A Broadband Beam Fixed Traveling Wave Antenna

Abstract

The present invention provides a broadband beam fixed traveling wave antenna, comprising an upper metal plate, a dielectric plate, a lower metal plate, a feeding probe, a main feeder, 16 branches and 16 radiation patches, wherein: the upper metal plate, Both the medium plate and the lower metal plate are strip-shaped plates, the upper metal plate is attached to the upper surface of the medium plate, and the lower metal plate is attached to the lower surface of the medium plate; the middle of the medium plate There is an intermediate layer, the main feeder, 16 branches and 16 radiation patches are arranged on the intermediate layer, the main feeder is connected to the 16 branches at equal intervals, and the 16 branches are respectively connected to one The radiating patch is connected, and the 16 branches have length differences; the starting position of the main feeder is provided with a feeding probe vertically placed through the medium. The invention realizes the fixed beam radiation characteristic through the length difference of 16 branches, and meanwhile, the antenna of the invention has the characteristics of easy integration and processing and can realize large bandwidth.

Description

technical field [0001] The invention relates to the field of communication antennas, in particular to a broadband beam fixed traveling wave 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 ba...

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

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