A low-voltage and low-power RF MEMS series and shunt switches actuated by combination of electromagnetic and electrostatic forces
- 11 July 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 53 (7), 2450-2457
- https://doi.org/10.1109/tmtt.2005.850406
Abstract
This paper reports new RF microelectromechanical systems (MEMS) switches actuated by the combination of electromagnetic and electrostatic forces for low-voltage and low-power operation. The proposed RF MEMS switches have utilized the proper combination of two actuation mechanisms: taking advantage of the large actuation force from electromagnetic actuation for initial movement and the low-power feature from electrostatic actuation for holding the actuator position. Both series- and shunt-type switches have been implemented using the proposed actuation mechanism. From the fabricated switches, feasibility of operation has been successfully demonstrated. The fabricated switches can be operated within several hundred microseconds. In the series-type switch, the isolation has been measured as -34dB and insertion loss as -0.37dB at 20 GHz. In the shunt type switch, the isolation is -20.7dB and insertion loss is -0.85dB at 19.5 GHz. The proposed RF MEMS switches are mechanically robust and the combination of electromagnetic and electrostatic actuations makes it possible to achieve excellent switching characteristics at low power and low voltage below 5 V.Keywords
This publication has 14 references indexed in Scilit:
- Low-Voltage High-Isolation DC-to-RF MEMS Switch Based on an S-shaped Film ActuatorIEEE Transactions on Electron Devices, 2004
- A novel resonant-type GaAs SPDT switch IC with low distortion characteristics for 1.9 GHz personal handy-phone systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Electroplated rf MEMS capacitive switchesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Design of low actuation voltage RF MEMS switchPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Latching micromagnetic relaysJournal of Microelectromechanical Systems, 2001
- RF MEMS switches and switch circuitsIEEE Microwave Magazine, 2001
- High-isolation CPW MEMS shunt switches. 2. DesignIEEE Transactions on Microwave Theory and Techniques, 2000
- Contact physics of gold microcontacts for MEMS switchesIEEE Transactions on Components and Packaging Technologies, 1999
- Fully integrated magnetically actuated micromachined relaysJournal of Microelectromechanical Systems, 1998
- RF-MEMS switches for reconfigurable integrated circuitsIEEE Transactions on Microwave Theory and Techniques, 1998