A New Type of High Bandwidth RF MEMS Switch - Toggle Switch

  • Published : 2002.12.01

Abstract

A new type of RF MEMS switch for low voltage actuation, high broadband application and high power capability is presented. Mechanical and electromagnetic simulations of this new RF MEMS switch type are shown and the fabrication process and measurement results are given. The switching element consists of a cantilever which is fixed by a suspension spring to the ground of the coplanar line. The closing voltage is 16V. The switches exhibit low insertion loss (<0.85dB@30GHz) with good isolation (>22dB@30GHz).

Keywords

References

  1. K. E. Petersen, 'Micromechanical Switches on Silicon', IBM J. Res. Develop., Vol. 23, No.4, pp. 376-385, July 1979 https://doi.org/10.1147/rd.234.0376
  2. C. L. Goldsmith, Z. Yao, S. Eshelman, D. Denniston, 'Performance of Low-Loss RF MEMS Capacitive Switches', IEEE Microwave and Guided Let. Vol. 8, No, 8, pp. 269-271, 1998 https://doi.org/10.1109/75.704410
  3. E. R. Brown, 'RF-MEMS Switches for Reconfigurable Integrated Circuits', IEEE Trans. Microwave Theory Tech., Vol. 46, No. 11, pp. 1868-1880, Nov. 1998 https://doi.org/10.1109/22.734501
  4. J. J. Yao, 'RF MEMS from a device perspective', J. Micromech. Microeng. Vol. 10, 2000 pp. R9-R38 https://doi.org/10.1088/0960-1317/10/4/201
  5. G. W. Rebeiz, J. B. Muldavin, 'RF MEMS Switches and Switch Circuits', IEEE Microwave Magazine, Vol. 2, No. 4, Dec. 2001, pp. 59-71 https://doi.org/10.1109/6668.969936
  6. H. J. De Los Santos, 'Introduction to Microelectromechanical (MEM) Microwave Systems', Artech House, Boston, London 1999
  7. S. P. Pacheco, L. P. B. Katehi and C.-T. Nguyen, 'Design of Low Actuation Voltage RF MEMS Switch', 2000 IEEE MTT-S Digest, pp. 165-168 https://doi.org/10.1109/MWSYM.2000.860921
  8. D. Hah, E. Y oon, and S. Hong, 'A Low Voltage Actuated Micromachined Microwave Switch using Torsion Springs and Leverage', 2000 IEEE MTT-S Digest, pp. 157-160 https://doi.org/10.1109/MWSYM.2000.860913
  9. K.M. Strohm, B. Schauwecker, D. Pilz, W. Simon, J.-F. Luy: 'RF-MEMS Switching Concepts for High Power Applications', IEEE Topical Meeting on Silicon Monolithic Integrated Circuits in RF systems, pp. 42-46, Ann Arbor, Michigan, USA, 12.-14. Sept. 2001 https://doi.org/10.1109/SMIC.2001.942338
  10. K.M. Strohm, C.N. Rheinfelder, A. Schurr, J.-F. Luy, 'SIMMWIC Capacitive RF Switches', 29th. European Microwave Conference, Munich 1999, Vol. I, pp. 411-414 https://doi.org/10.1109/EUMA.1999.338387
  11. D. Pilz, K. M. Strohm, J.-F. Luy, 'SIMMWIC-MEMS $180^{\circ}$ Switched Line Phase Shifter', 2000 Topical Meeting on Silicon Monolithic Integrated Circuit in RF Systems, 26th-28th April, 2000, Garmisch, Germany, pp. 113-115 https://doi.org/10.1109/SMIC.2000.844311
  12. S. Pacheco, C. T. Nguyen, and L. P. B. Katehi, 'Micromechanical Electrostatic K-Band Switches' 1998 IEEE MTT-S Digest, pp. 1569-1572 https://doi.org/10.1109/MWSYM.1998.700675
  13. L. B. Katehi, 'Si-Based MEMS and Micromachined Circuits for Wireless Cmmunications Systems', II Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, 26th-28th April 2000, Garmisch, pp. 5-8
  14. L. B. Katehi, S. Pacheco, D. Peroulis, B. Perlman 'RF MEMS for Wireless Communications Systems', I VDE World Microtechnologies Congress MICRO.tec 2000, Sept. 25-27, 2000 Expo Hannover, Germany, Proc. Vol. 2, pp. 89-91
  15. M. UIm, T. Walter; R. Mueller-Fiedler, K. Voigtlaender and E. Kasper, 'K-Band Capacitive MEMS-Switches', II Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems, 26th-28th April 2000, Garmisch https://doi.org/10.1109/SMIC.2000.844313
  16. M. UIm, T. Walter, J. Schier, R. Mueller-Fiedler and E. Kasper
  17. 'Microelectromechanical Capacitive RF Switches on High Resistivity Silicon Substrates'; VDE World Microtechnologies Congress MICRO.tec 2000, Sept. 25-27, 2000 Expo Hannover, Germany, Proc. Vol. 2, pp. 93-96
  18. Patent-Nr.: 10152945.7, Deutsches Patentamt, 10 / 2001
  19. J. Mehner, F. Bennini, W. Dotzel: CAD for Microelectromechanical Systems. System Design Automation - Fundamentals, Principles, Methods, Examples, pp. 111-132. Kluwer Academic Publishers, Boston 2000
  20. IMST GmbH, 'User and Reference Manual for the 3D EM Time Domain Simulator Empire', http://imst254.imst.de/microw/products/empire/downloads/empire.pdf, July 2001