Design of a 1×4 CPW Microstrip Antenna Array on PET substrate for Biomedical Applications

In this paper, a single layer Coplanar Waveguide-fed microstrip patch antenna array is presented for biomedical applications. The proposed antenna array is realized on a transparent and flexible Polyethylene Terephthalate substrate. The design has 4 radiating elements with single CPW feed and measures only 280 × 192 mm
²
. The antenna array resonates at 2.68 GHz and has a peak gain of 10 dBi. A prototype is fabricated using cost effective adhesive copper foils instead of conventional copper or silver nanoparticle ink. The corresponding measured results agree well with the simulated results. The proposed low-profile and cost-efficient transmit antenna array has the potential for wearable applications, including wireless powering of implantable medical devices.