Antenna Based on Composite Left and Right Hand Unit Structure

Abstract

The invention discloses an antenna based on a composite right-left-handed unit structure. The antenna includes a dielectric substrate, a top metal layer and an underlying metal layer. A bent type groove is formed near the center of the top metal layer, and a coplanar waveguide is disposed on one side of the top metal layer; a rectangular area with one side open is disposed on the dielectric substrate, a plurality of first metallized through holes are circumferentially and equidistantly formed along the rectangular area, a plurality of rows of second metallized through holes are formed in the rectangular area, the top metal layer communicates with the underlying metal layer through the metalized holes, and the dielectric substrate, the top metal layer, the underlying metal layer and the metallized holes form a rectangular substrate integrated waveguide resonant cavity; the rectangular substrate integrated waveguide resonant cavity is connected to the coplanar waveguide through a microstrip line; and the underlying metal layer is provided with two rectangular ring grooves which are arranged in parallel, and each of the rectangular ring grooves is internally provided with a patch. Theantenna based on the composite right-left-handed unit structure further reduces the size of the antenna, reduces the processing cost of the antenna, is easier to integrate with planar circuits, and has a lower operating frequency point.

Description

technical field [0001] The invention relates to an antenna, in particular to an antenna with a composite left and right hand unit structure, and belongs to the field of microwave technology. Background technique [0002] With the development of wireless communication systems, many devices are required to work in two or more frequency bands, so dual multi-band antennas have become a hot spot in antenna research in recent years. In 1999, D.R. Smith and others used Pendry's theory to make the world's first artificial left-handed material. In 2002, Claoz and Itoh first proposed a new method of realizing left-handed materials with transmission lines. Composite left-handed transmission lines are used as the realization form of transmission lines for left-handed materials. They have low loss, are easy to realize, have various abnormal characteristics and potential application values, and are widely used in microwave engineering. designing. [0003] However, due to the rapid devel...

AI Technical Summary

Problems solved by technology

At present, although the traditional antenna has reduced the size of the antenna to a certain extent, there are still problems such as narrow bandwidth, small gain, low radiation efficiency, and high processing cost. Therefore, the present invention is based on the traditional dual-frequency antenna. The antenna structure is improved, and the dual-frequency antenna is changed to a single-frequency antenna. On the premise of ensuring good antenna radiation performance and high gain, the antenna size is further reduced, and it can meet the actual needs of various antenna occasions.

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