Cable net structure-based expandable conical spiral array antenna

Abstract

The invention discloses a cable net structure-based expandable conical spiral array antenna. The cable net structure-based expandable conical spiral array antenna comprises conical spiral antennas, an upper net surface, a lower net surface and expandable peripheral trusses, wherein the conical spiral antennas are distributed in an array way, the upper net surface and the lower net surface are connected with the conical spiral antennas, the expandable peripheral trusses are connected with the upper net surface and the lower net surface, the conical spiral antennas are connected onto the upper net surface and the lower net surface by longitudinal cable segments, and the expandable peripheral trusses are arranged at the peripheries of the conical spiral antennas distributed in the array way. By the antenna, the total mass of the array conical spiral antenna is greatly reduced, and the antenna is small in processing difficulty, and is simple to assemble and is more convenient to transport; the tension force of a cable of the array conical spiral antenna is uniform, the antenna array structure is more stable, and the shaping accuracy of the array conical spiral antenna is greatly improved; and the antenna can be folded and expanded, the storage space is greatly saved, the structural deformation caused by transportation vibration is reduced, and the accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to an expandable conical spiral array antenna based on a cable net structure. Background technique [0002] A helical antenna is an antenna with a helical shape. It consists of a metal helix with good electrical conductivity, and is usually fed by a coaxial line. The core wire of the coaxial line is connected to one end of the helical line, and the outer conductor of the coaxial line is connected to the grounded metal mesh (or plate). connect. At present, the helical antenna has become one of the most important equipment in the radio communication system, and is the key equipment to determine the communication quality. Many satellites, including weather satellites, communication satellites, global positioning systems, etc., are equipped with helical antennas. [0003] Due to the characteristics of circular polarization, high gain and simplicity, helica...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an expandable tapered helical array antenna based on a cable net structure, aiming at solving the problem that the rigid body structure is often used in the current helical array antenna, which causes the overall mass of the helical array antenna to be too large, the assembly is complicated, and the space occupied Large size, inconvenient transportation and high production cost

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