Multifunctional circularly-polarized converter array based on multi-layer FSS (frequency selective surface) structure and wireless communication system

Abstract

The invention belongs to the technical field of wireless communications and discloses a multifunctional circularly-polarized converter array based on a multi-layer FSS (frequency selective surface) structure and a wireless communication system; a four-layer cross oscillator equipped with a double-circle annular filtering structure is used as an array unit, different reflection-transmission characteristics are achieved in different frequency bands; then, the sizes of the cross oscillators in the X direction and the Y direction of an FSS unit are reasonably adjusted and the cross oscillators areperiodically arranged, and finally, a linearly-polarized feed source antenna is placed right above a circularly-polarized converter array and forms an included angle of 45 degrees with the X axis, the designed circularly-polarized converter array can achieve forward circularly-polarized radiation waves in high frequency bands respectively, and the functions of the reflection-type FSS circularly-polarized converter and the transmission-type FSS circularly-polarized converter array are effectively integrated on the same circularly-polarized converter. According to the FSS circularly-polarized converter in the invention, functional diversification and the intelligent degree are obviously improved, and the development and application of the FSS circularly-polarized converter technology are powerfully promoted.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a multifunctional circular polarization converter array based on a multi-layer FSS structure and a wireless communication system. Background technique [0002] At present, the commonly used existing technologies in the industry are as follows: In wireless communication systems, circularly polarized antennas are favored because of their advantages in resisting interference from rain, snow, clouds and fog, and being able to send and receive electromagnetic waves with arbitrary polarization. As a microwave device that can convert the linearly polarized electromagnetic waves of the feed antenna into circularly polarized electromagnetic waves, the circular polarization converter is well adapted to the needs of various communication antenna systems. In recent years, various forms of circular polarization converters have been designed and widely used in commun...

AI Technical Summary

Problems solved by technology

[0004] Although the existing FSS circular polarization converter technology has been widely used, with the increasing intelligence and integration of wireless communication systems, remote communication systems urgently require an FSS circular polarization converter capable of collecting reflection The function of the type FSS circular polarization converter and the transmission type FSS circular polarization converter are integrated to realize the flexible regulation of the polarization conversion direction, so that the circular polarizer can be applied to many different communication technology occasions at the same time, but It is very difficult to achieve this requirement through existing method technology

[0005] To sum up, the problems existing in the existing technology are: the function of the traditional FSS circular polarization converter is relatively single and solidified, and can only realize unidirectional polarization conversion. Once the type of FSS adopted is determined, the corresponding polarization conversion direction then it was determined

The technical defects caused by the traditional FSS circular polarization converter are: the function is single and solidified, the flexible adjustment of the polarization conversion direction cannot be realized, and it cannot be applied to multiple communication technology occasions at the same time

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