The CONSERT radio wave experiment is part of the International ROSETTA Mission. It will explore the Material structures and electrical properties of the interior of a comet. Use of electromagnetic waves seems to be the only feasible way to obtain information on the deep on the deep interior of a comet. Through the motion of the orbiter in the orbit and the rotation of the comet its different parts will be explored by the transmitted radio waves. The amplitude and phase of the received signal, obtained as a function of the relative position of orbiter and lander contain information about the dielectric permittivities and structures, inhomogeneities, inside the comet.
The CONSERT experiment requires an antenna on both the orbiter and on the lander. Both antennas will be used both for transmission and receiving. In this report we consider the orbiter antenna.