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Wideband low sidelobe lens antenna based on novel artificial electromagnetic material

An artificial electromagnetic material, lens antenna technology, applied in the direction of antenna, electrical components, radiating element structure, etc., can solve the problems of limiting the aperture efficiency of the lens antenna, high requirements on the shape processing technology, and large volume of the lens antenna, which is convenient for promotion. , create simple, wide-ranging effects

Active Publication Date: 2015-07-15
SOUTHEAST UNIV
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  • Application Information

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Problems solved by technology

However, the traditional convex lens antenna is bulky, cumbersome, requires high shape processing technology, and is not easy to integrate due to its special shape; Replacing the graded medium with a layered homogeneous medium brings impedance mismatch, which leads to enhanced reflection of electromagnetic waves, which in turn limits the aperture efficiency of the lens antenna

Method used

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  • Wideband low sidelobe lens antenna based on novel artificial electromagnetic material
  • Wideband low sidelobe lens antenna based on novel artificial electromagnetic material
  • Wideband low sidelobe lens antenna based on novel artificial electromagnetic material

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Such as figure 1 Shown is a wide-band low-sidelobe lens antenna based on a new type of artificial electromagnetic material, including a lens body 1 whose central axis is on the same straight line, an impedance matching layer 2 and a feed source 3 arranged on both sides of the lens body 1, the The refractive indices of the lens body 1 and the impedance matching layer 2 are distributed gradually along the radial direction and uniformly distributed along the axial direction; the electromagnetic parameter distribution of the lens body 1 is designed through optical transformation theory, and the impedance matching layer 2 is based on the lens The electromagnetic parameter distribution of the main body 1 is designed; the lens main body 1 and the impedance matching layer 2 are composed of a new artificial electromagnetic material, and the new artificial electromagnetic...

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Abstract

The invention discloses a wideband low sidelobe lens antenna based on novel artificial electromagnetic material. The antenna comprises a lens body with an axis in a same straight line, an impedance matching layer, and a feed source. A refractive index of the lens body shows gradient distribution along a radial direction, and a refractive index of the impedance matching layer shows uniform distribution along s axial direction. The lens body and the impedance matching layer are made from the novel artificial electromagnetic material. The new artificial electromagnetic material consists of basic units of periodic arrangements. In the invention, the wideband low sidelobe lens antenna based on the novel artificial electromagnetic material realizes, for a first time, simultaneously regulating an aperture field amplitude and phase distribution in a microwave band; a bandwidth of the lens antenna is quite wide; dispersion in a Ku band is not clear, and the performance is stable; the production is simple; the technology is mature; the price is not high; the promotion is easy; and structural parameters can be scaled to be suitable for different wave bands such as the microwave, millimeter wave and terahertz wave.

Description

technical field [0001] The invention relates to a wide-band low-side lobe lens antenna based on a new type of artificial electromagnetic material, in particular to a lens antenna that can be designed according to the amplitude and phase requirements of the oral surface field, and belongs to communication and antenna technology. Background technique [0002] In microwave and millimeter wave engineering, lens antenna has the advantages of small side lobe and back lobe level and good directivity, so it has been widely used in aviation, aerospace, satellite communication, mobile satellite communication system and other fields. The lens antenna actually uses the imaging principle of the lens to convert the spherical wave emitted by the feed source into a plane wave. There are two ways to realize the traditional lens antenna, that is, by designing the shape of the lens antenna and designing the refractive index of the constituent materials to change the optical path of electromagn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q19/06H01Q1/36
Inventor 崔铁军齐美清汤文轩
Owner SOUTHEAST UNIV
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