Design of a Hemispherical Antenna Array Receiver for Medical Applications - Foundations on Natural and Artificial Computation - page 263

while the ϕ range is divided into 20 points. For example, for the ϕ -axis the point
10 corresponds to ϕ =10 ∗ 2 20 = 2 and for the θ axis the same point corresponds

40 = 4

π

to θ =10 ∗ .

4 Conclusions and Future Work

A theoretical hemispherical antenna array is designed and simulated to receive
brain waves or signals embedded in the human head. A new beamforming tech-
nique that makes use of the orthogonality property of the TE modes is devised
and used. The beamforming technique used is successful in receiving from single
or multiple sources. The array can be applied to any other application where
spherical geometry is involved where the task is to receive signals from within
this spherical geometry. The maximum seeking circuit for the output current is
under investigation and also the antenna elements and all the radio-frequency
RF front-end circuitry is being designed for simulation.

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