Rotationally and symmetrically arranged missile-borne high-gain backward radiation phase modulation array antenna

Abstract

The invention provides a rotationally and symmetrically arranged missile-borne high-gain backward radiation phase modulation array antenna, which is characterized in that four array elements are arranged perpendicular to the outer surface of a metal projectile, and four pairs of array elements are rotationally and symmetrically arranged around the axial direction of the metal projectile; a phase modulation matching network plate is located at the center, axially intersected with the metal projectile, of the plane where four columnar metal radiation oscillators are located, the phase modulation matching network plate is a power division four-network, and four ports have the characteristic of equal-amplitude 90-degree sequential difference; and the four array elements are respectively connected with four input ports of the phase modulation matching network board. The antenna has the advantages of excellent impedance characteristic, high structural strength and low cost; the backward gain of the antenna can be quickly adjusted; the missile body shielding influence is solved; and circular polarization work of the array antenna is realized, the anti-interference capability of the antenna is improved, and the problem of polarization mismatch caused by rotation of a projectile body is solved.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a missile-borne miniaturized telemetry communication antenna system, and relates to aspects such as directional communication, anti-jamming and high-overload resistance of the missile-borne antenna. Background technique [0002] With the rapid progress and development of radio communication technology, the requirements for various missile-borne and airborne platform electronic equipment are also getting higher and higher. The function of the missile-borne antenna is to send and receive radio signals to realize signal transmission with ground equipment. In order to facilitate combat arrangements, the general ground equipment is placed behind the flight path of the projectile, that is, the missile-borne antenna is required to have better backward radiation characteristics, and due to factors such as the high temperature of the tail of the missile body, the missile-borne antenna is generally...

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Problems solved by technology

The present invention is aimed at the requirement of missile-borne platform and directional data transmission on the ground, and at the same time solves many problems, such as the influence of the radiation characteristics of the antenna due to the shielding of the missile body, the change of the antenna polarization characteristics due to the rotation of the missile body, and the influence of the antenna structure reliability due to the high overload of the missile body. technical problem

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