High performance 3-dimensional hybrid-integrated switch matrix for Ka-band satellite communication applications based on ceramic multilayer technology. - In: Proceedings, (2007), S. 1-8
LTCC multilayer technology enables very compact 20 GHz switch unit for space applications. - In: Proceedings, (2007), S. 500-504
A 4x4 switch matrix had to be realized within the project KERAMIS (Ceramic Microwave Circuits for Satellite Communications) of the German space agency DLR: This project aims at the development of innovative and inexpensive components for future applications in multimedia satellite communications. The rationale of the project is to exploit the possibility of integrating passive and active components in LTCC multilayer structures. This opens possibilities to minimize the complexity of the semiconducting components. - The working frequency of the device was in the 20 GHz band. A six layer construction with 7 conducting levels was chosen. The semiconductor switch dies were countersinked in cavities on both the top and the bottom of the circuit. The active chips were mounted using electrically conductive epoxy and wire-bonded afterwards. For testing purposes additional cavities were situated on the top side. The matrix was hermetically sealed by covers on both sides. These covers were also made in LTCC technology. Due to the complexity of the circuit 50æm lines and spaces had to be applied using fine line screen printing. The minimum distance between the edges of the cavities and the wiring was 75 æm. For cavities and vias mechanical punching and laser cutting were used. - The paper describes the technological processes and their particularities applied to manufacture this ambitious circuit.
Tunable dielectric material embedded in LTCC for GHz-frequency-range applications. - In: Proceedings, (2007), S. 290-293
Miniaturized antenna arrays with an element separation down to [lambda]/10. - In: IEEE Antennas and Propagation Society international symposium, 2007, ISBN 978-1-4244-0878-8, (2007), S. 5897-5900
http://dx.doi.org/10.1109/APS.2007.4396894
Gas pressure sensing based on MEMS resonators. - In: IEEE sensors, 2007, ISBN 978-1-4244-1262-4, (2007), S. 1251-1254
http://dx.doi.org/10.1109/ICSENS.2007.4388636
Decoupling and matching network for miniaturised 3-port antenna arrays based on 180˚ couplers. - In: 2nd International ITG Conference on Antennas, 2007, ISBN 978-3-00-021643-5, (2007), S. 63-66
http://dx.doi.org/10.1109/INICA.2007.4353933
60 GHz patch antennas in LTCC technology for high data-rate communication systems. - In: 2nd International ITG Conference on Antennas, 2007, ISBN 978-3-00-021643-5, (2007), S. 186-189
http://dx.doi.org/10.1109/INICA.2007.4353959
Ultrabreitband-Sensorik in der medizinischen Diagnostik. - In: Proceedings, (2007), insges. 2 S.
Strain- and pressure-dependent RF response of microelectromechanical resonators for sensing applications. - In: Journal of micromechanics and microengineering, ISSN 1361-6439, Bd. 17 (2007), 10, S. 2016-2023
http://dx.doi.org/10.1088/0960-1317/17/10/013
Nanoelectromechanical devices for sensing applications. - In: Sensors and actuators, ISSN 0925-4005, Bd. 126 (2007), 1, S. 24-34
http://dx.doi.org/10.1016/j.snb.2006.10.049