A substrate-integrated waveguide-fed broadband dipole antenna

Abstract

The invention discloses a substrate integrated waveguide feed broadband dipole antenna, and the antenna comprises a dipole, parallel double lines, a substrate integrated waveguide, an inner layer ground, and a 50-ohm microstrip line. The bias feeding of the dipole is carried out through the parallel double lines, and the inner layer ground and the upper surface of the substrate integrated waveguide are coplanar. The 50-ohm microstrip line and the back surface of the substrate integrated waveguide are coplanar. One of the parallel double lines passes through the inner layer ground to be connected to the upper surface of the substrate integrated waveguide, and the other one of the parallel double lines is connected to the back surface of the bottom layer of the substrate integrated waveguide. The above structure can reduce the coupling of a feed network to a radiator, and reduces the high-frequency loss.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a substrate-integrated waveguide feeding broadband dipole antenna. Background technique [0002] Antenna is one of the essential equipment for various civil and military radio systems such as radio communication, broadcasting, navigation, radar, measurement and control, microwave remote sensing, radio astronomy, and electronic countermeasures. In recent decades, the rapid development of science and technology and the increasing modernization and socialization of people's lives have put forward higher requirements for the application of electronic technology. In many application fields, such as television, broadcasting, telemetry, aerospace and satellite communication, etc., not only high-quality transmission of information is required, but also broadband of equipment is required. For this reason, in line with the development trend of radio equipment, the research on broadband antennas ha...

AI Technical Summary

Problems solved by technology

[0004] At present, most dipole antennas use parallel feeding, that is, the antenna feeding network and the radiator are located on the same plane. This feeding method will lead to serious coupling between the feeding network and the radiator.

In addition, although there are also dipole antennas that use vertical feed, they are fed by stripline, and this feed method has serious loss in the high frequency band.

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