Design, simulation and analysis of rf-mems switches for reconfigurable antennas thesis submitted in partial fulfillment of the requirements for the degree of doctor of philosophy by ashish kumar sharma id no 2010phxf001p under the supervision of dr navneet gupta birla institute of. The aim of this thesis is to perform an electrical characterization and sev- eral reliability tests on different kind of rf-mems switches in order to analyze which are the weaknesses and the strengths of this new technology electrical characterizations have been done using two different measurement systems the first, based. This paper presents a novel way of controlling the bouncing phenomenon commonly present in the radio frequency microelectromechanical systems (rf mems) switches using a double-electrode configuration the paper discusses modeling bouncing using both lumped parameter and beam models the simulations of. A low actuation voltage rf mems shunt capacitive switch has been designed and simulated for use in x-band (8-12ghz) applications the mems switch is a freely moving membrane over coplanar waveguide double meander structure of tuned dual beam is used here to improve the isolation of switch actuation is. Control of the entire device electrostatics in this context, the current thesis proposes an one-dimensional analytical modeling of a novel symmetric double- gate soi cmosfet transistor, covering the dc and ac analyses, as well as its potential nano-electronics and rf mems applications our methodology.
In particular, tunable filters are important components in the rf/microwave front- ends for band/channel selection and image rejection the objective of this dissertation is to develop the technologies and design concepts for highly tunable low loss front-end filters for the next generation reconfigurable wireless communication. In the frame of this thesis, different types of structures have been investigated and designed the first structure consists of a microstrip patch antenna which is loaded with a microstrip stub whose length is controlled by rf mems switches in the other structure, the length of a microstrip patch antenna is changed by. Rf mems capacitive shunt switches with a dielectric-on-metal (dom) capacitor, which are widely used for microwave applications in the communication field lenka m k 2012 study of rf mems spst shunt and spdt shunt–shunt switches for x-band and ku-band applications iit madras ms thesis.
This paper presents a new type of capacitive shunt rf-mems switch in the proposed design, float metal concept is utilized to reduce the rf overlap area between the movable structure and central conductor of cpw for improving the insertion loss of the device this has been achieved without affecting the down- state. Abstract: this paper presents novel design of various configurations of cantilever type radio frequency micro electro mechanical systems (rf mems) series switch the paper emphasizes on study of actuation voltage of rf mems switches actuation voltages of uniform cantilever switches has been compared with. This article details about the design of a rf mems capacitive type shunt switch this switch has been designed in high frequency structure simulator (hfss) & the important radio frequency characteristics have been studied in this paper the electromagnetic behavior of this switch which is obtained. This paper presents a novel design approach of t-type rf mems switch cross over junction, implemented using symmetric toggle switch (sts) as a basic building maninder kaur, “study of capacitive type rf mems switch: design, fabrication and characterization”, phd thesis, kurukshetra university, kurukshetra, 2013.
This is to certify that the thesis entitled, “rf mems switches and phase shifters for microwave applications”, being submitted by mr sukomal dey for the award of the degree of doctor of philosophy to the centre for applied research in electronics, indian institute of technology delhi, new delhi, is a. Modeling and design of an rf-mems reconfigurable lc-based bandpass filter by hasan akyol a thesis submitted in partial fulfillment of the requirements for the degree of master of science august 2005 department of electrical & computer engineering carnegie mellon university pittsburgh, pennsylvania, usa. Also, to do the effort to come to my thesis defense dealing with all the associated troubles and making this day unforgettable i have had my phd, but they have had the “best family” degree: thanks to my iaia whom, as einstein adviced, i could finally explain the reliability problems of rf-mems which means. Goals of the thesis the potential in extending implementation of self-x features at sensory levels is enormous the first step in the research was a holistic 23 6 cmos-based monitoring of contact events a research group from purdue university has focused on improving the long term re- liability of rf mems.
Quality factors are the major problems associated with semiconductor based tuning components this thesis presents the design, fabrication and testing of two novel rf mems tunable capacitors the first tunable capacitor is designed using electrostatic repulsive-force actuators which produce an upward movement of the. Application, rf mems switches have to survive under extremely harsh environmental and operating conditions in particular the device should handle continuous bias voltage (at least for 10 years), 5 w of rf input power and around 1000 actuation cycles without meaningful electrical and mechanical failure the thesis.
Dimensional (3d) multi-port rf mems switches, and rf mems switch matrix integration one key objective of this thesis is to investigate novel configurations for planar multi-port (spnt), c-type, and r-type switches such switches represent the basic building blocks of switch matrices operating at microwave frequencies. High performance rf mems metal-contact switches and switching networks permalink authors patel, chirag d patel, chirag d publication date 2012-01-01 peer reviewed|thesis/dissertation escholarship an improved cantilever-based rf mems switch for high- power.
University of oslo department of physics modeling of a resistive contact rf-mems switch fabricated using drie master thesis per gisle dalsjø 1 december 2006. This thesis presents novel radio frequency microelectromechanical (rf mems) circuits based on the three-dimensional (3-d) micromachined copla- nar transmission lines whose geometry is re-configured by integrated mi- croelectromechanical actuators two types of novel rf mems devices are proposed the first is a. Rf mems switches have experienced increased use for telecommunication application in the last ten years due to their high performance compared to other microelectronic switches a design of the dc contact rf mems switch was proposed in this thesis the design was optimized in the terms of activation mechanism,. Rf mems switches and switch circuits modeling of rf mems switches and development of rf mems capacitive switches and mems tunable filters thesis for the degree of dr ing trondheim, august 2008 norwegian university of science and technology faculty of information technology, mathematics and electrical.