Foldable large-spacing ultra-wideband low-profile tight coupling array antenna

Abstract

The invention provides a foldable large-spacing ultra-wideband low-profile tight coupling array antenna, which comprises a reflecting plate and a plurality of dipole antenna units, a dipole antenna unit is arranged on the upper surface of the reflecting plate, the dipole antenna unit comprises a grounding fork, a vertical polarization dipole and a horizontal polarization dipole, the vertical polarization dipole and the horizontal polarization dipole are orthogonal, and the vertical polarization dipole and the horizontal polarization dipole are in an L-shaped position relation; the dipole antenna units are mutually independent and have no staggered structure, so that the reflecting plate can be folded along the edges of the dipole antenna units. According to the invention, the number of active channels of the phased-array antenna is reduced by working at a large unit spacing, and the cost is reduced; the dual-polarization ultra-wideband wide-angle scanning electrical property is realized; according to the tight coupling dipole array antenna, the profile height of a dipole antenna unit is extremely low, and the array surface has a folding function.

Description

technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a foldable large-pitch ultra-wideband low-profile tightly coupled array antenna. Background technique [0002] With the rapid development of electronic information technology and the explosive growth of communication capacity, modern electronic systems are increasingly integrated and multi-functional. Using a single or very few arrays to complete the transmission and reception of broadband or relatively discrete signals has become a phased array antenna. future development trend. In addition to the electrical performance requirements of ultra-wideband, many carrier platforms often hope that the phased array antenna has a compact volume and a low profile height due to limited space or for the purpose of stealth. In addition, in order to reduce the number of active channels of the phased array antenna and reduce the cost, it is also an important index in the design of t...

AI Technical Summary

Problems solved by technology

In addition, in order to achieve strong capacitive coupling between units, tightly coupled phased array units often adopt interleaving structures, such as interdigitation and overlapping. loading platform

Although the profile height of the tightly coupled phased array antenna is relatively low, it is often still necessary to load a matching layer with a certain height above the aperture, which greatly increases the overall profile height of the tightly coupled phased array antenna

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