This paper describes the COSMO-SkyMed SAR instrument and its active phased array, developed by Thales Alenia Space Italia under contract of Italian Space Agency and Italian Ministry of Defence. Major ...focus is given to the description of the antenna, the architectural solutions and the technological results.
This paper describes the design and development of channel amplifier and lineariser functions for Ka band satellite payloads. The units combine the latest expertise in electrical design and ...technological implementation. GaAs MMIC technology is used to realise all the functions needed in the microwave section while advanced packaging techniques, such as low temperature cofiring ceramic, are employed to obtain a very compact and lightweight design.
Since 90's MCM, MIC's, and MHIC's have been developed by several technological approaches for space application. Alternatives in the packaging solutions through thick film hybrids and thin film MIC ...have been found to increase integration level and reliability of space components. For analog and digital hybrids thick film MCM technology evolution was driven by high resolution printing and fine line etching of top layers. Thin film multilayer technologies employing photosensitive polyimide and sputtered SiO2 as dielectric have been evaluated to achieve line/gap structures of 25 μm as well embedded NiCr resistors. LTCC MCM's using etched thin film fine lines have been evaluated. GaAs discrete and MMIC dices take relevant role in hermetic cavities development for MHIC's in C-X-Ku-Ka bands. Last prototyping and space qualification work is going to develop high-tech mixed solutions hybrids based on LTCC with thin film metallizations for MW applications, and HTCC with fine lines for MCM's.
