naa a22 4500 510797954 CHVBK 20180411083343.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11277-013-1012-4 doi (NATIONALLICENCE)springer-10.1007/s11277-013-1012-4 Design and Simulation of a Novel Micromachined Frequency Reconfigurable Microstrip Patch Antenna [Elektronische Daten] [Mahdi Nasiri, Hadi Mirzajani, Ehsan Atashzaban, Habib Ghavifekr] In this paper, a novel model of a frequency reconfigurable microstrip patch antenna based on MEMS (microelectromechanical system) technology is introduced. Fabrication process of the proposed antenna is comprised of bulk and surface micromachining. Patch of the antenna is deposited over a silicon platform. The platform is created by structuring the silicon membrane which is formed through bulk micromachining of a silicon chip. The patch and the platform beneath it are discretized to facilitate their vertical displacement over underside air gap. Thermal actuation is used as driving mechanism. Operational mechanism of the antenna is such that by downward relocation of the patch, its resonant frequency shifts downward. Thermal actuators are connected to the platform and applying voltage to them cause downward shift in resonant frequency of the antenna. FEM (finite element method) simulations confirm mechanical and microwave performances of the antenna which are investigated by theoretical analyses. From mechanical point of view, antenna has tolerable mechanical stability and microwave point of view indicates that return losses are good (below $$-$$ 10dB) and radiation patterns are very close to each other with reasonable gains. Moreover VSWR is less than 2 throughout the frequency tuning range. In the proposed antenna by applying a CMOS compatible voltage in the range of 0-4.5V to each thermal actuator, the resonant frequency of the antenna shifts from 17.37GHz in up-sate position to 15.07GHz in down-state position. As a result of this frequency shift, a frequency tuning range of 2.3GHz with bandwidths of 3.9% in up-state and 1.4% in down-state positions is achieved. Springer Science+Business Media New York, 2013 Reconfigurable microstrip patch antenna nationallicence Micromachining nationallicence MEMS nationallicence Thermal actuator nationallicence Discretized patch nationallicence Nasiri Mahdi Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut Mirzajani Hadi Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut Atashzaban Ehsan Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut Ghavifekr Habib Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/1(2013-09-01), 259-282 0929-6212 72:1<259 2013 72 11277 https://doi.org/10.1007/s11277-013-1012-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1012-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nasiri Mahdi Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut NATIONALLICENCE 700 1- Mirzajani Hadi Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut NATIONALLICENCE 700 1- Atashzaban Ehsan Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut NATIONALLICENCE 700 1- Ghavifekr Habib Microelectronic Research Lab, Electrical Engineering Department, Sahand University of Technology, Tabriz, Iran aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/1(2013-09-01), 259-282 0929-6212 72:1<259 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer