Vertical polarization wideband dipole antenna

Abstract

The invention discloses a vertical polarization wideband dipole antenna comprising an antenna radome, a reflecting base plate, an active vibrator, an SMA-KFD108 radio-frequency connecting piece and four parasitic vibrators, wherein the antenna radome is in the shape of a hollow cylinder, and the upper end of the antenna radome is closed; the reflecting base plate is a stepped cylinder and is fixedly connected to the lower end of the antenna radome, and the center of the reflecting base plate is provided with a through hole; the active vibrator is in a cylindrical structure made of brass materials and is perpendicular to the upper surface of the reflecting base plate; the SMA-KFD108 radio-frequency connecting piece is rotationally connected with the bottom of the active vibrator; the four parasitic vibrators are in same forms and equal spacings from the active vibrator and are equally distributed on the periphery of the active vibrator in a circumferential direction taking the spacingsas radii; and the parasitic vibrators are perpendicularly arranged on the upper surface of the reflecting base plate, and also made of brass rod materials and in the cylindrical structure. The invention also meets the requirements of broadband work through the smaller reflecting base plate and an installation structure by changing the number and the dimensions of the parasitic vibrators of the antenna.

Description

technical field [0001] The invention relates to an antenna, especially a dipole antenna. Background technique [0002] At present, the antennas of airborne or vehicle-mounted high-speed mobile platform data link measurement and control and communication systems are mostly dipole or blade antennas. These antennas often have low gain (below 0dB) and narrow working frequency band bandwidth (less than 5% ), and at the same time, it is difficult for the antenna beam to meet the requirement of a 3dB beamwidth at plus or minus 25 degrees in the pitch direction. In the field of high-speed mobile measurement and control such as airborne platforms, in order to expand the communication control distance, meet the requirements of antenna vertical polarization radiation and broadband communication, and also meet the characteristics of miniaturization, easy production and installation, the new vertical polarization, omnidirectional , broadband, and high-gain mobile measurement and control...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency that the prior art cannot meet the requirements for miniaturization and installation of high-speed mobile platforms such as airborne platforms, the present invention provides a vertically polarized broadband dipole antenna. By changing the number and size of antenna parasitic elements, the Chassis (less than 1 / 2 wavelength) and installation structure also meet the requirements of broadband work

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