As a key part of wearable electronic equipment

reliability of body surface communication antenna is an important factor to be considered during the process of antenna design. Polyimide is adopted as a flexible substrate material

which makes double-band antenna can fit for body surface

and double-band flexible artificial magnetic conductor structure is loaded to reduce the interaction between antenna and human body. Simulation based on Gustav human model in CST show that the antenna structure works in 2. 45 GHz and 5. 8 GHz

and the working performance under bending condition is also analyzed. The reliability of antenna structure is analyzed by comparing the change of specific absorption rate of human body. Simulation and experimental results show that the working characteristics of antenna structure remain stable when the bend radius of human body is greater than 10 mm

the specific absorption rate has 62 % reduction at 2. 45 GHz

86 % reduction at 5. 8 GHz

which meets the ICNIRP standards.