Antenna module for a receiver for mobile reception of signals of a global positioning satellite

An antenna module for mobile reception of locating satellite signals, said antenna module comprising:

• an electrically conductive base surface on which a multi-antenna system is formed from a plurality of mutually concentrically arranged reception antennas for receiving respective separate locating satellite signals, in each case with an azimuthal omnidirectional diagram of the radiation density and an azimuthally linear distribution of the phase angle Ø=0-2π*N of an integer Nth order of the radiation over a corresponding azimuthal angle range of α=0-21,
• wherein the multi-antenna system comprises:
• an N=1-th order circularly polarized first reception antenna for receiving locating satellite signals with the main radiation direction towards the zenith, and
• at least one further antenna whose order N differs from the order of the first reception antenna by the integer 1 in each case, and
• a reception signal combiner which is controlled according to a permanently installed sequence program, to which the reception signals of the individual antennas are fed at the input side and which is connected to an antenna module terminal at the output side, wherein the control is such that,
• a) during a reception interval of the time duration t1, the reception signal of the first reception antenna is switched through to the antenna module terminal,
• b) a reception signal of one of the further antennas that is clocked in steps in its phase and is shifted—at least once—between the phase angle range β=0 to β=2π is additively superposed on the reception signal of the first reception antenna during at least one search interval of the time duration t2 following the reception interval t1 so that, during the search interval, a radiation directional diagram with azimuthally between α=0 and α=2π—i.e. at least once—is given over a full rotation of the main direction pivoted in steps, and
• c) the steps a) and b) are cyclically repeated with a period t0.