Micro antenna feeder for wide band

PURPOSE: A micro broadband transmitting and receiving antenna feeder is provided to minimize mutual interference by mounting a transmitter and a receiver having a minimum size and producing a circularly polarized wave. CONSTITUTION: A transmitting circuit substrate is combined with a quad antenna or a cross dipole antenna. A receiving circuit substrate is combined with the quad antenna or the cross dipole antenna. A signal division and phase shifter distributes and phase-shifts a signal generated from a signal input part. A first signal distributor distributes the signal which is distributed and phase-shifted at a plurality of first designated angles. A second signal distributor distributes the signal which is distributed and phase-shifted at a plurality of second designated angles. A first signal delay part delays the signal which is distributed and phase-shifted to make one of the plurality of first designated angles a third designated angle. A second signal delay part delays the signal which is distributed and phase-shifted to make one of the plurality of second designated angles a fourth designated angle.