A method and system is disclosed for passing a transmitreceive control signal and a power signal through a coax cable from a base transceiver station to a tower top device in a time division duplex communication system. In one embodiment, a contact region and a corresponding contact material of the semiconductor substrate are formed, in regions or completely, with a protection against oxidation. In one embodiment, the side is an upper side of the display unit. A satisfactory grounding effect is obtained to reduce radiation from phase-delay circuit units by lowering the second dielectric layer toward the ground. The values for the lateral acceleration thus ascertained may then be used in further devices, such as for a vehicle dynamics controller or a device for preventing tipping.