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Research for Steering Beam Antenna Using Metasurface Material

Professor Mona E. Zaghloul (ECE), Professor S. Ahmadi (ECE)

An antenna is a reciprocal structure that receives and transmits a signal at the same direction. In this project, for the first time, a meta-surface structure that makes a non-reciprocal antenna is proposed. The concept of Snell’s law is changed to a generalized formula in a way that a phase can be added to the signal when it is travelling through this meta-surface. The phase that is added to the signal is different based on the direction of the signal; as a result, a non-reciprocal structure will be designed. The main part of the meta-surface is the phase shifter, which consists of passive and active circuits. The phase shifter circuits will be implemented between two dielectric substrates by using a surface-circuit-surface technology. One of the interesting applications of this idea is in satellite communication where a satellite can communicate with two ground stations at the same time with a single antenna.

The concept of a non-reciprocal meta-surface. The antenna transmits the signal to one direction and receives it from the other direction.