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Miniaturized Microstrip Magnet Antenna Based on Artificial Electromagnetic Structure Materials

A structural material, artificial electromagnetic technology, applied in the direction of antennas, resonant antennas, antenna grounding devices, etc., can solve the problems of the inability to meet the miniaturization of antennas and the large size of magnet antennas

Inactive Publication Date: 2015-11-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conventional magnet antennas are large in size and cannot meet the trend of miniaturization in antenna design

Method used

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  • Miniaturized Microstrip Magnet Antenna Based on Artificial Electromagnetic Structure Materials
  • Miniaturized Microstrip Magnet Antenna Based on Artificial Electromagnetic Structure Materials
  • Miniaturized Microstrip Magnet Antenna Based on Artificial Electromagnetic Structure Materials

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Embodiment Construction

[0031] A miniaturized microstrip magnet antenna based on artificial electromagnetic structure materials. The antenna is composed of a multi-layer structure: the bottom layer is a ground plate, and the ground plate uses YXG28 brand rare earth permanent magnet samarium cobalt with large residual magnetism, and its conductivity is 625000 Siemens / m; the middle layer is a 5×5 square metal patch array, the side length of the unit structure is 8-9mm, the middle gap is 1-2mm, and there are 5 air holes on the patch to prevent metallized vias from interfering with this layer metal connection (such as image 3 shown); the upper layer is a radiation patch, and the size of the patch is 34×33mm (such as figure 2 shown). The antenna adopts a 50 ohm coaxial feed, and the distance S between the feed and the center O of the antenna is 4.5 mm. A distance of 4-5mm from the center of the antenna is a 2×2 mushroom-shaped array, which is connected to the permanent magnet at the bottom through met...

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Abstract

The invention provides a miniature micro-strip magnet antenna based on artificial electromagnetic structure materials. The miniature micro-strip magnet antenna based on the artificial electromagnetic structure materials is used for navigation and communication of a high-speed aircraft with a plasma sheath arranged on the surface. The miniature micro-strip magnet antenna based on the artificial electromagnetic structure materials comprises a base layer composed of an earth plate made of rare earth permanent magnet samarium cobalt, a middle layer composed of a metal patch array, and an upper layer composed of radiating patches. The miniature micro-strip magnet antenna can improve the penetrability of an electromagnetic wave in plasma and achieves miniaturization. The decay degree of the electromagnetic wave radiated by the miniature micro-strip magnet antenna in the plasma is greatly reduced, and therefore the miniature micro-strip magnet antenna can solve the problem that the plasma sheath arranged on the surface of the aircraft causes communication outage between the aircraft and the ground.

Description

technical field [0001] The invention belongs to the field of microstrip antennas, in particular to a miniaturized microstrip magnet antenna based on artificial electromagnetic structure materials. Background technique [0002] When the aircraft flies through the atmosphere at hypersonic speed, the high-temperature gas around the aircraft will be partially ionized to form plasma. During the propagation of electromagnetic waves through the plasma sheath, due to reflection, refraction and absorption by the plasma sheath, the energy will be greatly attenuated, and even the transmission will be completely interrupted. At present, the main measures to slow down the attenuation of electromagnetic waves in the plasma include: changing the aerodynamic shape, increasing the communication frequency, spraying electrophilic substances, and externally strengthening the magnetic field. Each of these measures has certain limitations, such as changing the aerodynamic shape will change t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q9/04H01Q15/00
Inventor 赵青
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA