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New Style of Antenna Reduces Cellular Phone Radiation

A domestic research institute has successfully developed a new style of antenna for cellular phones, which will drastically cut the level of electromagnetic-wave radiation.

The Radio Research Laboratory (RRL), affiliated with the Ministry of Information and Communication, said yesterday that the new antenna is capable of reducing SAR (specific absorption rate) by more than 30 percent and improving voice quality by more than 25 percent that of current ones.

SAR defines a cell-phone radiation level that can be safely absorbed by the human body.

Hong Su-won, a RRL researcher who spearheaded the development project, explained that the development is to have two built-in antennas inside a cell phone instead of the current only one, so as to minimize the impact of potentially harmful radiation on human body by dispersing SAR into two antennas.

The usage of two antennas will also sharply improve the speech quality, he added.

According to Hong, existing antennas radiate electromagnetic waves in all directions and a large amount of electromagnetic waves is absorbed into the body of a caller when he or she is on the phone.

To solve the problem, some foreign countries developed and commercialized antennas, which direct the cell-phone radiation toward the back of a caller, but they are not being used popularly because phones using such an antenna have a poor speech quality.

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