ROTATING UNIT WITH A DEVICE FOR WIRELESS DATA TRANSMISSION, AND METHOD FOR WIRELESS DATA TRANSMISSION

In a method and a device for wireless data transmission and a method for wireless data transmission between two parts of a medical imaging device that are moving relative to one another. The medical imaging device comprises a rotation unit which is provided with two members allowed to move in a relative manner and a device which is used for wireless transmission measurement and/or operating data between two movable members. The device comprises at least: a first communication device, a second communication device, and a directional coupler, wherein the directional coupler has at least two radio-frequency conductors, with one of the radio-frequency conductors being connected at one end thereof with the first communication device, and the other end thereof is terminated with a real resistor, the second radio-frequency conductor is connected with the second communication device. One of the radio-frequency conductors extends annularly at least around the entire circumference of one of the two parts of the rotating unit that are movable relative to one another, while the other radio-frequency conductor is arranged on at least a portion of the circumference of the other part of the rotating unit; such that a constant power is extracted from the radio-frequency conductor connected with the communication device having at least one transmission unit.