Near Field Magnetic Induction (NFMI) Communication
Abstract
NEEC Publicly Releasable Abstract Technical POC: Thai Tran, thai.b.tran@navy.mil Topic: KPT-01 Title: Near Field Magnetic Induction (NFMI) communication Magnetic Induction (MI) communication is an emerging technology that operates through resonant inductive coupling, instead of acoustic, radio waves, or optical methods. It can operate in hazardous environment such as underwater scenarios with high turbidity, in stealth mode operation etc. where well established means such as acoustic, electromagnetic waves, optical methods may not be very desirable. This technology can be used for short to medium range and also operating at a good data rate. This MI techniques do not suffer some of the limitations of other technologies. Magnetic Induction (MI) communication is achieved by changing magnetic field with the signal data using a small magnetic coil. The signal is received by placing a coil in the modulated magnetic field, which induces current in the coil due to a varying magnetic field. MI has a negligible propagation delay and has a predictable stable channel. It can be operated at low power in case of a near field communication. In the first part of this proposal, magnetic field generated with a specific antenna such as circular coil will be simulated to determine the antenna configuration and size, optimum frequency of operation, distance of operation and power requirement for a specific operation. Emphasis of research will focus on characterizing coil/ antenna performance under the various conditions, such as within fresh water, saltwater, water to air, air to water communication. In the subsequent year a two-way transmitter/receiver system will be developed. This will be followed by a development of directional and omnidirectional antennas in the final year of the proposal. This proposal would also explore the capability to create a secure directional communication bubble between transmitter(s) and receiver(s) using magnetic induction.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 11, 2025
- Source ID
- N001742310015
Entities
People
- Murari Kejariwai
Organizations
- United States Navy
- Washington State University