# Design of a 1x4 CPW Microstrip Antenna Array on PET Substrate for Biomedical Applications

## TL;DR

This paper presents a low-cost, flexible 1x4 CPW microstrip antenna array on PET substrate, suitable for biomedical wearable and implantable applications, with promising simulated and measured performance at 2.68 GHz.

## Contribution

It introduces a novel, cost-effective, transparent antenna array on PET for biomedical use, with fabrication using adhesive copper foil and validated performance.

## Key findings

- Resonates at 2.68 GHz with 10 dBi gain
- Fabricated prototype matches simulated results
- Cost-efficient design suitable for wearable medical devices

## Abstract

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, has 1x4 radiating elements and measures only 280 x 192 mm2. The antenna array resonates at 2.68 GHz and has a peak-simulated gain of 10 dBi. A prototype is also fabricated, and the conductive patterns are drawn using cost-efficient 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 born-worn applications, including wireless powering of implantable medical devices.

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Source: https://tomesphere.com/paper/1906.10554