Planar antenna array and polar antenna with polarization regulation function

Abstract

The invention provides a planar antenna array. The planar antenna array comprises multiple open waveguide units and waveguide signal transmission channels; each signal transmission channel is equipped with a multi-stage one-to-two power distribution network, and adopts a reflective structure which consists of multiple slowly-changed stage structures and slowly-changed stages; the open waveguide units, waveguide openings, a first polarized selection cavity, a second polarized selection cavity, a first polarized connecting opening, and a second polarized connecting opening are combined with multiple stage structures and interference convex structures, so as to effectively realize impedance conversion and impedance matching and expand frequency band bandwidth; in addition, the requirement on the manufacturing precision is relatively low, and the manufacturing cost is even lower; in addition, the invention provides a polar antenna with a polarization regulation function on the basis; the polar antenna comprises the polar antenna array with the above-mentioned structure, and a polarization regulation apparatus; the polarization regulation apparatus comprises a polarization synthesizer and a polarization receiving-transmitting device, wherein the common ports of the polarization synthesizer and the polarization-taking device are directly connected; and the polarization-taking device rotates along an axial line, and realizes dual-polarization receiving-transmitting and sharing through a minute quantity of microwave reactive devices.

Description

Technical field [0001] The invention belongs to the technical field of microwave antennas, and particularly relates to an improved open waveguide, an antenna sub-array with the structure, a flat panel antenna array, and a flat panel antenna with polarization adjustment. Background technique [0002] Satellite communication has the advantages of long transmission distance, wide coverage, less interference, etc. With the rapid development of global informatization, more and more information is transmitted through satellites, and satellite communications on mobile carriers anytime, anywhere, has become military and civilian The urgent need for dual-use emergency communication and real-time communication. Vehicle-mounted (ship-borne or air-borne) satellite mobile communication systems are usually called "communication in motion". One of the core technologies of communication in motion is antenna technology. The antenna forms of communication in motion include reflector antennas, flat...

AI Technical Summary

Problems solved by technology

Usually live TV satellites and communication broadcasting satellites work in the state of dual-polarization or dual-circular polarization, while most of the current flat-panel array antennas work in the state of single-linear polarization or single-circular polarization. In order to achieve dual-polarization reception, it is often necessary to rotate The entire antenna panel, or use two antennas to send and receive two polarized signals respectively. These two methods are either complex in structure and cannot achieve dual-polarization compatibility at the same time, or the antenna manufacturing cost is high and the equivalent surface efficiency is low.

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