Stehle, A.; Siegel, C.; Ziegler, V.; Schönlinner, B.; Prechtel, U. (EADS Innovation Works, Dept: Sensors, Electronics and System Integration, 81663 Munich, Germany)
Nötel, D. (Forschungsgesellschaft für Angewandte Naturwissenschaften e. V. (FGAN), FHR MHS, Neuenahrerstraße 20, 53343 Wachtberg, Germany)
Seidel, H.; Schmid, U. (Saarland University, Chair of Micromechanics, Microfluidics/Microactuators, 66041 Saarbrücken, Germany)
Millimeter wave radiometer systems play an important role as sensors in security imaging applications. New array concepts and higher image quality become possible, if RF-MEMS technology is available for the routing of signals in the frontend. This paper presents the principle of a millimeterwave radiometer and its key components. Furthermore, a detailed description of RF-MEMS switches working in a SPST configuration in the radiometer is given. The switches show an insertion loss of about –0.6 dB and an isolation better –35 dB at 35 GHz.