A millimeter wave reconfigurable antenna

Abstract

The invention discloses a millimeter wave reconfigurable antenna, which belongs to the technical field of antennas. It includes a feed horn, a first dielectric layer, a radiation array reflective surface layer, a second dielectric layer, a ground plane, and a DC bias voltage connected between the radiation array reflective surface layer and the ground plane arranged in sequence from top to bottom. The present invention utilizes the characteristics that liquid crystal materials can exhibit different equivalent dielectric constant values ​​under different voltage controls, and by controlling the voltage loaded on each unit, the outgoing phase of the beam irradiated on the antenna unit can be changed, thereby realizing the antenna A change in the outgoing beam pattern. This method of controlling the outgoing direction of the beam through voltage has the advantages of simple structure, fast adjustment speed, and wide scanning angle range.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a millimeter-wave reconfigurable antenna, which is widely used in fields such as wireless communication systems, satellite communication systems, and radar systems. Background technique [0002] As a component used to transmit or receive wireless electromagnetic waves, the antenna plays a vital role in wireless communication systems. In recent years, with the rapid development of the field of wireless communication, requirements for multi-frequency and multi-mode operation have been put forward for the antenna. In order to meet these requirements, people usually apply multiple antennas in the same system. This will not only increase the weight of the system, but also cause mutual interference between the antennas, thereby seriously affecting the normal operation of the antennas. In order to reduce electromagnetic interference, isolation devices can be added between...

AI Technical Summary

Problems solved by technology

Since each unit structure of the antenna needs to be loaded with a diode, the structure of the antenna is more complicated, and it is difficult to be applied to a large-aperture antenna

At the same time, in the millimeter wave band, the loss of the PIN diode is relatively large, and it is difficult to realize the development of high-efficiency antennas.

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