Ntt Docomo, Inc.

Takahiro Iyama

Teruo Onishi

Toshio Nojima

Shinji Uebayashi

Yoshiaki Tarusawa

Katsuki Kiminami

A mobile communication terminal includes: a transmission power controlling unit for performing transmission power control such that the sum of channel transmission powers or the sum of the ratios of the channel transmission powers to threshold values of the corresponding channels is a predetermined target value; an average transmission power calculating unit for calculating the average value of the sum of the channel transmission powers in a set monitoring period or the average value of the sum of the ratios of the channel transmission powers in the set monitoring period to the threshold values of the corresponding channels; and a transmission power suppressing unit for performing reduction control of the transmission powers such that these average values in a set control period are each equal to or less than the threshold value.

Mobile communication terminal

An object of the present invention is to provide a simple way of measuring the local average absorbed power of a radio device having a plurality of antennas. A local average absorbed power measuring method of the present invention has an individual measurement step and a calculation step. In the calculation step, local average absorbed power candidates are obtained while weights are being varied. In a local average absorbed power candidate calculation sub-step, the absorbed power distribution in three-dimensional space is calculated from the combined electric field or combined magnetic field obtained in the combination sub-step, and a local average absorbed power candidate is obtained. In a local average absorbed power selection step, the highest one of the local average absorbed power candidates is specified.

Absorbed power measuring method, local average absorbed power measuring method, local average absorbed power calculating apparatus, and local average absorbed power calculating program

A disclosed specific absorption rate measurement system according to an embodiment of the present invention measures a specific absorption rate of electromagnetic waves from a radiating source absorbed in a dielectric medium. The system includes a measurement portion that measures a first electric field vector on an observation surface which is a two-dimensional surface in the dielectric medium; an electric field calculation portion that calculates a second electric field vector in a point excluded from the observation surface in accordance with electric field components of the first electric field vector measured on the observation surface, the electric field components being parallel to the observation surface; and a calculation portion that calculates the specific absorption rate from the calculated second electric field vector.

Specific absorption rate measurement system and method

In an apparatus for measuring absorbed power including an electromagnetic field probefixedly mounted within a head simulation phantomwhich simulates the configuration and the electromagnetic characteristics of a head of a human body, and wherein the strength of an electric field or a magnetic field of a radio wave externally irradiated upon the head simulation phantomis measured by the electromagnetic field probe, and the power of the radio wave absorbed by the head is estimated on the basis of measured values, the head simulation phantomcomprises a solid dielectric' which simulates the configuration and the electromagnetic characteristics of a head of a human body or a liquid dielectricwhich simulates the electromagnetic characteristics of a head of a human body and which is filled in an enclosed vesselwhich simulates the configuration of a head of a human body. The volume of the solid dielectric&#x2032; or the volume of the enclosed vesselis equal to or less than 5&#xd7;10mm.

Apparatus for measuring absorbed power

In an apparatus for measuring absorbed power including an electromagnetic field probefixedly mounted within a head simulation phantomwhich simulates the configuration and the electromagnetic characteristics of a head of a human body, and wherein the strength of an electric field or a magnetic field of a radio wave externally irradiated upon the head simulation phantomis measured by the electromagnetic field probeand the power of the radio wave absorbed by the head is estimated on the basis of measured values, the head simulation phantomcomprises a solid dielectric' which simulates the configuration and the electromagnetic characteristics of a head of a human body or a liquid dielectricwhich simulates the electromagnetic characteristics of a head of a human body and which is filled in an enclosed vesselwhich simulates the configuration of a head of a human body. The volume of the solid dielectric&#x2032; or the volume of the enclosed vesselis equal to or less than 5&#xd7;10mm.

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Yokohama, Japan

Takahiro Iyama