Magnetic wave-absorbing structure loaded with pinpoint patch

A technology of magnetic wave absorption and wave structure, applied in the direction of electrical components, antennas, etc., can solve the problems of increasing the thickness of the absorber and demanding materials, and achieve the effect of expanding the absorbing frequency band, low cost, and simple process

Active Publication Date: 2016-05-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the thickness of the absorber is increased, and at the same time, more stringent requirements are placed on the material.

Method used

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  • Magnetic wave-absorbing structure loaded with pinpoint patch
  • Magnetic wave-absorbing structure loaded with pinpoint patch
  • Magnetic wave-absorbing structure loaded with pinpoint patch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In this embodiment, a periodic aluminum foil pattern is loaded on the surface of a 3 mm thick wave-absorbing rubber sheet. Aluminum foil unit size a=33mm, l=30mm, l 1 =20mm, w=2mm.

[0017] Experiments show that the -10dB absorbing frequency band of this embodiment is 2GHz-4.64GHz under the condition of vertically incident TE or TM waves. For the 3mm thick absorbing rubber sheet without embedded periodic aluminum foil, the -10dB absorbing frequency range is 2.8GHz to 4.4GHz. In contrast, after loading the periodic dipole aluminum foil patch, its -10dB absorbing bandwidth is strengthened both in the high frequency band and the low frequency band, especially in the low frequency band.

Embodiment 2

[0019] In this embodiment, a periodic aluminum foil pattern is loaded on the surface of a 2.2 mm thick wave-absorbing rubber sheet. Aluminum foil unit size a=28mm, l=25mm, l 1 =19mm, w=2mm.

[0020] Experiments show that, in the case of vertically incident TE or TM waves in this embodiment, the -10dB absorbing frequency band is 2.0GHz-3.6GHz. The 2.2mm thick wave-absorbing rubber sheet not embedded with periodic aluminum foil has a -10dB wave-absorbing frequency range of 3.0GHz to 4.8GHz. In contrast, after loading the periodic dipole aluminum foil patch, its -10dB absorbing bandwidth obviously moves from high frequency to low frequency.

Embodiment 3

[0022] In this embodiment, a periodic aluminum foil pattern is loaded on the surface of a 2.2 mm thick wave-absorbing rubber sheet. Aluminum foil unit size a=28mm, l=25mm, l 1 =15mm, w=2mm.

[0023] Experiments show that the -10dB absorbing frequency range of this embodiment is 2.1GHz-3.9GHz under the condition of vertically incident TE or TM waves. The 2.2mm thick wave-absorbing rubber sheet not embedded with periodic aluminum foil has a -10dB wave-absorbing frequency range of 3.0GHz to 4.8GHz. In contrast, after loading the periodic dipole aluminum foil patch, its -10dB absorbing bandwidth obviously moves from high frequency to low frequency.

[0024] The description has fully explained the principle and necessary technical content of the present invention, and those of ordinary skill can implement the present invention according to the description, so more specific technical details will not be repeated.

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PUM

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Abstract

The invention relates to a magnetic wave-absorbing structure loaded by a needle point patch, which belongs to the technical field of electronic materials. In the present invention, a wave-absorbing structure layer is arranged on the metal base plate, and the wave-absorbing structure layer includes a plurality of identical wave-absorbing units. Composed of aluminum foil patch, the cross pinpoint aluminum foil patch includes two dipoles of equal shape and size, perpendicular to each other, the dipole is composed of a rectangular part and a needle point part arranged on the narrow side of each rectangular part, the needle point part is An isosceles triangle, the center points of the rectangular sections of the two dipoles coincide. The invention has simple process, strong operability and low cost; under the condition that the thickness of the wave absorbing body is hardly increased, the wave absorbing frequency band is greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of electronic materials. Background technique [0002] Since World War II, radar absorbing materials have become the research focus of various countries. Especially due to the development of stealth technology, radar absorbing materials, as an effective means to improve the survivability and penetration capabilities of weapon systems, are firstly valued in the military. At present, many electronic devices have penetrated into various fields of real life. These electronic devices radiate electromagnetic waves into the environment, causing serious pollution, such as electromagnetic interference, electromagnetic compatibility, and a series of electromagnetic wave pollution that is harmful to organisms. Therefore, radar absorbing materials are also widely used in civil applications such as information dissemination, electronic devices, and microwave radiation protection. The S-band with a frequency of 2-4GHz ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00
Inventor 邓龙江张辉彬梁迪飞谢建良陈良陆海鹏周佩珩
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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