| 摘要 |
PURPOSE: A time delay variable mobile communication repeater is provided to prevent interference between adjacent repeaters by varying delay of time with respect to forward and backward communication signals. CONSTITUTION: RF(Radio Frequency) amplifiers(40,62) amplify a received RF signal. An IF(Intermediate Frequency) converters(42,64) converts the RF signal into an IF signal. IF amplifiers(44,66) amplify the converted IF signal. Filter units(46,68) filter the amplified IF signal to extract only IF signal. IF amplifiers(48,70) amplify the extracted IF signal. Analog/digital converters(50,72) convert an analog signal of the IF into a digital signal. Delay adjusting units(52,74) variably adjust an output time with respect to the digital-converted signal. Digital/analog converters(54,76) convert the digital signal with the variably adjusted output time into an analog signal. IF amplifiers(56,78) amplify the analog-converted IF signal. RF converters(58,80) convert the IF-amplified signal into an RF signal. RF amplifiers(60,82) amplify the RF-converted signal and transmits it to a mobile terminal through an antenna.
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