Planar Luneberg lens antenna based on thin cloth phased array feed

Abstract

The invention aims to provide a planar luneberg lens antenna based on thin cloth phased array feed, and belongs to the technical field of antennas. According to the antenna, a spherical luneberg lens antenna is compressed into a plane structure through optical transformation, and then a large-spacing thin cloth feed array matched with the plane lens structure is optimized by using an optimization algorithm, so that after the sparse layout of the antenna is determined, the excitation amplitude of the antenna at different scanning angles in the working process is not changed, and the antenna stability is improved. The EIRP index in the scanning range is ensured; meanwhile, the antenna also has the advantages of high gain, low profile and low cost, and has relatively high engineering practicability.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a plane Lumberg lens antenna based on sparse phased array feeding. Background technique [0002] With the rapid development of wireless communication technologies such as 5G and low-orbit satellite communication, the application scenarios of wireless communication are becoming more and more complex. As an important device in a wireless communication system, the performance requirements of the antenna are becoming higher and higher. In wireless communication scenarios such as 5G and low-orbit satellite communication, there are practical applications such as long-distance communication, beam alignment, and small space assembly. Therefore, antennas are required to have high gain, fast beam switching, and low profile requirements. [0003] Phased array antennas are the most widely used beam scanning antennas in communication systems. They have the capabilities of fast w...

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Problems solved by technology

[0006] In the paper "Wide-Angle Scanning Lens at 28 GHz Fed by AntennaArray", Zhishu Qu et al. organically combined a high-gain and low-cost lens antenna with a phased antenna with large-angle fast electrical scanning. Although the scanning capability of ±58° is achieved, However, as the scanning angle of the 3D dielectric lens increases, the number of units excited by the feed array decreases, resulting in a significant decrease in the equivalent isotropic radiated power (EIRP) of the system index, which seriously restricts the use of ultra-high-gain wireless communication scenarios; electronic technology In the "Research on Phased Lens Antenna Technology", the team of Professor Qu Shiwei of the University took EIRP as the optimization goal, and achieved a scanning range of ±15° by using a 4×4 phased array with full power to irradiate the transmission array; however, due to the large number of transmission arrays The layer structure and the full array arrangement of feed sources require 16 TR channels to realize beam scanning, which is expensive

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