Integrally packaged ultra-thin flexible antenna loaded with AMC structure

Abstract

The invention discloses an integrally packaged ultra-thin flexible antenna loaded with an AMC structure. The antenna comprises a monopole antenna, an AMC structure and an intermediate substrate, wherein the monopole antenna comprises a first radiation unit, a first floor, a microstrip feed line and a first base; the AMC structure comprises a second radiation unit, a second base and a second floor;the first floor and the second radiation unit are respectively bonded on both sides of the intermediate substrate; the front surface of the first substrate is printed with the first radiation unit and the microstrip feed line, and the back surface is printed with the first floor; the first radiation unit and the microstrip feed line are connected; the bottom edge of the microstrip feed line is connected to the bottom edge of the first base; the bottom edge of the first floor and the bottom edge of the first base are connected and collinear; the front side of the second base is printed with the second radiation unit, and the back side is printed with the second floor; and the bottom edge of the second radiation unit and the bottom edge of the second base are connected and collinear. The AMC structure is used as the backplane of the omnidirectional radiation monopole antenna, and its in-phase reflection phase characteristics are used to keep the antenna low profile, increase the radiation toward the surface of the human body, and improve the radiation gain and efficiency.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an overall packaged ultra-thin flexible antenna loaded with an AMC structure. Background technique [0002] In recent years, with the increasing demand for real-time monitoring of human physiological characteristics data, telemedicine technology has gradually developed. Through wireless transmission, the collected physiological parameters of the human body, such as blood pressure, heart rate, breathing rate, etc., are transmitted to the terminal device for recording and analysis, so as to make a correct judgment on the health status of the human body. As an important device in the communication process, the antenna should have stable and excellent radiation characteristics such as high gain and high radiation efficiency. Since human body tissue is a material with high dielectric constant and high loss, when the antenna works close to the human body, the two will interact wi...

AI Technical Summary

Problems solved by technology

In addition, the antenna loads the AMC structure, and the middle of the two needs to be supported. Foam is used in the prior art (for example, Kush Agarwal et al. in the document "Wearable AMCBacked Near-Endfire Antenna for On-Body Communications on Latex Substrate"), and the foam material is not easy to integrate , resulting in a large overall profile height of the antenna, which cannot meet the low-profile overall package design of the antenna

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