Low frequency characteristics of electric wire antenna onboard scientific spacecraft

For satellite observation of the electric fields of waves, a dipole antenna using a wire (wire antenna) is often used. For calibration of a wire antenna, the effective length is a problem. In our present research, we clarified that the characteristics of the effective length depends on the frequency and the structure of the wire antenna, such as the wire insulator and the shape of tips by holding “rheometry” experiments[1]. In this paper we describe about “DPS method” on which we calculated the characteristic of the effective length theoretically.