Eads Deutschland Gmbh

Airbus Defence and Space Gmbh

Rainer Rittmeyer

Rolf Reber

Thomas Johannes Mueller

Karl-Ernst Schmegner

Georg Hoefer

Joerg Schroth

Hardy Sledzik

Thomas Johannes MÜLLER

Georg HÖFER

Jörg Schroth

In a method and apparatus for compensating for gain changes in an amplifier circuit comprising radio-frequency modules and attenuation elements, a radio-frequency module is driven with a first temperature-dependent monitoring voltage U(T), and an attenuation element with a second temperature-dependent monitoring voltage U(T). The first temperature-dependent monitoring voltage U(T) is produced by applying a temperature dependency to an individual monitoring voltage U, which is predetermined for a predetermined temperature for a radio-frequency module, in order to set the optimum operating point of the radio-frequency module. The second temperature-dependent monitoring voltage U(T) is produced by applying a temperature dependency to a predetermined monitoring voltage Ufor the attenuation element. The monitoring voltage Uis determined in an iteration method, such that the output power of the amplifier circuit reaches a predeterminable level at a constant input power. Memory devices are provided for storing values for producing monitoring voltages for the radio-frequency modules and attenuation elements.

Method and apparatus for compensating for gain changes in an amplifier circuit

A system for making electrical contact between a transmit/receive module and a testing device for the transmission of high-frequency signals includes a mechanically guided, frame-shaped contacting unit having a plurality of contact elements for contacting the TR module. The contacting unit surrounds the T/R module and is positioned relative to the T/R module such that the contact with the T/R module is established in one operation via the contact elements. A line substrate, which is arranged on the contacting unit and electrically connected with it, is constructed as a shielded triplate line by which the high-frequency signals can be conducted to the testing device.

System for making contact between a transmit/receive module and a testing device

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Ulm, Germany

Rainer Rittmeyer