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Reconfigurable antenna based on conformal active frequency selection surface

A frequency selective surface and reconfigurable antenna technology, applied to antennas, electrical components, etc., can solve harmful and other problems, and achieve the effect of high-gain reconfigurable antennas

Inactive Publication Date: 2012-07-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

From the perspective of reducing the overall cost of the integrated information system, reducing the weight, reducing the radar cross section of the system, and realizing good electromagnetic compatibility characteristics, this phenomenon is very harmful, and it has also become a constraint for the integrated information system to further develop into a large-capacity, multi-functional supercomputer. A major bottleneck in the development and application of broadband

Method used

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  • Reconfigurable antenna based on conformal active frequency selection surface
  • Reconfigurable antenna based on conformal active frequency selection surface
  • Reconfigurable antenna based on conformal active frequency selection surface

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Embodiment Construction

[0021] refer to figure 1 , the present invention is a reconfigurable antenna based on a conformal active frequency selective surface, comprising a hollow cylindrical dielectric layer (1), a metal cross (2) conformal to the outer layer of the hollow cylindrical dielectric, a diode (3), and a dipole Antenna (4), control circuit (5). Along the Z axis and the direction of the outer surface of the cylinder, the conformal crosses are arranged periodically, and the adjacent crosses in each row are connected by diodes. The control circuit generates a bias voltage and adds the bias voltage to both ends of each row of crosses, so as to control the conduction of the diodes. off state.

[0022] refer to image 3 , The frequency selective surface resonance unit is connected with a diode in the middle, and the bias voltage generated by the control circuit on the upper and lower surfaces of the cylinder can control the on-off state of the diode, thereby changing the frequency response char...

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Abstract

The invention relates to a reconfigurable antenna based on a conformal active frequency selection surface. Bias voltage generated by control circuits (5) on the upper surface and the lower surface of a cylinder is added to two ends of each line of crosses, so as to control the on / off states of diodes (3). When the diodes are in switch-on and switch-off states, the frequency response characteristics of the frequency selection surface are respectively high reflection and high transmission. The conformal active frequency selection surface utilizes the frequency response characteristics to convert an omnidirectional diagram of a dipole antenna into a directed-radiation directional diagram, and can achieve the purpose that the directed-radiation directional diagram can scan at 360 degrees in an X-O-Y plane. The invention is suitable for the dipole antenna with the operating frequency below 2.5GHz; and when the omnidirectional diagram of the dipole antenna is converted into the directed-radiation directional diagram, the gain can be improved by about 8dB, and the final gain can reach about 11dB, thereby realizing the high-gain reconfigurable antenna. The reconfigurable antenna provided by the invention has the advantages that the structure is simple, and the on / off states of the diodes are easy to control.

Description

Technical field [0001] The invention involves a reconstructed antenna on the surface of the co -shaped source frequency. The invention can realize the reconstructed high -gain antenna system. Background technique [0002] The frequency selection surface (FSS) has a unique frequency response characteristics. Since its concept is proposed, it has been highly valued. Unique electrical properties have not only been widely used in the field of satellite communication, but also play an important role in the stealth of the aircraft.EssenceThe frequency selection surface is widely used in electromagnetic stealth, electromagnetic compatibility, military communication, electronic confrontation and other fields.There are more research on the surface of the plane passive frequency. It has its unique advantages and has a wide range of applications.However, the electrical performance cannot be changed after the surface of the plane passive frequency selection is completed. Therefore, in a comp...

Claims

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Application Information

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IPC IPC(8): H01Q3/46
Inventor 欧阳骏王良翼杨峰韩旺旺张凯之张剑
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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