The text explains the designing of metamaterials microstrip patch antennas for medical applications, photonic crystals of millimeter wave signals for 5G communications, dual-band miniaturized circular antennas for wireless networks, and ultra-thin compact flexible antennas for wearable applications.

S. Kannadadhasan is working as an Associate Professor and HOD in the department of Electronics and Communication Engineering at Study World College of Engineering, Coimbatore, Tamil Nadu, India. He completed his Ph.D. in the field of smart antennas at Anna University in 2022. He has thirteen years of teaching and research experience. He obtained his B.E. in ECE from Sethu Institute of Technology, Kariapatti, in 2009 and his M.E. in Communication Systems from Velammal College of Engineering and Technology, Madurai, in 2013. He obtained his M.B.A. in Human Resources Management from Tamil Nadu Open University, Chennai. He has published around 110 papers in the reputed international journals indexed by SCI, Scopus, Web of Science, and Major Indexing, and more than 250 papers have been presented or published in national and international journals and conferences. Besides, he has also contributed a book chapter. He also serves as a board member, reviewer, speaker, session chair, and member of the advisory and technical committees of various colleges and conferences. He is also to attend the various workshops, seminars, conferences, faculty development programmes, STTP, and online courses. His areas of interest are smart antennas, digital signal processing, wireless communication, wireless networks, embedded systems, network security, optical communication, microwave antennas, electromagnetic compatibility and interference, wireless sensor networks, digital image processing, satellite communication, cognitive radio design, and soft computing techniques. He is a member of SMIEEE, ACM, IET, ISTE, FIEI, FIETE, CSI, IAENG, SEEE, IEAE, INSC, IARDO, ISRPM, IACSIT, ICSES, SPG, SDIWC, IJSPR, and the EAI Community.

R. Nagarajan received his B.E. in Electrical and Electronics Engineering from Madurai Kamarajar University, Madurai, India, in 1997. He received his M.E. in Power Electronics and Drives from Anna University, Chennai, India, in 2008. He received his Ph.D in Electrical Engineering from Anna University, Chennai, India, in 2014. He has worked in the industry as an Electrical Engineer. He is currently working as Professor of Electrical and Electronics Engineering at Gnanamani College of Technology, Namakkal, Tamilnadu, India. His current research interest includes Power Electronics, Power System, Soft Computing Techniques and Renewable Energy Sources.

1. Microwave Metamaterial Absorbers: Design and Applications. 2. Design of Monopole Circular Patch Antenna Based on DGS for UWB Applications. 3. Ultra-Wideband Circular Curve Shape Fractal Monopole Antenna. 4. Design and Analysis of an UWB Antenna with Reduced SAR for Early Detection of Brain Tumour. 5. Fractal Antennas in Medicine: A Comprehensive Review of Design, Performance, and Medical Applications. 6. Design of Flexible Antenna Using Felt Substrate for ISM Band Applications. 7. Design and Analysis of Foam-Based Flexible Wearable MSA for Healthcare Applications. 8. Bandwidth and Gain Enhancement of a Slotted S-shaped Microstrip Patch Antenna for 5G Application. 9. Advancements in Biomedical Antennas: Exploring Diverse Designs for Wireless Connectivity in Medical Applications. 10. Analysis of Antenna for Biomedical Applications. 11. Optimized Connectivity: Antennas in Industrial and Medical Applications for Enhanced Wireless Communication. 12. Design of 3 GHz Rectangular Microstrip Patch Antenna and Modeling Using Surface-Fitting Technique. 13. Design of Microstrip Patch Antenna for Skin Cancer Detection.