Lately, low dimensional magnetic Cu2+ systems containing CuX2 ribbon chains have attracted a great deal of attention because of their unusual intra-chain nearest- and next-nearest neighbor spin exchange (SE) relations. In such compounds it is frequently found that the SE interactions between the Cu2+ (S=1/2) ions are such that the next-nearest-neighbor (NNN) exchange is antiferromagnetic (AFM), whereas the nearest-neighbor (NN) exchange is ferromagnetic (FM), and the NNN SE is often considerably stronger than the NN spin exchange. Due to the inherent frustration of the NN and NNN spin exchange interactions, the CuX2 ribbon chains tend to develop unusual AFM incommensurate spin-spiral structures and concomitantly multiferroic behavior.Here, we propose to investigate the antiferromagnetic groundstate of the new system CuSb2O4 by neutron powder diffraction. More specifically, we want to search for helicoidal incommensurate ordering