An Antenna System with Low Back Radiation Loaded with Pizzi-shaped Artificial Magnetic Conductor

Abstract

The invention relates to a low backward radiation antenna system loaded with a double cross-shaped artificial magnetic conductor. The antenna system comprises a slot antenna, a dielectric material B and an AMC reflecting plate, wherein the slot antenna is divided into three layers, the intermediate layer is an antenna dielectric substrate A, a metal layer A1 is arranged on the antenna dielectric substrate A, a grounding metal layer A2 is arranged below the antenna dielectric substrate A, and an antenna feeding port A3 is also arranged on the slot antenna; the AMC reflecting plate is divided into three layers, the intermediate layer is a dielectric substrate C of the AMC reflecting plate, three rows of square patches are arranged on the dielectric substrate C, each row includes three squarepatches, a double cross-shaped groove is arranged in each square patch respectively, and a ground metal layer C10 is arranged below the dielectric substrate C; and the dielectric material B is arranged between the antenna dielectric substrate A and the dielectric substrate C. The antenna system is fed by a microstrip line side, and the AMC reflecting plate forms a high-impedance surface, so thatthe structure can greatly improve the antenna gain, reduce the backward radiation and reduce the specific absorption rate of a wearable antenna, and can also avoid the coupling effect caused by the too close distance between the antenna and the human body.

Description

technical field [0001] The invention belongs to the technical field of antenna manufacturing, and in particular relates to an antenna system with low back radiation loaded with a P-shaped artificial magnetic conductor, especially an antenna with high gain and low back radiation used in the wearable field. Background technique [0002] In recent years, with the rapid development of body-centered communication technology, wearable electronic products have gradually become popular, and new antennas with flexible, deformable, and easy-to-wear characteristics have become one of the research hotspots in Wireless Body Area Network (WBAN). one. Traditional antennas, such as monopole, dipole antenna, slot antenna, inverted F antenna, etc., are applied to the wearable system of the human body because of their omnidirectional radiation, which makes the radiation near the end of the human body larger, thus affecting human health. , because there is no complete ground between the radiat...

AI Technical Summary

Problems solved by technology

Traditional antennas, such as monopole, dipole antenna, slot antenna, inverted F antenna, etc., are applied to the wearable system of the human body because of their omnidirectional radiation, which makes the radiation near the end of the human body larger, thus affecting human health. , because there is no complete ground between the radiator of this type of antenna and the human body, there will be a coupling effect when the antenna is close to human tissue, which will cause impedance mismatch. The biological dose specific absorption rate (SAR) is used to characterize the degree of influence of electromagnetic radiation on the human body , has become a mandatory indicator for evaluating the quality of mobile communication terminals

Images