Ultra-wideband low-profile antenna array structure

An antenna array and ultra-wideband technology, which is applied in the field of ultra-wideband low-profile antenna array structure, can solve the problems of large antenna array cross-section, difficulty in conformation, difficulty in miniaturization and conformation, etc., and achieve good impedance matching performance and good radiation direction Figure, the effect that is conducive to the conformality of the phased array

Active Publication Date: 2018-09-28
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this design idea has certain limitations in further expanding the working bandwidth of the antenna array, because the requirements for the electrical size of the ultra-wideband antenna unit make the cross-section of the antenna array too la

Method used

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  • Ultra-wideband low-profile antenna array structure
  • Ultra-wideband low-profile antenna array structure
  • Ultra-wideband low-profile antenna array structure

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Embodiment approach

[0032] As an embodiment of the present invention, the ultra-wideband balun adopts a taper-like impedance converter.

[0033] Furthermore, the outer conductor of the coaxial line of the UWB balun is provided with a longitudinal slit, and the opening angle of the slit is set according to the impedance of the array element, so that it has the characteristics of balanced feeding and impedance transformation. The rear end of the antenna unit is designed with a balanced feed balun. The feed balun has impedance matching and balanced feed characteristics in a wide frequency band, which improves energy transmission efficiency and has a simple and firm structure, which is conducive to the assembly of the entire antenna array. .

[0034] As an embodiment of the present invention, the wave-absorbing material layer is made of silica gel sheet material.

[0035] The present invention and its implementation will be described in detail below in conjunction with the accompanying drawings.

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Abstract

The invention provides an ultra-wideband low-profile antenna array structure, comprising an antenna array layer, a dielectric support layer, an absorbing material layer and a metal ground layer whichare sequentially connected from top to bottom to form a stacked structure, wherein the antenna array element comprises two parts of the same structure, each part is a gradual structure from the feeding end to the element arm; for a single array composed of multiple array elements, the outer edge shape is a hexagonal structure, and the upper and lower adjacent array elements are in a triangular array; the edge elements of each row of the single array are half-imaginary elements connected to the ground; for each row of array elements, the gap width between adjacent array elements is less than orequal to three percent of the wavelength of the high-frequency end. Compared with the prior art, the invention is capable of covering higher octave bandwidth, and has better impedance matching performance and radiation pattern. At the same time, the array antenna has smaller aperture than the conventional antenna, and the profile height is lower than that of the conventional antenna. So that, ultra-wideband miniaturized low profile requirements for antenna array are satisfied.

Description

technical field [0001] The invention relates to an ultra-wideband low-profile antenna array structure and relates to the field of antenna design. Background technique [0002] The traditional phased array antenna technology is becoming more and more mature. At present, the basic idea is to use a single broadband antenna unit to form an array, and use the array structure to make the array reach the corresponding indicators in terms of impedance characteristics or radiation characteristics. However, this design idea has certain limitations in further expanding the working bandwidth of the antenna array, because the requirements for the electrical size of the ultra-wideband antenna unit make the cross-section of the antenna array too large, making it difficult to miniaturize and conform. At present, the slot antenna is widely used in broadband phased arrays as a better performance antenna element, but it still cannot solve the reasons of high profile and difficulty in conformal...

Claims

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Application Information

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IPC IPC(8): H01Q1/48H01Q1/50H01Q17/00H01Q21/06
CPCH01Q1/48H01Q1/50H01Q17/00H01Q21/061
Inventor 王亮张正鸿张浩斌肖庆
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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