HUMAN BODY EFFECTS ON INKJET-PRINTED FLEXIBLE RF INTERCONNECTIONS

The efiect of human body on inkjet-printed ∞exible single- layer transmission lines in immediate proximity of body is investigated by simulations and measurements up to 9GHz. A multiline extraction method is used to obtain efiective material parameters allowing detailed analysis of body efiects. Already at 1mm distance from the body, the line properties converge toward the free-space values. However, at smaller distances and in direct contact with the body, often required in biosensor applications, there is a signiflcant change in characteristic impedance and increase in losses. The results of the paper can be used to evaluate the body efiects at difierent frequencies and at difierent small distances from the body.