Influence of Feed-Line Integration on Flexible Sensing Antenna Performance

This article explores the effect of the integration of an SMA (Sub Miniature Version A) connector on the performance of a (Coplanar waveguide) CPW-Fed circular ring antenna printed on a PET (polyethylene terephthalate) substrate using silver ink. This work aims to make a highly flexible and reliable antenna system suitable for modern wearable and portable electronic appliances and products. The design and fabrication procedures are portrayed in detail in the paper, with an emphasis on the difficulties in preserving mechanical flexibility and electrical performance. The integration of the SMA connector has carefully been optimized to ensure minimal signal loss and robust connection, even under mechanical stress. Experimental results show that the CPW-fed circular ring antenna, with a securely attached SMA connector and desirable performance metrics, including consistent return loss, validates its potential for use in flexible electronics. The results show that silver ink on PET substrates works well for producing robust and efficient antenna for use in next-generation communication devices.