Broadband wave beam fixing array antenna

Abstract

The invention provides a broadband wave beam fixing array antenna which comprises an upper layer metal plate, a lower layer metal plate, a dielectric plate, a feed probe, a main feeder line, four groups of main branches and 16 radiation patches. The upper layer metal plate, the dielectric plate and the lower layer metal plate are strip-shaped plates, the upper layer metal plate is attached to the upper surface of the dielectric plate, and the lower-layer metal plate is attached to the lower surface of the dielectric plate; an intermediate layer is arranged in the middle of the dielectric plate, the main feeder line, the four groups of main branches and the 16 radiation patches are arranged on the intermediate layer, the four groups of main branches are connected to the main feeder line at equal intervals, the four groups of main branches comprise four branches respectively, there are 16 branches in total, the 16 branches are connected with one radiation patch, and the 16 branches have a length difference; and the initial position of the main feeder line is provided with the feed probe which is longitudinally arranged and penetrates through the medium. According to the invention, the radiation characteristic of wave beam fixing is realized through the length difference of 16 branches in four groups.

Description

technical field [0001] The present invention relates to the field of communication antennas, in particular to a broadband beam fixed array antenna. Background technique [0002] The fixed beam antenna is a commonly used antenna in wireless communication. It can radiate in a fixed direction and can be used in satellite communication and point-to-point communication. Traditional antennas that can achieve fixed beams include series-fed array antennas. Some leaky-wave antennas can also be regarded as series-fed array antennas, but there will be beam dispersion. The methods to reduce beam dispersion and achieve beam fixation include coupled substrate-integrated waveguide antennas, metamaterial antennas, and metasurface antennas. However, the design of these antennas is relatively complicated. [0003] The publication date is November 24, 2017, and the Chinese patent with the publication number CN107394381A discloses a low-profile broadband circularly polarized array antenna bas...

AI Technical Summary

Problems solved by technology

Some leaky-wave antennas can also be regarded as series-fed array antennas, but there will be beam dispersion. The methods to reduce beam dispersion and achieve beam fixation include coupled substrate-integrated waveguide antennas, metamaterial antennas, and metasurface antennas. However, the design of these antennas is more complicated

[0003] The publication date is November 24, 2017, and the Chinese patent with the publication number CN107394381A discloses a low-profile broadband circularly polarized array antenna based on stacked traveling wave antenna units, including: three segments connected end to end and printed on both sides of the dielectric board Circularly polarized antenna unit composed of the metal layer on the side and metallized through-holes connecting the two layers, 2×2 antenna sub-array composed of metallized through-hole cavity and 4 antenna units, 16 antenna sub-array composed of metalized through-holes The full parallel feed network, the gap between the feed layer and the metal cavity and the antenna for coupling feed, the grounded coplanar waveguide (Grounded Coplanar Waveguide, GCPW) and the substrate integrated waveguide (Substrate Integrated Waveguide, SIW), but the design of the antenna is more complicated

Images