Low-profile broadband metasurface microstrip patch antenna and preparation method thereof

Abstract

The invention relates to a low-profile broadband metasurface microstrip patch antenna and a preparation method thereof. The patch antenna comprises a feeder line, a first dielectric substrate, a slotted patch, a second dielectric substrate and a radiation patch which are sequentially stacked, wherein the feeder line comprises a microstrip line and a tail end fan-shaped patch connected with the microstrip line, the radius and the angle of the fan-shaped patch at the tail end are used for adjusting the working bandwidth of the low-profile broadband metasurface microstrip patch antenna, a rectangular slot is formed in the slotted patch, the length, the width and the position of the rectangular slot are used for adjusting the working bandwidth of the low-profile broadband metasurface microstrip patch antenna, the feeder line and the slotted patch feed power to the radiation patch in a coupled feeding mode so as to realize radiation and reception of signals, the radiation patch comprises a plurality of isosceles right triangle patches, and the isosceles right triangle patches are used for adjusting the surface current of the radiation patch. According to the invention, a relatively large working bandwidth can be realized while a low profile is maintained.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a low-profile broadband supersurface microstrip patch antenna and a preparation method. Background technique [0002] With the rapid development of wireless communication technology, requirements such as miniaturization and broadband are put forward for antennas used in wireless communication systems. Microstrip patch antenna has many advantages such as compact structure, low profile, light weight, easy processing, and can be integrated with microwave circuits. It can well meet the needs of wireless communication technology and is widely used in wireless sensing, communication and radar systems, etc. , so it has become a hot technology that has attracted much attention. [0003] Traditional microstrip patch antennas, such as rectangular patch antennas, have a relatively narrow operating bandwidth due to their relatively high quality factor, which is difficult to meet the ne...

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Problems solved by technology

[0005] However, methods such as increasing the number of parasitic resonators and irregular slot loading will either increase the size of the antenna, or greatly increase the difficulty of antenna analysis; and it is difficult to greatly increase the operating bandwidth of the antenna

Therefore, it is a challenge to design a microstrip patch antenna that achieves a large operating bandwidth while maintaining a low profile

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