High gain holographic impedance modulation surface antenna design method and antenna

Abstract

The invention discloses a high gain holographic impedance modulation surface antenna design method and an antenna. The method comprises steps of S1, establishing a model of a lattice unit based on a circular metal patch; S2, fitting the mathematical relationship between a geometric parameter and a surface impedance value between a distance g of a circular metal patch from an edge of the lattice unit and the surface impedance Z; S3, obtaining surface impedance distribution of the holographic impedance modulation surface; and S4, calculating a parameter value of the circular metal patch of the holographic impedance modulation surface and establishing a model of the entire holographic impedance modulation surface. The method is advantaged in that through the holographic impedance modulation surface antenna form of the step structure, the gain of the antenna can be effectively improved, radiation deviating from the normal direction is realized, overall performance of the antenna is improved, moreover, the holographic impedance modulation surface antenna has a planar structure, no additional introduction of a feed source and the feed network is required, the structure is simple, bandwidth is wide, and radiation deviating from the normal direction can be further realized.

Description

technical field [0001] The invention relates to a high-gain holographic impedance modulation surface antenna design method and antenna. Background technique [0002] The rapid development of modern wireless communication technology has put forward higher requirements for wireless communication electronic equipment. All wireless communication uses electromagnetic waves to send and receive signals. The antenna plays an important role in sending and receiving electromagnetic waves in modern wireless communication systems. It is one of the core components in modern wireless communication systems. It is very important for the communication system. High gain and off-normal radiation have become the development trend of antenna research and design. However, the traditional design methods currently used for antenna design have some inherent drawbacks. [0003] Defects and deficiencies of the existing technology: 1. The profile of the traditional reflector antenna is relatively hi...

AI Technical Summary

Problems solved by technology

However, the traditional design methods currently used for antenna design have some inherent drawbacks

[0003] Defects and deficiencies of the existing technology: 1. The profile of the traditional reflector antenna is high, which is not conducive to the integration of the system, and its feed source is not easy to block, and it is easy to expose its position; 2. The traditional lens antenna has a specific outline and is bulky ; 3. The manufacturing process of the planar lens antenna is complicated, and the material processing is more difficult; 4. The microstrip antenna array needs to introduce a complex feeding network, resulting in a large loss, which greatly reduces the efficiency of the antenna; 5. The frequency band of the waveguide slot antenna Narrow, difficult to achieve off-normal radiation

[0004] In the case that the relevant traditional technologies cannot effectively realize high-gain antennas, the present invention designs a high-gain, holographic impedance-modulated surface antenna design method and antenna based on circular metal patches.

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