speaking, the mechanical rotary scanning antenna is easy to implement, and the servo system is relatively mature, so there are many applications. [...

AI Technical Summary

Problems solved by technology

However, due to the limitation of its design principle, it is often necessary to design a spherical lens with a very high profile in the radiation direction, and its profile height is often several times the wavelength, which limits its application.

[0005] In the traditional phased array antenna, the feed network and the amplitude and phase control system are mixed together, the system complexity is high, the design restrictions are many, and it has the disadvantages of low efficiency, high power consumption, and high manufacturing cost. At present, it is mainly used in the field of military defense

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