| 摘要 |
PURPOSE: A method for installing a building service system for personal communication systems is provided to easily install a facility to provide call service to PCS users in the inside of a midtown building so as to remarkably reduce work time and manpower required in equipment setup or after-sales service. CONSTITUTION: A yagi antenna(20), transferring a radio frequency of 1.8GHz, is installed at the external of a basement(11) of a building(10) to provide call service to PCS users. In the inside of the building(10), a repeater(30) to relay the radio frequency input signal transferred through the yagi antenna(20), is installed. A line repeater(40), receiving the input signal through the repeater(30) and amplifying it, is installed in the inside wall of the building(10). Also in the inside of the building(10), a splitter(50) to distribute the amplified signal to call shadow areas is installed. Leakage coaxial cables(60), to which the signals distributed through the splitter(50), are installed at each story above and under the underground. An omni-antenna(70) is connected to the end of each leakage coaxial cable(60).
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