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Modular Ka-band switch matrices using two RF MEMS technologies

  • Sascha A. Figur (a1), Erika Meniconi (a1), Ulrich Prechtel (a1), Volker Ziegler (a1), Roberto Sorrentino (a2), Larissa Vietzorreck (a3) and Bernhard Schoenlinner (a1)...

Abstract

This paper presents the design and measurement of two different switch matrix modules based on Radio Frequency Microelectromechanical System (RF MEMS) switches. The operational frequency range is between 25.5 GHz and 26.5 GHz for data links between a Geostationary Earth Orbit (GEO) relay satellite and Low Earth Orbit (LEO) satellites. The switch matrix implements a key functionality for tracking the incident signals of the LEO satellites on the receive feed antenna array of the GEO satellite's reflector antenna. Two different technologies are used to build simplified switch matrix modules suitable for realizing the full functionality switching matrix. Rogers RT/Duroid 5880 with commercially available RF MEMS is used to build the first module, while EADS in house RF MEMS are integrated in Rogers Ultralam 3850 Liquid Crystal Polymer (LCP) for the second module. Maximum insertion losses of 8.5 dB and 10.2 dB have been measured for the Rogers RT/Duroid 5880 and the LCP module, respectively. Isolation is higher than 45 dB and a minimum return loss of 15 dB is shown. Finally, the measured losses in the LCP module are analyzed and suitable improvements are discussed.

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Corresponding author

Corresponding author: S.A. Figur Email: sascha.figur@eads.net

References

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[1]Greda, L. et al. A satellite multibeam antenna for high-rate data relays, in ESA ESTEC – 32nd ESA Antenna Workshop on Antennas for Space Applications, Noordwijk, Niederlande, 2010, 15.
[2]Siegel, C.; Ziegler, V.; Schoenlinner, B.; Prechtel, U.; Schumacher, H.: Simplified RF-MEMS switches using implanted conductors and thermal oxide, in 36th European Microwave Conf., Manchester, UK, 2006, 17351738.
[3]Greda, L.A.; Knuepfer, B.; Knogl, J.S.; Heckler, M.V.T.; Bischl, H.; Dreher, A.: A multibeam antenna for data relays for the German communications satellite Heinrich-Hertz, in Fourth European Conf. on Antennas and Propagation (EuCAP), Barcelona, Spain, 2010, 14.
[4]Figur, S.A.; Schoenlinner, B.; Prechtel, U.; Vietzorreck, L.; Ziegler, V.: Simplified 16 × 8 RF MEMS switch matrix for a GEO-stationary data relay, in German Microwave Conf. 2012, Illmenau, Germany, 2012, 14.
[5]Inayat, I.: Hybrid integration of RF MEMS switches with LTCC substrate for the design of 8 × 16 switch matrix, Master's thesis, Technische Universitaet Muenchen, Munich, Germany, 2009, 1152
[6]Meniconi, E.; Schoenlinner, B.; Prechtel, U.; Hartmann, J.; Sorrentino, R.; Ziegler, V.: Broadband RF-MEMS based switching network for automated measurements of multifeed antennas, in European Microwave Integrated Circuits Conf. (EuMIC) 2011, Manchester, UK, 2011, 676679.
[7]Kingsley, N.: Liquid crystal polymer: enabling next-generation conformal and multilayer electronics, Microw. J. 5 2008, 188200.
[8]Haubold, M.; Figur, S.; Schoenlinner, B.; Kurth, S.; Gessner, T.: Low temperature wafer bonding technology for RF based MEMS devices, in Smart Systems Integration 2013, Amsterdam, Netherlands, 2013.

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Modular Ka-band switch matrices using two RF MEMS technologies

  • Sascha A. Figur (a1), Erika Meniconi (a1), Ulrich Prechtel (a1), Volker Ziegler (a1), Roberto Sorrentino (a2), Larissa Vietzorreck (a3) and Bernhard Schoenlinner (a1)...

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