Abstract: A circuit board includes a plurality of conductive track levels disposed one above the other and insulation layers arranged between each of two adjacent conductive track levels. The circuit board includes a thermally conductive element, which includes ceramic, disposed between a first external insulation layer and a second external insulation layer.

Abstract: A method for operating a traveling-wave tube module of a communication satellite involves receiving of a high-frequency signal from an antenna of the satellite and determining that the high-frequency signal is to be amplified. The cathode current of a traveling-wave tube is increased to a predetermined operating value if the high-frequency signal is to be amplified and the high-frequency signal is amplified by the traveling-wave tube.

Abstract: A method for producing high-voltage insulation of electrical components includes applying a first layer of insulation material to the electrical component and applying a second layer of insulation material to the electrical component. The second layer is applied, at least in sections, to the first layer so that the first layer is situated, at least in sections, between the second layer and the electrical component. This method makes it possible to electrically insulate electrical parts on the electrical component as needed, and at the same time, to reduce the quantity of insulation material required.

Abstract: A method for operating an amplifier module of a communication satellite involves establishing an undesired state of the amplifier module, storing state data, which indicate the undesired state, in a nonvolatile memory of the amplifier module, after the undesired state has been established, and deactivating the amplifier module after the storage of the state data.

Abstract: A control apparatus for an earth-distant-platform includes a control unit, which includes with a control input and a control output, and a memory element. The memory element contains a plurality of operating value parameter sets for an RF transmit amplifier unit. The control input receives a control signal and, dependent on the control signal, the control unit selects an operating value parameter set from the memory element. The control output controls an energy supply unit and/or a preamplifier/linearization element using the selected operating value parameter set such that the RF transmit amplifier unit is operable in a defined operating state.

Abstract: A method for operating an amplifier module of a communication satellite involves saving at least one configuration parameter of the amplifier module in a non-volatile memory designed to store the configuration parameter when the amplifier module is not energized. The configuration parameter can be loaded from the non-volatile memory and used to configure the amplifier module.

Abstract: A circuit board includes a plurality of conductive track levels disposed one above the other and insulation layers arranged between each of two adjacent conductive track levels. The circuit board includes a thermally conductive element, which includes ceramic, disposed between a first external insulation layer and a second external insulation layer.

Abstract: A method for operating an amplifier module of a communication satellite involves establishing an undesired state of the amplifier module, storing state data, which indicate the undesired state, in a nonvolatile memory of the amplifier module, after the undesired state has been established, and deactivating the amplifier module after the storage of the state data.

Abstract: A method for operating an amplifier module of a communication satellite involves saving at least one configuration parameter of the amplifier module in a non-volatile memory designed to store the configuration parameter when the amplifier module is not energized. The configuration parameter can be loaded from the non-volatile memory and used to configure the amplifier module.

Abstract: A method for operating a traveling-wave tube module of a communication satellite involves receiving of a high-frequency signal from an antenna of the satellite and determining that the high-frequency signal is to be amplified. The cathode current of a traveling-wave tube is increased to a predetermined operating value if the high-frequency signal is to be amplified and the high-frequency signal is amplified by the traveling-wave tube.

Abstract: A control apparatus for an earth-distant-platform includes a control unit, which includes with a control input and a control output, and a memory element. The memory element contains a plurality of operating value parameter sets for an RF transmit amplifier unit. The control input receives a control signal and, dependent on the control signal, the control unit selects an operating value parameter set from the memory element. The control output controls an energy supply unit and/or a preamplifier/linearization element using the selected operating value parameter set such that the RF transmit amplifier unit is operable in a defined operating state.

Abstract: A power-supply device and amplifier are joined by way of a mechanical/thermal interface to form a unit. Electrical connections between the power-supply device and the amplifier chamber are run within this shared unit. A shared electrical interface is provided for external control- and supply signals, respectively.

Abstract: A regulator controls the DC current flowing through a load, where the current is initially supplied by an AC voltage source and thereafter rectified, the control being proportional to the load current. In one embodiment, the source or emitter potential of a transistor which functions as a control element is changed by a current source such that a current of predetermined strength flows through the control element transistor. The control current for the current source is derived from a current sensor in the load circuit. Additionally, a constant gate potential for the transistor control element is obtained through the current sensor. This circuit is preferably suitable for the regulation of the cathode current of travelling-wave tubes.