Performance of analysis crab leg based RF MEMS switch for defense and aerospace applications

Abstract

In this paper the design and modeling of capacitive shunt switch for k-ka band applications is presented. The proposed model for this design is the crab leg flexure. In order to reduce the squeeze film air damping, the perforated switch with reduced spring constant is designed. Analysis of designed switch has been carried out on the various parameters of the switch such as damping factor, switching time, quality factor and Eigen frequencies in order to design a reliable switch. The results indicate that the obtained pull in voltage is 3.1V for the dielectric gap of 1m and spring constant of 2.95N/m 2 . Switching time is observed as 1.2s and 2.15s for the gap of 1m and 1.5m respectively. The capacitance ratio i.e. Cdown/Cup KHz. Return loss is calculated as-44.85dB at a frequency of 1GHz and -25.68dB at a frequency of 27.5GHz and insertion loss is obtained as -0.0447db at 1GHz and -1.0379dB at 27.5GHz. The maximum peak isolation is observed as -59.5dB at 1GHz frequency and -71dB at 27.5GHz frequency.

Boosting the Electrostatic MEMS Converter Output Power by Applying Three Effective Performance-Enhancing Techniques

“…In Figure 1 c, the crab leg flexure is a modified version of the fixed–fixed flexure configuration. It has an added thigh to the beam which is used to minimize the peak stress [ 41 ]. This configuration is used to reduce the extensional axial forces of the beam [ 40 ].…”

Performance Analysis Of Low Pullin Voltage RF MEMS Switch For Reconfigurable Antenna Applications

“…Over the last few years, a rapid change in MEMS field took place which lead to the design of miniature devices with high transfer speed and reduced actuation voltages [1][2][3]. MEMS systems incorporate advantages and overcome switch drawbacks such as waveguiding, half-conductor switching devices [4][5][6][7]. In correspondence applications, RF MEMS switchs are the choice for substituting traditional switches.…”

“…In correspondence applications, RF MEMS switchs are the choice for substituting traditional switches. These traditional switches decrease radio frequency performance like loss of insulation, loss of insertion and loss of signals over 1GHz [8]. The devices created by MEMS technology are widely used in communication field.…”

A Low Power Cantilever-Based Metal Oxide Semiconductor Gas Sensor for Green House Applications

“…The gas detection sensors need more high sensitivity. The main principle of detection of gases through MOS gas sensors is by using voltage divider method [2][3][4][5]. These gas sensors have a crucial role in some of the fields like food, oil refineries, and household gas and for water treatment purposes.…”

“…[18][19][20] So that gas concentration can be measured due to change in the resistance of the material. The main application of this sensor are they help in monitoring of air quality and fermentation process in the preparation of wine and bread i.e,In food processing industries [21][22][23][24][25][26] .They are also used in agricultural related applications for the elimination of pests [25][26][27][28][29][30]. The first chapter covers explaining the physical structure of the gas sensor system and the second section discusses the mathematical modeling associated with the phase of detection.…”