A Circularly Polarized Antenna Utilizing Ground Potential Metal Plate Radiation Technology and Its Design Method

Abstract

The present invention proposes a circularly polarized antenna using a ground potential metal plate radiation technology. The circularly polarized antenna comprises: an antenna circuit, a coupling circuit, and a ground potential metal plate; a first slot and a second slot are respectively arranged on two adjacent sides of the ground potential metal plate, and the extension lines of the first slot and the second slot are perpendicular to each other; the antenna circuit is arranged in the first slot and the coupling circuit is arranged in the second slot; the antenna circuit and the first slot excite a first current resonance mode, and the coupling circuit and the second slot excite a second current resonance mode; and the difference in phase between the first current resonance mode and the second current resonance mode is 90 DEG. According to the technical scheme of the present invention, the circularly polarized antenna is realized by using the ground potential metal plate radiation technology, the volume of the circularly polarized antenna can be greatly reduced, and miniaturization and ultra-thin design is realized.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a circularly polarized antenna utilizing the ground potential metal plate radiation technology, and also relates to a design method of the circularly polarized antenna utilizing the ground potential metal plate radiation technology. Background technique [0002] In the field of intelligent communication, signal propagation will be severely degraded in harsh environments. Compared with linearly polarized waves, circularly polarized waves have good advantages in signal propagation, and can overcome multipath interference and polarization mismatch. Circularly polarized antennas can receive incoming waves of any polarization, and can also be received by antennas of any polarization. Therefore, circularly polarized antennas are widely used in the field of satellite navigation. The mechanism of the circularly polarized antenna is to generate two linearly polarized waves with equal amp...

AI Technical Summary

Problems solved by technology

[0003] At present, the circularly polarized antennas commonly used in industry or commerce are mainly circularly polarized ceramic antennas. The volume of circularly polarized ceramic antennas cannot be miniaturized. Therefore, the application of circularly polarized antennas in ultra-thin electronic devices is limited. , such as mobile phones, pads, etc.

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