Dual-band array antenna of frequency-selection-based surface resonance unit

Abstract

The invention discloses a dual-band array antenna of a frequency-selection-based surface resonance unit. A metal surface is arranged on the front of a microwave substrate, large metal wafers, four of which form a group, are mounted at equal intervals on the metal surface of the microwave substrate, a small metal wafer is respectively and coaxially mounted on each large metal wafer and supported by an insulated medium, an air dielectric is respectively formed between the microwave substrate and the large metal wafers and between the large metal wafers and the small metal wafers, a feeding network is arranged on the back of the microwave substrate, a feeding port is divided into probe feeding ports of four cell arrays by a feeding network, and a signal respectively passes through the probe feeding ports so that electromagnetic energy is indirectly coupled with and fed to the large metal wafers and directly fed to the small metal wafers. The invention has the advantages of simple whole structure, great making material selection range, low section, and the like and is applied to occasions, such as the navigation positioning of planes, ships, vehicles, and the like, satellite transceiver antennae and other occasions with high requirements for the section heights and the qualities of antennae.

Description

technical field [0001] The invention relates to a dual-band array antenna, in particular to a dual-band array antenna based on a frequency-selective surface resonant unit. Background technique [0002] With the rapid development of satellite navigation and positioning technology, all countries are planning to develop their own global satellite navigation systems. At present, the relatively mature GPS positioning system of the United States, the GLONASS positioning system of Russia, the GALLEO positioning system being implemented by the European Union and the Beidou of my country positioning system, etc. At the same time, there are also some ground aircraft navigation and other systems, which provide great convenience for our daily life, such as aircraft navigation, vehicle positioning and so on. Therefore, as a related signal receiving component, a navigation and positioning antenna with excellent performance is very important. [0003] Flat panel antennas are widely used, ...

AI Technical Summary

Problems solved by technology

In order to obtain higher antenna gain, traditional flat panel antennas are generally implemented in the form of arrays. The array units often use spiral structures, slot structures, etc., resulting in a relatively large cross-section of the antenna, which limits the application in some applications.

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