Broadband directional diagram reconfigurable antenna based on PIN diode switch

A technology of PIN diode and reconstructed antenna, applied in the field of broadband pattern reconfigurable antenna, can solve the problem of narrow overlapping bandwidth of antenna, and achieve the effect of simple DC bias current, easy processing and large bandwidth

Inactive Publication Date: 2021-09-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the difficulties in the design of pattern reconfigurable antennas is how to solve the problem that the overlapping bandwidth of different radiation modes of the antenna is too narrow

Method used

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  • Broadband directional diagram reconfigurable antenna based on PIN diode switch
  • Broadband directional diagram reconfigurable antenna based on PIN diode switch
  • Broadband directional diagram reconfigurable antenna based on PIN diode switch

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Embodiment Construction

[0025] The invention is a wideband pattern reconfigurable antenna based on a PIN diode switch, which can be used in modern point-to-point communication systems. It includes a magnetoelectric dipole radiating unit with a metal structure, a metal reflective floor, and a dielectric substrate.

[0026] The antenna is fed through a Γ-type probe, simultaneously feeding the electric dipole and the magnetic dipole, thereby achieving wide bandwidth. The Γ-type probe is connected to a coaxial feed unit through an SMA connector for power feeding.

[0027] Further, the two arms of the planar electric dipole are etched on one side of the dielectric substrate to play a fixing role. The two arms of the planar electric dipole are divided into three sections of different lengths, and four sets of PIN diodes are placed in the gaps. By controlling the on-off state of the PIN diodes, the antenna can realize three different radiation operations. state.

[0028] Furthermore, the DC bias circuit ...

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Abstract

The invention discloses a broadband directional diagram reconfigurable antenna based on a PIN diode switch. The antenna comprises a magnetoelectric dipole radiation unit, a dielectric substrate, a reflection floor, an insulation support stud, a metal screw, an inverted L-shaped probe feed structure, a direct current bias circuit, a PIN diode and a multilayer chip ceramic capacitor. A planar electric dipole structure and a direct current bias circuit of the magnetoelectric dipole radiation unit are etched on one side of the dielectric substrate. The planar electric dipole is etched into three sections with different lengths, and the PIN diodes are arranged in gaps of the planar electric dipole. The multilayer chip ceramic capacitor is arranged in the direct current bias circuit to cut off the alternating current. The directional diagram reconfigurable antenna established by the invention has the advantages of simple structure, light weight, wide bandwidth and the like, and the working modes of three different directional diagrams can be realized by controlling the on-off of the four groups of PIN diode switches.

Description

technical field [0001] The invention belongs to the technical field of wireless communication system antennas, and in particular relates to a reconfigurable antenna with broadband pattern based on a PIN diode switch. Background technique [0002] With the rapid development of information technology, wireless communication is becoming more and more important. In some communication processes, wireless systems need to adjust the direction of transmission signals in a timely manner, while suppressing signals from other directions, or reducing interference noise, which means that antennas, which are important components of wireless communication systems, should have timely direction selectivity. The general method to change the radiation direction of the antenna is to use the phased array antenna technology, but the phased array requires more antenna elements and takes up a lot of space. The feeding system matched with the antenna is complicated, and the required components such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q25/04H01Q1/38H01Q1/48H01Q1/50H01Q3/24H01Q9/16H01Q1/12
CPCH01Q25/04H01Q1/38H01Q3/24H01Q9/16H01Q1/48H01Q1/50H01Q1/12
Inventor 吴凡向蕾洪伟
Owner SOUTHEAST UNIV
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