Design and characterization of a tunable patch antenna loaded with capacitive MEMS switch using CSRRs structure on the patch

Abstract In this paper, the design and characterization of a tunable patch antenna loaded with complementary split ring resonators (CSRRs) on the patch have been realized. To achieve tunable resonant frequency, bandwidth and radiation pattern, the antenna is further loaded with coplanar waveguide (CPW) on which Microelectromechanical System (MEMS) capacitive switches are placed periodically. The tunable property is achieved, when the switches moves from up state with the capacitive gap 1.5 μm to down state having capacitive gap of 1 μm. A parametric analysis has been presented to check the sensitivity of the antenna in terms of S11 parameter by varying different parameters of the MEMS switches and CSRRs. This work, strives to improve the degree of reconfigurability with increase in the number of switches. The value of actuation voltage to move switch from up to down state is 10.4 V, which is very low over the other design. The switches exhibit fundamental frequency 14.6 kHz, switching time 28.59 μs, and capacitance ratio 15.27. Simulation has been carried out in Ansoft HFSS v. 13 and the distinct characterization property of the tunable antenna is shown through simulation.

[1]  Tayfun Akin,et al.  Reconfigurable antennas using RF-MEMS research in Turkey , 2011, 2011 IEEE MTT-S International Microwave Symposium.

[2]  L.P.B. Katehi,et al.  Microelectromechanical systems (MEMS) actuators for antenna reconfigurability , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[3]  M. Tentzeris,et al.  RF MEMS Sequentially Reconfigurable Sierpinski Antenna on a Flexible Organic Substrate With Novel DC-Biasing Technique , 2007, Journal of Microelectromechanical Systems.

[4]  Linda P. B. Katehi,et al.  MEMS and Si micromachined circuits for high-frequency applications , 2002 .

[5]  T. Akin,et al.  Frequency Tunable Microstrip Patch Antenna Using RF MEMS Technology , 2007, IEEE Transactions on Antennas and Propagation.

[6]  F. D. Flaviis,et al.  Reconfigurable scan-beam single-arm spiral antenna integrated with RF-MEMS switches , 2006, IEEE Transactions on Antennas and Propagation.

[7]  Gabriel M. Rebeiz,et al.  High-Reliability Miniature RF-MEMS Switched Capacitors , 2008, IEEE Transactions on Microwave Theory and Techniques.

[8]  S. Nikolaou,et al.  UWB Elliptical Monopoles With a Reconfigurable Band Notch Using MEMS Switches Actuated Without Bias Lines , 2009, IEEE Transactions on Antennas and Propagation.

[9]  Surjeet Singh,et al.  Design and Simulation of RF MEMS Capacitive type Shunt Switch & its Major Applications , 2013 .

[10]  Erik Öjefors,et al.  Micromachined antennas for integration with silicon based active devices , 2004 .

[11]  Tayfun Akin,et al.  Empirical Formulation of Bridge Inductance in Inductively Tuned RF MEMS Shunt Switches , 2009 .

[12]  D. Pozar.  Microwave Engineering , 1990 .

[13]  Gabriel M. Rebeiz.  RF MEMS: Theory, Design and Technology , 2003 .

[14]  Bhaskar Gupta,et al.  Design, fabrication and characterization of miniature RF MEMS switched capacitor based phase shifter , 2014, Microelectron. J..

[15]  Linda P. B. Katehi,et al.  Micromachined patch antennas , 1998 .

[16]  Hadi Veladi,et al.  A Novel Multi-State Integrated RF MEMS Switch for Reconfigurable Antennas Applications , 2013 .

[17]  S. Senturia.  Microsystem Design , 2000 .

[18]  Shiban K. Koul,et al.  Design and Electrical Characterization of Wafer-level Micro-package for GaAs-based RFMEMS Switches , 2013 .

[19]  Ngasepam Monica Devi,et al.  RF MEMS and CSRRs-based tunable filter designed for Ku and K bands application , 2015 .

[20]  Constantine A. Balanis,et al.  Modern Antenna Handbook , 2012 .

[21]  Youssef Tawk,et al.  Reconfigurable Antennas for Wireless and Space Applications , 2012, Proceedings of the IEEE.