Sensor Networking based on Two-Dimensional Signal Transmission Technology

This paper introduces our project of sensor networking technology called two-dimensional signal transmission (2DST). 2DST is a new form of room-size communication, in which the signal energy is confined in thin sheets. The sheet is composed of a dielectric layer sandwiched between a conductive mesh and a continuous conductive layer, typically. Signals are sent by microwaves propagating in the two-dimensional sheet. The electrical power for the device operation is also transmitted by microwaves. The prominent feature of 2DST is that it can integrate a large number of sensor chips without electrical contacts and efforts of wiring. The simplicity of the structure enables us to form the sheet on the surfaces of various materials of walls, desks, floors, and even clothing. We already developed some types of non-contact connectors to the 2DST sheet for wide band signal transmission