UHF 대역의 휴대전화 착신기능 제한 시스템의 설계 및 제작 = Design of a Call Blocking System against UHF Band Cellular Signals

다국어 초록 (Multilingual Abstract)

As demands grow for restricting use of cellular phones by attendants in the public places such as conference rooms, churches, and playhouses etc., a call blocking system against UHF band cellular signals is developed for other attendants who do not want to be disturbed by the phone rings. The idea of preventing a cellular phone from ringing was developed from the fact that the system radiates interferent signals having 0.1 to 0.05 watts of CW wave, makes it possible to increase the error rates of output signal of PSK modem, and hence makes the cellular phone Impossible to receive the right call signal. The system designed in this study was set up and tested in the several public places and found itself very effective.

목차 (Table of Contents)

• Ⅰ.서 론
• Ⅱ.휴대전화 착신기능 제한의 조건
• 2.1고려될 수 있는 제한장치의 종류
• 2.2통화기능 제한의 기본 조건
• 2.3설치 및 운용 조건
• 2.4제한장치에 요구되는 기술적 조건
• Ⅲ.착신기능 제한장치의 설계
• 3.1착신기능 제한 범위의 산출
• 3.2착신기능 제한공간의 설정
• 3.3제한장치의 설계 사양
• Ⅳ.설계 · 제작 및 실험
• 4.1착신제한장치의 설계 및 제작
• 4.2수신파 차단 실험
• Ⅴ.결 론
• 참고문헌