A flexible CPW-fed antenna for ISM and cellular bands fabricated by laser ablation
Flexible electronics attract great interest due to their wide opportunities for practical application in the field of wireless communication, personalized medicine, security, etc. Flexible wireless technologies require a low profile, lightweight, and compact antennas. The goal of this work was to design and fabricate an antenna on a flexible dielectric substrate for the ISM range and 2G/3G/4G standards of cellular bands. Numerical simulations were carried out with the help of ANSYS HFSS software. Dimensions of the antenna (40mm x 80mm) were optimized to work in the ISM band and 2G/3G/4G standards of cellular bands. It was established that the operating frequency range in terms of return loss no worse than 10 dB is 2 GHz (from 1.5 to 3.5 GHz). Thus, the designed antenna operates in the ISM band (2.4-2.5 GHz) and in the cellular frequency range of the 1710 - 1785 MHz (2G cellular band),1935 - 1950 MHz (3G cellular band) and 2500 - 2700 MHz (4G cellular band). Studies of antenna characteristics at varied bends have shown that the main operating range in terms of return loss level not worse than 10 dB practically does not change. We use our original approach based on magnetron sputtering and laser ablation to fabricate the designed antenna. The fabrication process is in progress now. The results of the experimental study and comparison of experimentally and numerically obtained results will be presented at the conference. In the future, we are going to miniaturize the antenna design to dimensions of the order of 20x20 mm. This work was supported by grant No. 17-79-20243 of Russian Scientific Foundation.
Chistyakov I. A
Saratov State University, JSC "RPC "ALMAZ"
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