An antenna system (150) with distributed power supply is disclosed. The antenna system (150) comprises a CPU (151) comprising a central power supply (152), multiple antenna units (161, 162, . . . 171, 172 . . . ) connected to the CPU by cables and at least one distributed power supply unit (180) located at someplace along a chain of antenna units. At least one antenna unit (161) receives power from the central power supply (152). In the antenna system (150), at least one antenna unit (171) receives power from another antenna unit (172), at least one antenna unit (173) receives power from the at least one distributed power supply unit (180) such that at least two power supply domains (191, 192) are set up. In each power supply domain, a number of antenna units are connected to the same power supply.