Broadband electromagnetic dipole circularly polarized antenna

Abstract

The invention discloses a broadband electromagnetic dipole circularly polarized antenna, and the antenna comprises an electric dipole, a magnetic dipole, an inverted L-shaped feed sheet, a metal wall,a floor and a coaxial connector; the electric dipole consists of a pair of metal sheets parallel to the floor, and the magnetic dipole consists of a pair of metal sheets which are vertical to the floor and are short-circuited with the floor; the electric dipoles are arranged on the magnetic dipoles and are in central symmetry about the center of the floor; the inverted L-shaped feed sheet is arranged on the floor, is connected with an inner conductor of the coaxial connector arranged on the back surface of the floor and is used for coupling and feeding the electric dipole and the magnetic dipole, and the metal walls are arranged in the centers of four sides of the floor. The broadband electromagnetic dipole circularly polarized antenna has better broadband performance, and is convenient to process and good in mechanical stability.

Description

technical field [0001] The invention relates to the field of microwave antennas, in particular to a broadband electromagnetic dipole circularly polarized antenna. Background technique [0002] As the amount of data transmitted and interacted in modern wireless communication continues to increase, the system needs a wider operating frequency band to ensure a smooth link, and narrowband antennas can no longer meet the needs of practical applications. In addition, in many communication systems, it is necessary to receive or transmit multiple signals. When multiple antennas are used, the mutual coupling effect between the antennas will affect the communication quality of the system. Using broadband antennas can solve the above problems. The circularly polarized antenna can receive any polarized wave, and the radiation wave of the circularly polarized antenna can be received by any linearly polarized antenna. The use of circularly polarized antennas can make the forms of the tra...

AI Technical Summary

Problems solved by technology

[0004]At present, most of the electromagnetic dipole antenna designs are mainly realized by loading external power dividing circuits and phase shifting networks, and it is necessary to design a relatively complicated feeding network. On the one hand, the The antenna structure is more complex, on the other hand, it also leads to higher cost and loss

However, some performance indicators of the existing single-fed electromagnetic dipole circularly polarized antenna are not ideal enough to meet the needs of practical applications.

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