near field direct antenna modulation

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Near-Field Direct Antenna Modulation:

Near-Field Direct Antenna Modulation Final year project proposal Electronic Systems Engineering - communication Moaz Ahmed A’amir Ahmed Bayan college

Introduction:

Introduction Historically, research in the fields of circuits and electromagnetics has been conducted within two separate communities. This made sense in the past, as there was a clear distinction between circuit and electromagnetic domains in terms of the wavelength and physical size of the structure. However, the availability of today’s silicon-based integrated processes makes it possible to implement chips containing thousands of active and passive components operating at electromagnetic wavelengths that are smaller than the size of the silicon die. This transition creates a new opportunity for research on implementing large-scale radiating integrated circuits. To fully exploit this opportunity, the fields of circuits and electromagnetics should be treated as a unified area of research, with efficient design tools and optimization techniques being developed to analyze these radiating circuits.

Introduction:

Introduction In this presentation, as an example of a large-scale radiating integrated circuit, the technique of Near-Field Direct Antenna Modulation (NFDAM) will be introduced. Unlike conventional transmitter architectures where signals are modulated before the antenna, NFDAM transmitters generate information by directly modulating the antenna’s electromagnetic near-field boundary conditions. In these systems, a single antenna can be used to transmit independent information to different directions simultaneously. The convergence of circuits and electromagnetics at millimeter-wave and above frequencies is a paradigm shift that opens new opportunities for implementing novel systems and sensors with applications in high-speed communication, radar, spectroscopy, and imaging.

Introduction:

Introduction The availability of a large number of transistors with little incremental cost and high reproducibility in silicon enables a designer to take into account multiple levels of abstraction in a single chip from system, architecture, circuit, and device-level to electromagnetic structures. This interdisciplinary integration on multiple levels allows for implementing novel concepts and architectures that would not be feasible for conventional module-based approaches. Near-field direct antenna modulation is a novel concept that is established by taking full advantage of such interdisciplinary integration capability.

Introduction:

Introduction By combining antenna electromagnetic boundary conditions with data-transmitting architectures and circuits in a single integrated system, an efficient and secure communication scheme is possible, which is fundamentally different from conventional modulation schemes. The NFDAM-based system allows for direction-dependent data transmission with higher security than the conventional systems. In this project, the concept of the NFDAM technique is described in detail along with the associated advantages and applications.

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