Antenna arrangement for a radar system, radar system, driver assistance system, vehicle and method for operating a radar system

An antenna arrangement for a radar system for a vehicle, comprising:

• four type-1 antenna elements of a first antenna element type and at least two type-2 antenna elements of a second antenna element type, one of the antenna element types being transmitting antenna elements and the other of the antenna element types being receiving antenna elements,
• wherein the type-1 antenna elements are arranged in a plane at corners of an imaginary planar rectangle, wherein two sides imaginary planar rectangle extend parallel to an imaginary first arrangement axis and form type-1 antenna element main axes and the other two sides of the imaginary planar rectangle extend parallel to an imaginary second arrangement axis that runs perpendicularly to the first arrangement axis and form type-1 antenna element transverse axes, and
• wherein at least two of the type-2 antenna elements are arranged on different imaginary type-2 antenna element main axes, which extend parallel to and at a distance from one another and parallel to one of the first and second arrangement axes.