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Reconfigurable artificial surface antenna with three freedom degrees

An artificial surface, degree of freedom technology, applied to antennas, devices that make the antennas work in different bands at the same time, radiating element structures, etc. Widely variable, light-weight effects

Inactive Publication Date: 2018-04-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the above-mentioned artificial surface antennas can only scan in specific design frequency bands
This one-degree-of-freedom reconfigurable antenna limits the practical application of artificial surface antennas

Method used

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  • Reconfigurable artificial surface antenna with three freedom degrees
  • Reconfigurable artificial surface antenna with three freedom degrees
  • Reconfigurable artificial surface antenna with three freedom degrees

Examples

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0032] Such as figure 1 As shown, the whole antenna system roughly consists of two parts, the transmitting system and the regulating system. The transmitting system is a spherical wave transmitting antenna 1 , and the adjusting system is a reconfigurable artificial surface 2 .

[0033] Such as figure 2 As shown, the reconfigurable artificial surface antenna is mainly composed of multiple resonant units with the same structure. Each resonant unit includes a square F4B dielectric board and a copper structure and varactor diodes arranged on the dielectric board. On the F4B dielectric board A layer of copper sheet structure is plated in the middle of the surface. The copper sheet structure includes two "H"-shaped sheet structures and an interdigitated structure between the two "H"-shaped sheet structures, and two "H"-shaped sheet structures. An in...

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Abstract

The invention discloses a reconfigurable artificial surface antenna with three freedom degrees. The antenna mainly consists of resonant units of the same structure, and each resonant unit comprises asquare dielectric slab, a copper piece structure and a variable capacitance diode, wherein the copper piece structure and the variable capacitance diode are disposed on the dielectric slab. The copperpiece structure comprises two H-shaped piece structures and an interdigital structure located between the two H-shaped piece structures. The resonant units are periodically extended in a second direction, and the H-shaped piece structures on the adjacent resonant units are correspondingly connected to form a resonant unit group. A plurality of resonant unit groups are periodically extended in a first direction, thereby forming a reconfigurable artificial surface. The type of the variable capacitance diode is SMV1234, and the variable capacitance diode works in a reverse bias state. The antenna achieves the simultaneous reconfiguration of wave beam width, instant working band and scanning angle through applying different voltages to two ends of the resonant units, and is large in variableamplitude of reconfiguration.

Description

technical field [0001] The invention belongs to the field of reconfigurable antennas based on microwave varactor diodes, and discloses a reconfigurable artificial surface antenna with three degrees of freedom. Background technique [0002] Using software to control phased array antennas can be highly reconfigurable. By taking full advantage of the advantages of the digital baseband system, steerable beams can be generated with different azimuths, beam widths, and selectable frequency bands. However, these systems have the problems of high complexity and high cost, which is not conducive to wide application. Compared with phased array systems, artificial surface antennas equipped with microwave varactor diodes only need a spherical wave feed to complete beam scanning. But so far, the aforementioned artificial surface antennas can only scan in specific designed frequency bands. Such one-degree-of-freedom reconfigurable antennas limit the practical application of artificial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q23/00H01Q5/10H01Q5/314H01Q1/38
CPCH01Q1/38H01Q5/10H01Q5/314H01Q23/00
Inventor 马超李欢叶德信皇甫江涛冉立新
Owner ZHEJIANG UNIV
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