Phased-array antenna with reconfigurable directional pattern

Abstract

The invention discloses a phased-array antenna with a reconfigurable directional pattern. The phased-array antenna is formed by arranging four antenna units in parallel at intervals, and the antenna units have the same structure. A radiating unit of each antenna unit is two rectangular rings with rectangular notches, and resonators are arranged under and above the radiating units to increase the front-to-back ratio and directivity of the antenna. The on-off of the ground plane is controlled by two PIN diode switches, so that the antenna has two different working modes, and has a reconfigurable directional pattern. The phased-array antenna is simple in structure and good in working performance, multiple working modes are achieved on the same phased-array antenna, scanning with the plane angle range of +/-58 degrees can be achieved in each working mode, and the requirements of complex application scenes can be met.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a phased array antenna with a reconfigurable pattern. Background technique [0002] Phased array antenna is one of the key technologies in wireless and communication systems, and has attracted the attention of many researchers due to its beam scanning and high gain characteristics. As we all know, the scanning range of a phased array antenna is limited by factors such as the mutual coupling effect of array elements, pattern and impedance matching, so the scanning range of a traditional planar phased array antenna is usually within ±60°. However, the phased array antennas in the prior art can only achieve effective scanning in a single mode. For complex application scenarios that require multi-mode effective scanning, this is an urgent problem that needs to be solved in the field of wireless communication technology. [0003] For example, in the paper "Wideband Pla...

AI Technical Summary

Problems solved by technology

However, the phased array antennas in the prior art can only achieve effective scanning in a single mode. For complex application scenarios that require multi-mode effective scanning, this is a problem that needs to be solved urgently in the field of wireless communication technology.

[0003] For example, in the paper "Wideband Planar Phased Array Antenna Basedon Artificial Magnetic Conductor Surface", Suyang Shi et al. proposed a phased array antenna applied to radar, which successfully realized the phase scanning function but its scanning angle range was only ±45 °, for phased array antennas used on radar, the scanning angle cannot meet the actual needs

Images