# Next-Generation Biomedical Microwave Antennas: Metamaterial Design and Advanced Printing Manufacturing Techniques

## TL;DR

This paper reviews how new printing techniques and metamaterials are enabling compact, flexible biomedical antennas for wearable and implantable healthcare systems.

## Contribution

The paper introduces the integration of metamaterials and advanced printing methods to create biocompatible antennas with improved performance for biomedical applications.

## Key findings

- Printed conductive processes enable conformal antennas on biodegradable and flexible substrates.
- Metamaterials improve antenna miniaturization, gain, and tissue isolation for better performance in biomedical systems.
- AI-assisted optimization supports the development of adaptive, stretchable antennas for personalized healthcare.

## Abstract

What are the main findings?
Additive manufacturing and printed conductive processes (inkjet, aerosol jet, and screen printing) now enable conformal, biocompatible antennas on textiles, elastomers, and biodegradable substrates for wearable and implantable biomedical systems.Metamaterial and metasurface techniques significantly improve miniaturization, electromagnetic coupling, gain, and tissue isolation, supporting optimized operation under realistic body-loading conditions.

Additive manufacturing and printed conductive processes (inkjet, aerosol jet, and screen printing) now enable conformal, biocompatible antennas on textiles, elastomers, and biodegradable substrates for wearable and implantable biomedical systems.

Metamaterial and metasurface techniques significantly improve miniaturization, electromagnetic coupling, gain, and tissue isolation, supporting optimized operation under realistic body-loading conditions.

What are the implication of the main findings?
These technologies support biomedical antennas that are more compact, adaptive, and mechanically compliant, allowing seamless integration with the human body.The resulting devices enable higher performance in continuous monitoring, diagnostics, wireless power transfer, and therapeutic applications, accelerating the development of next-generation healthcare systems.

These technologies support biomedical antennas that are more compact, adaptive, and mechanically compliant, allowing seamless integration with the human body.

The resulting devices enable higher performance in continuous monitoring, diagnostics, wireless power transfer, and therapeutic applications, accelerating the development of next-generation healthcare systems.

Biomedical antennas are essential components in modern healthcare systems, supporting wireless communication, physiological monitoring, diagnostic imaging, and therapeutic energy delivery. Their performance is strongly influenced by proximity to the human body, creating challenges such as impedance detuning, signal absorption, and size constraints that motivate new materials and fabrication approaches. This work reviews recent advances enabling next-generation wearable and implantable antennas, with emphasis on printed electronics, additive manufacturing, flexible hybrid integration, and metamaterial design. Methods discussed include 3D printing and inkjet, aerosol jet, and screen printing for fabricating conductive traces on textiles, elastomers, and biodegradable substrates, as well as multilayer Flexible Hybrid Electronics that co-integrate sensing, power management, and RF components into thin, body-conforming assemblies. Key results highlight how metamaterial and metasurface concepts provide artificial control over dispersion, radiation, and near-field interactions, enabling antenna miniaturization, enhanced gain and focusing, and improved isolation from lossy biological tissue. These approaches reduce SAR, stabilize impedance under deformation, and support more efficient communication and energy transfer. The review concludes that the convergence of novel materials, engineered electromagnetic structures, and AI-assisted optimization is enabling biomedical antennas that are compact, stretchable, personalized, and highly adaptive, supporting future developments in unobtrusive monitoring, wireless implants, point-of-care diagnostics, and continuous clinical interfacing.