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Design of elliptical-shaped reconfigurable patch antenna with shunt capacitive RF-MEMS switch for satellite applications

Published online by Cambridge University Press:  17 December 2020

Bokkisam Venkata Sai Sailaja  and
Ketavath Kumar Naik Open the ORCID record for Ketavath Kumar Naik [Opens in a new window]
Bokkisam Venkata Sai Sailaja
Affiliation:
Department of Electronics and Communication Engineering, KLEF (Deemed to be University), Vaddeswaram, Guntur522502, India
Ketavath Kumar Naik*
Affiliation:
Department of Electronics and Communication Engineering, KLEF (Deemed to be University), Vaddeswaram, Guntur522502, India
*
Author for correspondence: Ketavath Kumar Naik, E-mail: kumarvtr@gmail.com
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Abstract

In this paper, non-uniform meandered line shunt capacitive RF-MEMS switch is presented at an elliptical patch etched with a split-ring resonator (SRR) for satellite communication applications. The non-uniform meander line shunt capacitive is a fixed-fixed type of RF-MEMS switch that is introduced in this model antenna. The proposed antenna design is resonated at 10.46 GHz with the return loss of −37.6 dB. The performance evolution of the proposed antenna design is evaluated with and without integrated RF-MEMS switch on the proposed antenna SRR. It is observed that the proposed model at the ON-state switch resonates at 10.57 GHz frequency with the return loss of −30 dB. Similarly, at the OFF-state switch, it resonates at 10.53 GHz frequency with the return loss of −43 dB. Al3N4 (aluminum nitride) is used for the switch as a dielectric material, hence the switch attains higher isolation. The actuation voltage of 7.9 V is required for the switch to actuate from ON to OFF state. The switch attains minimum insertion and return loss which is discussed in further sections. The proposed antenna is fabricated and tested by a vector network analyzer; there is a good agreement between the simulated and measured results.

Keywords

CSRRmicrostrip patch antennareconfigurableresonance frequencyreturn loss
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 9 , November 2021 , pp. 969 - 978
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Copyright
Copyright © The Author(s), 2020. Published by Cambridge University Press in association with the European Microwave Association

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