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Low RCS array antenna with reconfigurable scattered beams

An array antenna and beam technology, which is applied in the directions of individually powered antenna arrays, antennas, antenna arrays, etc., can solve the problems such as the inability to achieve active control of scattered beam beams and the inability to achieve RCS reduction, achieve stable radiation characteristics, and overcome low gain. Effect

Active Publication Date: 2020-03-27
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The array antenna has the characteristics of stable radiation characteristics and low radar cross-section, but it cannot realize the active control of the scattered wave beam, nor can it realize the reduction of RCS in the case of oblique incidence of electromagnetic waves

Method used

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  • Low RCS array antenna with reconfigurable scattered beams
  • Low RCS array antenna with reconfigurable scattered beams
  • Low RCS array antenna with reconfigurable scattered beams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , figure 2 , image 3 ,and Figure 4 ,

[0030] A low RCS array antenna with reconfigurable scattered beams, comprising a dielectric substrate 1, N slotted metal floors 2 printed on the lower surface of the dielectric substrate 1, N feeding structures 3, and N radiation stickers printed on the upper surface sheet 4 and N annular radiators 5, wherein, N≥2, N is a positive integer; the slotted metal floor 2 is etched with a rectangular slit 2.1; the feed structure 3 is composed of a metal column 3.1 and a rectangular metal sheet 3.2 Composition, the metal column 3.1 runs through the dielectric substrate (1) and is connected to the slotted metal floor 2, and the rectangular metal sheet 3.2 is embedded in the dielectric substrate 1; it is characterized in that:

[0031] The annular radiator 5 is composed of a rectangular metal ring 5.1, a metal patch 5.2, a PIN tube 5.3 embedded in the rectangular metal ring 5.1, a capacitor 5.4 and an inductor 5.5; t...

Embodiment 2

[0044] This embodiment has the same structure as Embodiment 1, only the following parameters are adjusted:

[0045] Rectangular metal ring 5.1 is a square ring structure, the outer side length is expressed as b, the width is expressed as WL, the outer side length b is 9mm, and WL is 0.1mm. The radiation patch 4 is a square structure, the side length is expressed as a, and the side length is a is 8mm.

Embodiment 3

[0047] refer to figure 2

[0048] Rectangular metal ring 5.1 is a square ring structure, the outer side length is expressed as b, the width is expressed as WL, the outer side length b is 31mm, and the width WL is 2.1mm. The radiation patch 4 is a square structure, the side length is expressed as a, and the side length a is 26mm.

[0049] Below in conjunction with accompanying drawing and the present invention will be further described

[0050] 1. Simulation content and conditions

[0051] Utilize commercial simulation software Ansoft HFSS to carry out simulation calculation to the radiation pattern of above-mentioned embodiment at 5GHZ place, the result is as follows Figure 5 shown.

[0052] Utilize commercial simulation software Ansoft HFSS to carry out simulation calculation to the monostatic radar cross section of above-mentioned embodiment, the result is as follows Figure 6 shown, where: Figure 6 (a) is a comparison diagram of the radar cross section of a single ...

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Abstract

The invention provides a low RCS array antenna with reconfigurable scattered beams. The low RCS array antenna comprises a dielectric substrate, N slotted metal floors printed on the lower surface of the dielectric substrate, N feed structures, N radiation patches printed on the upper surface of the dielectric substrate and N annular radiators, wherein the feed structure is composed of a metal column and a rectangular metal sheet; the annular radiator is composed of a rectangular metal ring, a metal patch, a PIN tube, a capacitor and an inductor; the PIN tube, the capacitor and the inductor areembedded in the rectangular metal ring; the rectangular metal ring is provided with M * N openings, and M is greater than or equal to 1, and the end parts of the openings are respectively connected with the PIN tube and the capacitor; and the metal patch is located on the outer side of the rectangular metal ring and connected with the rectangular metal ring through the inductor. The low RCS arrayanteena adjusts scattered wave beams through the rectangular radiation ring, guarantees that a high-gain effect is obtained under the condition that the radiation characteristic of the antenna array,and obviously reduces the radar scattering cross section of the antenna under the conditions of vertical incidence and oblique incidence.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a low-RCS array antenna with reconfigurable scattered beams, which is applicable to communication antennas and missile antennas with low observable characteristics. Background technique [0002] In the traditional communication field, the signal transmitting and receiving system is one of the most important components of the entire communication platform, the antenna is the core part of the system, and the radiation characteristics of the antenna are the main indicators to measure the quality of the antenna. As antennas are increasingly used in military fields such as aircraft, missiles, and ships, people's requirements for antenna scattering characteristics are also getting higher and higher. The key to improving the antenna scattering characteristics is how to reduce the radar cross section, and the radar cross section is the most basic parameter in the scattering ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q3/44H01Q21/06
CPCH01Q1/38H01Q1/48H01Q1/50H01Q3/44H01Q21/065
Inventor 贾永涛张家豪刘英
Owner XIDIAN UNIV
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