To investigate the electromagnetic coupling of cellular telephone antennas and a human head, a phantom head - plastic co

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To Investigate The Electromagnetic Coupling Of Cellular Telephone Antennas And A Human Head A Phantom Head Plastic Co 1 (82.68 KiB) Viewed 27 times

To investigate the electromagnetic coupling of cellular telephone antennas and a human head, a phantom head - plastic container filled with a solution that approximately resembles the dielectric and conductive properties of a human head - is used for measurements. In particular, the solutions are made that have the relative permittivity and loss tangent equal to the corresponding average head tissue parameters at two frequency bands allocated for wireless communications in North America: (1) r = 44.8 and tan 6 = 0.408 at f = 835 MHz (2) r = 41.9 and tan 6 = 0.293 at f= 1.9 GHz The objective is thus to understand the impact of electromagnetic waves on the human head in terms of power absorbed. (a) Provide an illustration of the problem, clearly defining the problem in your own words. (b) Provide a step by step approach to obtain the power lost in the phantom head. What conservation law is used and provide an its interpretation and applicability to this problem? (c) What assumptions are made in solving this problem?