A novel approach to synchronization of arrays of Josephson junctions (JJA) is proposed. Each Josephson junction is placed in the center of a separate dipole antenna. Antennas at a distance of about a half wavelength from each other form a beam pattern with the main lobe perpendicular to the substrate plane. Two types of JJA were fabricated on YZrO 2 and sapphire bicrystal substrates. Self-resonant steps are clearly observed in I– V curves at temperatures 4–60 K. Besides the main resonance at 360 GHz, resonances at voltages corresponding to the second and third harmonics and to subharmonics at 1/2, 3/2, 5/2 of the main resonant frequency are observed. Radiation from such array was observed at bias voltages over 4 mV that corresponds to an oscillation frequency of up to 2 THz. The arrays demonstrated high sensitivity to submm-wavelength radiation in the frequency range 300–550 GHz.