ANTENNA ARRANGEMENT AND SCANNING DEVICE FOR RADIO-FREQUENCY SCANNING

摘要

The present invention relates to an antenna arrangement for radio-frequency scanning having an antenna carrier that is rotatable about an axis of rotation and that has multiple antenna arms (5), with an angular offset relative to one another in a plane perpendicular to the axis of rotation, on which radio-frequency antennas (6) are arranged. The radio-frequency lines (9) to the radio-frequency antennas (6) have frequency filters (10a–d) that each allow only one frequency band to pass. In this case, the frequency filters (10a-d) of the radio-frequency lines (9) allow different frequency bands, which do not overlap, to pass in different antenna arms (5). This allows the speed of advance of samples (2) for examination that are routed past the antenna arrangement (3) to be increased without great technical complexity, for the same speed of rotation of the antenna arrangement (3), in comparison with previous arrangements. The different filters (10a-d) mean that each antenna arm (5) is provided with a frequency coding that allows local association of the antenna signals during evaluation.