Ultra-wideband planar helical antenna device based on integrated feed structure

Abstract

The invention relates to an ultra-wideband planar helical antenna device based on an integrated feed structure. The ultra-wideband planar helical antenna device is small in size and reliable in work,and is characterized in that the device is provided with an antenna radiator and a feed balun mechanism which are located on the same single-layer printed circuit substrate; the antenna radiator adopts an ultra-wideband Archimedes spiral antenna radiator, and the feed balun mechanism adopts a conversion balun from a coplanar waveguide to a coplanar strip line, a feed line in the feed balun mechanism being directly connected with the antenna radiator through a metal via hole; the feed balun mechanism is provided with a coplanar waveguide with gradually changed characteristic impedance, a circular slot resonant cavity, a metal jumper wire and a strip line, wherein the coplanar waveguide is an unbalanced port, the strip line is a balanced port, and the part between the coplanar waveguide andthe strip line realizes conversion from an unbalanced signal to a balanced signal; and the shape and the size of the metal floor and the circular slot resonant cavity form an impedance deploying and tuning network, so that impedance matching of the Archimedes spiral antenna radiator and the integrated balun is realized.

Description

Technical field: [0001] The invention relates to the technical field of broadband antenna sensor manufacturing, in particular to an ultra-wideband planar helical antenna device based on an integrated feed structure that can meet the high-resolution requirements of modern radars, is small in size, and works reliably. Background technique: [0002] With the continuous development of science and technology, the application of electronic technology in the military field is becoming more and more extensive. Almost all modern weapon systems depend on the technical performance of electronic systems. Due to the increasingly complex electromagnetic environment in modern warfare, the status of electronic countermeasures is becoming more and more important. Although traditional jamming and anti-jamming methods have corresponding countermeasures, with the continuous emergence and development of new system radars, electronic countermeasures have presented greater challenges. Electronic ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the traditional ultra-broadband planar helical antenna with complex feeding structure, difficult processing, and soldering required for process realization, the present invention proposes a whole antenna that is realized by printed circuit technology, which is easy to design and process, especially in high frequency bands, and can An ultra-wideband planar helical antenna device based on an integrated feed structure that ensures design accuracy and better consistency

Images