Study of body-antenna interaction at 433MHz

In this paper, we highlight the influence of the body on the characteristics of a loop antenna. In fact, when the antenna is used for applications on the body, antenna should have the following characteristics: Low Profile, compliant (easy to wear and to be powered) and body insulation with better efficiency on the body. So, antenna design for Body Area Sensor (BAN) applications is a difficult task because the antenna must be small, efficient, and must not be influenced by the body of the user, what makes the isolation of the antenna of importance. This influence is well detailed in this paper.