Design method and beam scanning method of a spatial one-dimensional scanning lens antenna

Abstract

The present invention proposes a design method and a beam scanning method of a spatial one-dimensional scanning lens antenna, which adopts a space coupling feed and an extremely thin electromagnetic wave lens, and the beam scanning is realized by changing the position of the feed source, which greatly reduces the complexity of the system. And increased design flexibility. The lens antenna with parabolic phase distribution of the present invention has a slow decrease in gain as the scanning angle increases during beam scanning, which is far superior to the traditional lens antenna designed on the principle of equal optical path; the beam scanning lens antenna has a simple structure and is easy to process , can be used in microwave, millimeter wave, terahertz and other frequency bands; no complex active components, feed network, and complex lens design are avoided, which greatly reduces system complexity and improves design flexibility; manufacturing cost Low power consumption, no special heat dissipation structure, so the cost and complexity are much lower than one-dimensional phased array, planar Lunberg lens and complex network one-dimensional multi-beam antenna.

Description

technical field [0001] The invention belongs to the fields of antenna technology, wireless communication technology and radar technology, and in particular relates to a design method of a spatial one-dimensional scanning lens antenna and a beam scanning method. Background technique [0002] Modern wireless communication systems, including radar, satellite communication, microwave communication, and mobile communication, all require the antenna to have one-dimensional beam scanning and control capabilities. The solutions usually include one-dimensional mechanical scanning of the overall antenna, Butler matrix feeding network scanning, Rotman Lens network feed scanning, frequency scanning, planar Lunberg lens scanning and one-dimensional phased array scanning etc. At present, the mechanical scanning method is widely used, and the electromagnetic beam scanning and tracking are realized through the mechanical structure and the control circuit. [0003] The Butler matrix feed ne...

AI Technical Summary

Problems solved by technology

Therefore, this beam scanning method is difficult to apply to common communication systems

[0010] In the traditional one-dimensional 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, heavy structure, and high manufacturing cost. Currently, the main Applied in the field of military defense

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