Study of flexible monopole antenna with coplanar feeding structure fabricated by magnetron sputtering and laser ablation technologies

• Published in: 2019 Antennas Design and Measurement International Conference (ADMInC) pp. 138 - 140
• Main Authors: Starodubov, Andrey V., Serdobintsev, Alexey A., Galushka, Victor V., Ryabukho, Peter V., Kozhevnikov, Ilya O., Pavlov, Anton M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-10-2019
• Subjects: Antenna measurements; Copper; fabrication; flexible antenna; ISM bands; Laser ablation; magnetron sputtering; Microwave antennas; Nickel; Sputtering
• DOI: 10.1109/ADMInC47948.2019.8969323

In this paper, we deal with the study of flexible antennas for ISM range fabricated by our original approach based on magnetron sputtering and laser ablation. We used polyimide film with a thickness of 100 |xm as a flexible dielectric substrate. As a conductive layer we used oxygen free copper and nickel. We used a known sketch for the antenna with a coplanar feeding structure that has already numerically verified, fabricated by the inkjet printing technology and experimentally studied. We have fabricated several flexible antenna samples with coplanar feeding structure using our original approach. Results of scanning electron microscopy and optical microscopy studies of fabricated flexible antennas were considered. Antennas measurements were carried out with the help of an experimental setup based on the vector network analyzer. The experimental measurements were preceded by 1-port type calibration procedure in 0.3-3 GHz band on coaxial ends of cables using automated electronic calibration module. A comparison of obtained experimental results with the already known results from several scientific papers was considered. Fabricated antennas demonstrate reflection loss not worse than 16 dB throughout full ISM band (2.4-2.5 GHz). Obtained experimental results are in good agreement with the numerical ones and other published experimental studies.