A novel multi-mode interferometer system

In this paper we consider a new interferometer comprising wideband multi-mode antenna elements rather than conventional antenna elements. As a result, the phase ambiguities associated with the long baselines of the interferometer are resolved using the angle estimates provided by the multi-mode elements. This results in the elimination of the short baseline interferometers of the conventional five-element interferometer; the hybrid multimode interferometer needs only three elements. In addition, since the multi-mode elements are wide band, the hybrid multi-mode interferometer is capable of giving good performance over a wide bandwidth