An Equipped Conformal Slot-Coupled Antenna Based on Tunable Liquid Crystal Material

Abstract

The invention discloses an equipment common slot coupling antenna based on liquid crystal adjustable materials. The antenna adopts a Minkowski fractal microstrip structure to increase the electrical length of the radiation patch, reduce the size of the antenna unit, and reduce the impact of curvature changes on the curved surface. The impact of antenna radiation, and the use of stripline slot coupling feed structure to improve the bandwidth of the antenna unit, reduce the surface wave loss of the antenna unit and make the radiation element and the feed network have better isolation; by designing a rectangular slot on the floor The gap can suppress the surface wave propagation between the antennas and effectively reduce the coupling between the antenna units of the common type array; by designing the liquid crystal tuning circuit, the liquid crystal is applied to the antenna unit, and the equivalent dielectric constant of the liquid crystal is changed by electrical tuning to realize the frequency It can be reconfigured to improve the anti-interference ability of the common type antenna, thereby increasing the bandwidth and gain of the existing antenna and reducing the impact of radiation.

Description

Technical field [0001] The present invention relates to the field of antenna technology, in particular to a common-type gap coupling antenna based on an equipped liquid crystal tunable material. Background [0002] With the rapid development of electronic technology and the deepening of electromagnetic research, antennas as an indispensable key component of signal reception and transmission have penetrated into radar, electronic countermeasures, navigation and communications and many other fields. The military's requirements for real-time battlefield communication and the ability to transmit important information have driven research into advanced antenna technology. The design and development of new high-performance antennas has become an urgent need. [0003] Equipped with common antennas is widely used in aviation aircraft, missiles and other weapons and equipment, equipped with common antennas on aircraft and missiles can effectively solve the problem of prominent antennas on...

AI Technical Summary

Problems solved by technology

[0004] However, the existing planar antenna has a limited scanning range, the gain gradually decreases with the increase of the scanning angle, and the lobes gradually widen with the increase of the scanning angle. When it is applied to high-speed aircraft such as fighter jets and missiles, it will not only seriously affect its aerodynamic characteristics , will also increase a series of problems such as radar cross section

However, the mutual coupling suppression between microstrip common array antenna elements is serious, the profile is high, the bandwidth is narrow, and the gain is low.

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