PRIMARY RADIATOR TO BE SHARED WITH CIRCULARLY POLARIZED WAVE AND LINEARLY POLARIZED WAVE

摘要

PURPOSE: To obtain a primary radiator to be shared with circularly polarized waves(CPWs) and linearly polarized waves(LPWs) (horizontal/vertical PWs) which can receive both radio waves of CPWs and LPWs from a satellite using both CPWs and LPWs. ;CONSTITUTION: The 1st phase circuit (metallic blocks 3, 4), the 2nd rotary phase circuit (dielectric plate 7) and plural output means (square waveguides 9, 10) respectively corresponding to rectangular components in a TE11 mode radio wave are successively arranged in the direction from the aperture part (1) side of a circular waveguide 2 to its terminal end face 5. In the case of receiving a CPW, the CPW is converted into an LPW by the 1st phase circuit, the plate 7 is turned so that the phases of the rectagular components in the LPW are not differentiated and a signal is outputted from one output means. In the case of receiving an LPW, a phase difference between the rectangular components in the LPW which is generated by the 1st phase circuit is eliminated so as to be inphase by rotating the plate 7 and one signal in the LPW is outputted from the other output terminal, while rotating the plate 7 so that the phase difference is about 180° and outputting the other signal in the LPW from the other means.;COPYRIGHT: (C)1993,JPO&Japio