The Theory of Thin Antennas and Its Use in Antenna Engineering

Indexed in: EBSCO, Book Citation Index, Science Edition.

This book deals with the methods of theoretical and experimental research of antennas, which are based on the electromagnetic (EM) theory. The theory of thin antennas explains antenna analysis, as ...
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Compensation Problem

Pp. 197-229 (33)

Boris Levin

Abstract

Issues of applying the compensation method application are studied, including the heterogeneous nature of the media, optimal placement of main and auxiliary radiators, the dark spot dimensions, the reduction factor and variation of the total and local SAR, retention of patterns and field strength. Results of calculations, performed by different methods, are compared with each other and with experiment. A technique of protecting system against external action is described; the automatic adjustment circuit is developed. Recommendations for using the compensation method in a wide frequency range are given.

Keywords:

Additional radiator, Automatic adjustment circuit, Compensation method, Dark spot, Dark spot boundary, Employment of reflectors, Equivalent relative permittivity, External actions, Heterogeneous media, Higher efficiency of fields retention, Homogeneous medium, Low efficiency of the variant of currents, Main radiator, Proximity of metallic bodies, Radiation pattern, Radiators placement at equal distances from the compensation point, Reduction factor, Retention of driving currents, Retention of radiators fields, Total and maximum local SAR, Use of two additional radiators, Wideband field compensation.

Affiliation:

Holon Institute of Technology Israel