This book explores the Antenna and Web technology towards implementation of compact, consistent and cost effective microwave sources, as well as the high sensitivity terahertz detectors. The Metamaterial technology provides a benefit of miniaturization and high efficiency also maintaining the suitable gain for effective microwave communications for the technology of the future. Emerging technologies play a vital role in the modernization of industries. New technologies help in transforming enterprises into a digital world. This technology is mainly helpful in manufacturing, energy, healthcare services and wireless applications markets. The advances in new materials and nanostructures such as Graphene will be helpful in miniaturization of antenna technology while simultaneously maintaining the desired output levels. Terahertz antenna characterization of bandwidth, impedance, polarization, etc. has not yet been methodically structured and it continues to be a major research challenge. Technology is indeed one of the fastest-growing agents in the present world than ever before. The emerging technology has brought a significant transfer in information, technology and development sectors mainly. This book addresses these issues besides including the advances of Gigahertz and terahertz technology in space applications worldwide, along with possibilities of using this technology in deep space networks. The future of technology lies in blended and collaborative research. Computing Wideband Antenna technologies are advancing at a very rapid pace and touching newer horizons every day. Knowledge of emerging technologies in engineering domain is becoming an important ally to the development of sustainable and promising future.