oalogo2  

AUTHOR(S):

Raji George, C.R.S Kumar, S.A Gangal

 

TITLE

Design and Simulation of low actuation voltage Cantilever RF MEMS switches suitable for Reconfigurable antenna applications

pdf PDF

ABSTRACT

This paper presents a novel cantilever based RF MEMS series switch. The cantilever is of a dielectric material to prevent crosstalk and for isolation between the RF and DC signal. This switch has low actuation voltage and good RF performance in the frequency range from 2 to 12 GHz. Low actuation voltages are achieved by varying the spring constant of the beam. The spring constant of the beam can be varied by varying the geometry of the beam. We have introduced geometrical variations in the beam design that have led to low actuation voltage and good RF performance. A meander shaped beam is proposed which gives the least actuation voltage. The meanders in the beam reduce the spring constant without affecting the RF performance of the switch. The proposed design has a very low Pull in voltage of 6.64V. The RF performance of the switch shows that the Return loss is-25.65dB at 9.8GHz.The isolation is about-64.02dB and the insertion loss is about -0.2065dB at 9.7GHz

KEYWORDS

Reconfigurable Antenna, Cantilever, Pull in voltage, Spring Constant, meander

REFERENCES

[1] Deepali K. Borakhade. S.B.Pokle, “.Pentagon slot resonator frequency reconfigurable antenna for wideband reconfiguration” AEU International Journal of Electronics and Co mmunications, Volume 69, Issue 10, October 2015, Pages 1562-1568

[2] I. J. Hyeon, et al., "Package-Plat formed Linear/Circular Polarization Reconfigurable Antenna Using Integrated Silicon RF MEMS Switch," ETRI Journal, vol. 33, pp. 802-805, Oct 2011.

[3] F. M. Guo, et al., "The experimental model of micro-cantilever switch and its optimization model," in Nano/Micro Engineered and Molecular Systems (NEMS), 2010 5th IEEE International Conference on, 2010, pp.1-4.

[4]T. H. Lin, et al., "A study on the performance and reliability of magnetostatic actuated RF MEMS switches," MicroelectronicsReliability, vol. 49, pp. 59-65, Jan 2009.

[5] W. Han and R. J. Pryputniewicz, "Design, fabrication, andcharacterization of surface micromachined MEMS cantilever components," in sem-proceedings, 2007, pp. 1162-1170.

[6] N. J. R. Muniraj, "MEMS based humidity sensor using Si cantilever beam for harsh environmental conditions," Microsystem Technologies,vol. 17, pp. 27-29, 2011.

[7] G. Yanjue, et al., "Design optimization of cantilever Beam MEMS switch," in Industrial Mechatronics and Automation, 2009. ICIMA International Conference on, 2009, pp. 28-31.

[8] Rebeiz G.M., RF MEMS Theory: Theory, design and technology. Colorado: Wiley, 2003.

[9] Z. Wang, et al., "Contact physics modeling and optimization design of RF-MEMS cantilever switches," in Antennas and Propagation Society International Symposium, 2005 IEEE, 2005, pp. 81-84 Vol. 1A.

[10] M. Spasos, et al., "RF-MEMS switch actuation pulse optimization using Taguchi's method," Microsystem Technologies-Micro-and Nanosystems-Information Storage and Processing Systems, vol. 17, pp. 1351-1359,Aug 2011.

[11]Varadan V K, Vinoy K J and Jose K A ,”RF MEMS and Their Applications “,New York: Wiley, 2003.

[12]Peroulis D and Pacheco S P, Electromechanical considerations in developing low voltage RF MEMS switches, IEEE Transactions on Microwave Theory and Techniques, pp 259-270, 2003.

[13]AbbaspourSani E and Afrang S,A low voltage MEMS structure for RF capacitor switches, Progress in Electromagnetic Research ,pp 157-167 , 2006.

[14]Jaafar H,Sidek O and Miskam A,Design and Simulation of Microelectromechanical systems capacitive shunt switches,American Journal of engineering and applied science, pp 655-660, 2009.

[15]Maher bakri,Kassam and Raafat R Mansour, High Power Latching RF MEMS switches, IEEE Transaction on Microwave Theory and Techniques, Vol 63,Jan 2013.

[16] Z Wang et al,” Contact physics Modelling and Optimization Design of RF MEMS cantilever switches”, IEEE 2005.

[17] MohammadmahdiVakilian, et al. ,”Optimization of Cantilever –Based MEMS Switch used in reconfigurable antennas” IEEE-ICSE2012 Proc., 2012, Kuala Lumpur, Malaysia. 28t-dem.htm (24.04.2014).

Cite this paper

Raji George, C.R.S Kumar, S.A Gangal. (2018) Design and Simulation of low actuation voltage Cantilever RF MEMS switches suitable for Reconfigurable antenna applications. International Journal of Circuits and Electronics, 3, 19-28

 

cc.png
Copyright © 2018 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0