Deutsche Aerospace Ag

Eads Deutschland Gmbh

Deutsche Aerospece Ag

Airbus Defence and Space Gmbh

Heinz-Peter Feldle

Rolf Reber

Michael Ludwig

Ulrich Prechtel

Joerg Sander

Helmut Leier

Jörg Sander

Bernhardt Schoenlinner

Wolfang Menzel

Marc Schreiner

Bernhard Schweizer

Bernhardt SCHÖNLINNER

A hermetically sealed HF front end (e.g. a transmission/reception module) in a multilayer structure that includes electronic components is provided. The multilayer structure contains a plurality of substrates stacked one above the other and carrying the components. Grooves are formed in the substrates and sealing elements are provided between the substrates, which sealing elements engage in the grooves, and the substrates are soldered together.

Hermetically sealed radio-frequency front end

A radar system with a phase controlled antenna array that contains a number of data and supply networks (), which are installed so that they are interchangeable, and a transmit/receive module () containing a transmitter and receiver circuit () as well as a number of circulator circuits () and a number of antenna elements () that are coupled via a circulator circuit () to the transmitter and receiver circuit (). Transmitter and receiver circuits (), circulator circuits (), and antenna elements () are combined in each transmit/receive module () and the transmit/receive modules () are arranged interchangeably on the radiation side of the radar or EW system ().

Amplitude and phase-controlled antennas-subsystem

A driver circuit for the generation of a switching voltage, particularly a negative switching voltage, which is suitable for GaAs technology. Field effect transistors whose electric properties can vary within a wide range and ohmic resistances that do not have to be adjusted later are used. The driver circuit is particularly suited for the selection of HF components.

Driver circuit for the generation of a switching voltage

A constant-current source that contains two substantial identical field effect transistors as well as a simple resistance network. The actual saturation current of one of the field effect transistors is measured and converted by the resistance network into a control voltage for the other field effect transistor which produces the desired constant current. With such a circuit, production tolerances, especially tolerances for field effect transistor, as well as operation-dependent temperature variations can be compensated for within a wide range.

Constant current source

Transceiver module

Amplitude limiter

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Senden, Germany

Heinz-Peter Feldle