The miniaturization of electronics and sensors and the progressive integration, not only in a multitude of wearable devices but also in garments themselves, is fostering the development of what we nowadays call electronic textiles or e-textiles. As the demand of wearable smart textile systems continues to increase, the interest in body-worn antennas is growing. The expanding wireless applications for smart interactive textile systems, such as IoT and 5G, demand a smart interface between humans and technology. Textile antennas are ideal candidates for such interfaces as they may be easily integrated into clothing.

Clothing provides sufficient area to place antennas. The textile antennas ensure wearing comfort owing to their flexibility, conformability and lightness. However, their design and fabrication is a challenging task since it requires novel ideas and solutions as textile antennas demand miniaturization and sustainability in adverse conditions. The antennas are worn close to the human body; therefore, the electromagnetic radiations may be present a hazardous risk to humans. Thus, the antenna should present the Specific Absorption Rate (SRA) within the safe limits defined by FCC and European standards. Metamaterial techniques seem promising options in terms of low cost and ease of implementation to reduce the SAR. There are numerous applications of textile and wearable antennas including medical, telemedicines, smart home and security. The terahertz (THz) antennas, which have the features of small size, wide frequency bandwidth, and high data rate, are important devices for transmitting and receiving THz electromagnetic waves in the emerging THz systems.

This Special Issue aims to publish comprehensive original research and review articles on the design of efficient, wearable, and textile antennas for medical and wireless applications. This Special Issue focuses on the design and performance characterization of such antennas.

Potential topics include but are not limited to the following:

• Antenna design for IoT and biomedical applications
• Smart textile antennas
• Nano and terahertz antennas
• Microstrip textile antennas for wireless systems
• Optimization techniques in antenna design
• Frequency reconfigurable antennas
• Multiband fractal antenna for wireless applications
• Metamaterial based antennas
• RF, MEMS, NEMS devices for smart antenna design
• Antenna technology for microwave sensors
• Machine learning technique for antennas design and analysis
• Antenna technology for fibre optical sensor communication
• Use of antenna in underwater WDM optical sensor data communication
• VLC based antenna design
• Robustness to wearable antenna geometry distortion