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2020-01-09

Wide-Narrow Switchable Bands Microstrip Antenna for Cognitive Radios

By Ros Marie C. Cleetus and Gnanadhas Josemin Bala
Progress In Electromagnetics Research C, Vol. 98, 225-238, 2020
doi:10.2528/PIERC19102808

Abstract

We introduce a six-switch integrated ultra wideband (UWB) - frequency reconfigurable system for cognitive radio applications. With respect to the requirements of the cognitive radio, this proposed design incorporates a UWB section for sensing the frequency spectrum, and the same design is frequency reconfigured using switches to get narrow bands for communicating within the spectrum. The proposed design has a compact size of 40 mm x 40 mm x 1.6 mm and is printed on an FR4 substrate with relative permittivity 4.4. The first configuration of switches allows the antenna to have UWB characteristics from 3.10 to 12 GHz and beyond as per simulations and 3.13 to 12 GHz and beyond as per measurements. Configurations II to V cover the ultrawide band from 3.54 to 12 GHz through five narrow bands. Measured results match well with the simulated one. The comparative analysis of the antenna in terms of frequency reconfigurability is also included in this work which proves that the proposed design is an effective candidate for Cognitive Radio applications.

Citation


Ros Marie C. Cleetus and Gnanadhas Josemin Bala, "Wide-Narrow Switchable Bands Microstrip Antenna for Cognitive Radios," Progress In Electromagnetics Research C, Vol. 98, 225-238, 2020.
doi:10.2528/PIERC19102808
http://www.jpier.org/PIERC/pier.php?paper=19102808

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