A Frequency Reconfigurable Slot-Coupled Antenna Based on Liquid Metal

Abstract

The invention belongs to the technical field of anteannae, and discloses a liquid metal-based frequency- reconfigurable slot couple antenna, which comprises a feed network and a radiating part, The feeding network is a lower layer dielectric substrate, and the radiation part is an upper layer dielectric substrate. A rectangular microstrip patch is printed on the upper surface of the upper dielectric substrate, and a microfluidic channel annular groove filled with liquid metal or Teflon solution is engraved inside the rectangular microstrip patch. The invention adopts liquid metal to realize the reconfigurable characteristic. Compared with the traditional reconfigurable antenna, a pair of antennas can be used to realize the reconfigurable characteristic, and the structure is simple. Liquidmetal reconfigurable is simpler than electronic switch in realizing reconfigurable and wider tuning range. The liquid metal is braked by microfluidic channel, which is easy to realize and control compared with other braking methods. Gallium-indium-tin alloy is used as liquid metal, which is low cost and non-toxic; A large bandwidth is realized by using slot coupling feed.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a reconfigurable slot coupling antenna based on liquid metal frequency. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: with the rapid development of wireless communication systems, the requirements for antennas are getting higher and higher. Compared with the traditional antenna structure, the reconfigurable antenna can change the structure of the antenna radiator by loading radio frequency electronic devices or using mechanical methods, and the resonance characteristics and radiation characteristics of the antenna are greatly improved. Reconfigurable antennas can not only adapt to the channel and rate requirements of today's wireless communication systems, but also reduce the number and cost of antennas to a large extent, which is of great value in practical applications. Reconfigurable antennas not only solve ...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: the traditional reconfigurable antenna has a large power consumption, and the introduction of other circuits leads to complex structures; at present, due to the narrow bandwidth of the liquid metal antenna at home and abroad, it is about 5%. This is an important issue limiting liquid metal antennas

Images