Antennas still one of the major devices in any wireless application. They have direct impacts on the size, shape and performance of the global wireless system. The physical integration of antennas to devices is a major issue for the designers as they must deal with additional features like safety and regulation constraints. Nowadays, the tendency is to integrate more and more wireless devices as near as possible to the human body is known to be very hostile to RF signal owing of its absorbing properties. In this presentation ee will introduce a new concept for the design and the implementation of on body wearable antennas for wireless communication, in particular for 5G and internet of things. The main idea behind this new design is to use a group of elementary antennas with a specific feeding system that allows the realization of suitable radiation pattern with very large space coverage. The This specific design is fully compliant the SAR constraints and frequency masks. The group of antennas and their feeding system are integrated in the same design and can be fully uni-planar which allows their realization on flexible substrate like fabric. We will present the design approach as well as the simulation results. Some realizations and the experimental performance in both anechoic environment and real application will be presented and discussed. With proliferation of miniature wireless sensors every device (however low-tech it may be) is expected to have internet connectivity and there is a widespread Machine to Machine (M2M) and Machine to Human (M2H) and Human to Machine (H2M) interaction wirelessly. This is referred to popularly as Internet of Things (IoT), which will span roughly 200 billion devices worldwide in the near future. It is expected to be a challenge to have reliability and performance of wireless connectivity, which is mainly dependent on not only efficient antenna designs, but also flawless function of these antennas in very complicated environments. One of the key aspects of IoT is requirement of key components to enable communications between devices and objects. Objects need to be augmented with an Auto-ID technology, typically an RFID tag, so that the object is uniquely identifiable. In this talk, various modeling techniques, such as MoM, MLFMM, FEM, FDTD etc, will be presented. Also asymptotic, ray-based method such as the uniform theory of diffraction or Ray Launching geometrical optics (shooting and bouncing rays) will be presented for electrically extremely large RFID problems such as long distance indoor propagation. Also aiding IoT are mobile broadband networks specifically focusing on the next generation of standards, namely 5G. This talk also addresses some of these futuristic technologies that are laying the foundation for the 5G standards, highlighting the concept of massive MIMO that employs antenna arrays and beamforming techniques to address the high data rate demands for IoT.