A Conical Conformal Endfire Array Antenna

Abstract

The invention provides a conical conformal end-fire array antenna. The high-gain axial radiation characteristics are achieved under the condition of satisfying the broadband bandwidth of an antenna. The conical conformal end-fire array antenna comprises a conical dielectric substrate, two binary sub-arrays, a supporting dielectric substrate, a first metal isolation plate, a second metal isolationplate, a third metal isolation plate and two planar dipole antenna units, the two binary sub-arrays are conformed on the conical dielectric substrate, one of the binary sub-arrays is located at a position after the other binary sub-array is rotated according to a 180-degree rotation step around a rotating axis of the conical dielectric substrate as a rotating center, and the two binary sub-arraysare fed with a phase difference of 180 degrees. The supporting dielectric substrate is fixed in the conical dielectric substrate, the three metal isolation plates and the two planar dipole antenna units are parallelly fixed on the supporting dielectric substrate and are perpendicular to center lines of the two binary sub-arrays, and the three metal isolation plates and the two planar dipole antenna units are placed with intervals one by one.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a conical conformal end-fire array antenna, which can be applied to various conical carrier platforms. Background technique [0002] Endfire antenna refers to a type of antenna with endfire radiation characteristics. The antenna radiates energy from the feed source and radiates toward the space along the direction in which the antenna extends. Traditional radar array antennas mostly use side-firing arrays, and the antenna gain is positively correlated with the equivalent aperture size of the array, that is, the larger the gain, the larger the fuselage space is required to carry the antenna array; the radiation direction is located on the normal line of the array direction, if the array is required to achieve large-angle scanning, the coupling between antenna elements will intensify, the impedance matching will deteriorate, the gain will decrease, and a scanning dead zone will appe...

AI Technical Summary

Problems solved by technology

Although this invention utilizes the logarithmic periodic antenna with end-fire characteristics to be conformal on the conductor column to realize the axial radiation of the cylinder, and uses the logarithmic periodic antenna form to improve the antenna gain, the gain of a single antenna can reach about 8 ~ 9dB, but The disadvantage is that the antenna beam pointing deviates from the axial direction, and the antenna gain in the axial direction is low

Images