Dual-band conical/pen-shaped composite wave beam nested antenna

Abstract

The invention discloses a dual-band conical / pen-shaped composite wave beam nested antenna. The nested antenna is specifically composed of an S-band conical wave beam antenna and a Ku-band pen-shaped wave beam dual-polarized antenna. The S-band conical wave beam antenna is a coaxial horn, and four coaxial probes are adopted for feeding, so that a conical wave beam directional diagram is realized. The Ku-band pen-shaped wave beam dual-polarized antenna comprises a round-opening corrugated horn, a square-round waveguide converter and an orthogonal mode coupler. The common port of the orthogonal mode coupler is connected to the round-opening corrugated horn through the square-round waveguide converter. The antenna achieves the dual-polarization function through the feed of the straight-through port waveguide and the coupling port waveguide of the orthogonal mode coupler. According to the invention, the cone-shaped / pen-shaped wave beams can work simultaneously, the antenna size is small, and the problems that the cone-shaped / pen-shaped wave beams cannot work simultaneously, the target polarization information is single and the like in the existing antenna are solved.

Description

Technical field[0001]The present invention relates to the field of antenna technology, and in particular, a dual-band cone / pen-shaped composite beam nested antenna.Background technique[0002]The tapered beam antenna pattern is in the azimuth, and the maximum radiation direction on the pitch surface has a certain angle and the normal radiation in the normal direction is small. Due to the advantage of having a large detection angle, the cone beam antenna is widely used to detect the target in a certain angular range, but there is a probe blind region for the forward target. The pen-shaped beamless, its maximum radiation direction is the normal direction, has the advantage of beam symmetry, low vouchers, etc., often used to detect forward targets. However, when the antenna gain is large, the front detection angle range is smaller. Therefore, the target detection angle range of the detector can be effectively increased by a cone / pen-shaped beam composite.[0003]In addition, different ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a dual-band cone / pencil composite beam nested antenna, which realizes the simultaneous operation of the cone / pencil beams, has a small antenna size, and solves the problem that the cone / pencil beams in existing antennas cannot work at the same time , single target polarization information, etc.

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