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Frequency/polarization/pattern-independent reconfigurable patch antenna by adopting liquid crystal material to enhance polarization reconfigurable capability

A liquid crystal material, patch antenna technology, applied in antennas, devices that make antennas work in different frequency bands at the same time, radiating element structures, etc. Circular polarization performance and the effect of enhancing antenna polarization reconfigurability

Active Publication Date: 2018-04-06
BEIHANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no frequency / polarization / pattern independent reconfigurable patch antenna that uses liquid crystal materials to enhance polarization reconfigurability

Method used

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  • Frequency/polarization/pattern-independent reconfigurable patch antenna by adopting liquid crystal material to enhance polarization reconfigurable capability
  • Frequency/polarization/pattern-independent reconfigurable patch antenna by adopting liquid crystal material to enhance polarization reconfigurable capability
  • Frequency/polarization/pattern-independent reconfigurable patch antenna by adopting liquid crystal material to enhance polarization reconfigurable capability

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Embodiment Construction

[0062] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0063] Such as figure 1 As shown, it is a schematic side view of a preferred embodiment of the present invention. The side length L1 of the first dielectric board 101 is 180 mm, and the board thickness H1 is 4.5 mm; the side length L2 of the second media board 102 is 200 mm, and the board thickness H2 is 1.5 mm.

[0064] The second dielectric board 102 is located below the first dielectric board 101, and the upper surface of the second dielectric board 102 coincides with the lower surface of the first dielectric board 101, and the metallized via holes 103 are distributed symmetrically about the centers of the two dielectric boards. The central ±45° direction is 6 mm, and runs through the two dielectric plates. The polarization reconfigurable enhanced region in the second dielectric plate 102 ...

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Abstract

The invention discloses a frequency / polarization / pattern-independent reconfigurable patch antenna by adopting a liquid crystal material to enhance polarization reconfigurable capability, which comprises a first dielectric plate, a second dielectric plate, an octagonal metal patch, an octagonal metal ring, diamond parasitic metal patches, a metal plate and a reconfigurable power division phase shifter with the liquid crystal material, wherein the second dielectric plate is located below the first dielectric plate, and the upper surface of the second dielectric plate coincides with the lower surface of the first dielectric plate; and the reconfigurable power division phase shifter with the liquid crystal material in the second dielectric plate is used for enhancing the polarization adjustment capability of the antenna under a different reconfigurable frequency. Independence and reconfigurability of the antenna frequency, the polarization and the pattern can be realized, the dielectric constant of the liquid crystal material is adjusted through controlling bias voltage, the polarization characteristics of the antenna under a different reconfigurable frequency can be adjusted, the circular polarization performance is improved, the polarization reconfigurable capability, of the antenna is further enhanced, and the antenna can be switched flexibly among different frequency bands, different polarization modes and different radiation points.

Description

technical field [0001] The invention relates to a frequency / polarization / direction independent reconfigurable antenna, in particular to a frequency / polarization / direction independent reconfigurable patch antenna which uses liquid crystal material to enhance polarization reconfigurable capability. Background technique [0002] In order to realize the development of modern communication in the direction of large capacity, multi-function, and ultra-wideband, the concept of reconfigurable antenna was proposed in the 1960s, and it has become a hot spot in the field of antenna research in recent years. Many new design methods and antenna models Been proposed. [0003] Reconfigurable means that performance parameters such as the operating frequency, polarization state, and pattern shape of the antenna can be flexibly changed according to the actual situation, rather than fixed. It mainly realizes reconfigurable antenna performance by adjusting state-variable devices. Reconfigurab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q5/28H01Q5/321H01Q3/26H01P1/185
CPCH01P1/185H01Q1/38H01Q3/26H01Q5/28H01Q5/321
Inventor 张岩王立伟董涛殷杰王金灏
Owner BEIHANG UNIV
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