An antenna with reconfigurable frequency and pattern based on flexible materials

Abstract

The invention relates to a frequency and pattern reconfigurable antenna based on a flexible material. The antenna comprises a flexible dielectric plate and a microstrip patch; the flexible dielectricplate is composed of a radiation conductive layer, a flexible dielectric layer and a ground layer which are connected in sequence in an overlapping manner. the microstrip patch is arranged on the radiation conductive layer; the microstrip patch consists of a radiating arm, first-order microstrip line and second-order microstrip line; the radiating arm is in the shape of an inverted isosceles triangle; the radiating arm and the radiating conductive layer are provided with T-shaped groove lines corresponding to each other, and the transverse groove lines of the T-shaped groove lines are parallelto the bottom sides of the isosceles triangle. As a microstrip patch antenna, the operating frequency is 6.8 GHz when it is not bent. When the bending angle is less than 5 degrees, the frequency of the antenna is reconfigurable, and the transformation from single-band antenna to dual-band antenna is realized. The frequency of the antenna is reconfigurable under the dual-band effect. When the bending angle is 40 to 90 degrees, the antenna pattern can be reconfigurable to deflect the antenna direction, and the antenna is transformed from a microstrip patch antenna into a monopole antenna.

Description

technical field [0001] The invention belongs to the technical field of flexible microwave circuits and systems, and in particular relates to reconfigurable microwave and millimeter wave antennas. Background technique [0002] Antennas play an important role in wireless communication systems. With the continuous development of modern communication systems, wireless communication systems have higher and higher requirements for antennas, such as large capacity, ultra-wideband, and multi-functional integration. Various methods of mounting multiple antennas or forming arrays on the same platform seriously increase the cost and weight of the wireless communication system. In order to meet the development needs of the wireless communication system, reconfigurable antennas have been proposed. [0003] As a new type of antenna, the reconfigurable antenna was proposed in the 1960s. In order to reduce the weight of the antenna loaded on the radar, reduce the cost and reduce the radar s...

AI Technical Summary

Problems solved by technology

To cope with peak traffic, operators will simply add more base stations to over-build the network, resulting in inefficient use of radio base stations, so new methods are needed to improve the resource utilization of base stations

In the current reconfigurable antenna, the utilization rate of the antenna is not optimal, and the reconfigurable antenna pattern or polarization cannot be realized when the antenna frequency is reconfigurable; at the same time, for the antenna Reconfigurable implementation is more difficult. Most of them use diodes as switches to control radiation elements, or metamaterials, and use MEMS to achieve control. The realization of these antennas is more troublesome.

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