Patch antenna for directional diagram and frequency scanning

Abstract

The invention discloses a patch antenna for directional diagram and frequency scanning, which comprises four patches, a dielectric plate, a metal plate, an electromagnet A, an electromagnet B and a turntable. The four patches are arranged in parallel on the metal plate, the metal plate is arranged on the dielectric plate, and the dielectric plate is arranged on the upper platform of the turntable. The electromagnet A is arranged on the platform of a connecting arm A of the turntable, and the electromagnet B is arranged on the platform of a connecting arm B of the turntable. The four patches are designed as a rectangular metal patch structure, so that the antenna is planar, small and light. The patch antenna is characterized in that the dielectric layer adopts ferrite, and the antenna frequency scanning is realized by adopting the spinning magnetism, precession and other related properties of the ferrite. Moreover, the antenna frequency scanning can be realized through adjusting a spinning column in an antenna mount, the adjustment is convenient, and the implementation is easy.

Description

technical field [0001] The present invention relates to a patch antenna, more particularly, it refers to a ferrite-based characteristic, which can realize the high and low frequency conversion of the antenna working frequency band only by rotating the platform, so as to realize the frequency sweep of the antenna, and is widely used It is used in wireless communication, radar and other fields that require reconfiguration of operating frequency. Background technique [0002] Yagi antenna, also known as directional antenna, is an antenna jointly developed and invented by Yagi Hideji and Uda Shintaro of Tohoku University in Japan in the 1920s, so it is called Yagi-Uda antenna, or Yagi antenna for short. [0003] Because the Yagi antenna has good directivity and has higher gain than the dipole antenna, it is widely used in radio equipment such as meter wave and decimeter wave band communication, TV, etc., for distance measurement and long-distance communication . In recent year...

AI Technical Summary

Problems solved by technology

After the traditional Yagi antenna is installed, its radiation direction is certain. If you want to change its flying direction, you must manually or mechanically adjust the position and polarization direction of the antenna. The sensitivity is low and the failure rate is high.

Even if the general patch Yagi antenna is used, the need to install multiple antennas will bring about a series of problems such as large size and heavy weight of the working platform, and poor electromagnetic compatibility.

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