Calibration device for a switchable antenna array and corresponding operating method

Calibration apparatus for a switchable antenna array is characterized by the following improvements: - There are at least two inputs (19.1, 19.2, 19.3, 19.4) of several available inputs (19) of the beamforming network (17; 17 ') is fed simultaneously and / or jointly and / or in phase, and - The production of intermediate lobes (20) or further different Aziumutstrahlrichtungen the antenna elements (3, 3 ') have been previously adjusted such that the individual generated lobes (16, 116) in the wiring of at least two inputs (19.1, 19.2, 19.3 19.4) are in the correct phase additive.