A device for transmitting and receiving alarm signal of tower-top low noise amplifier

摘要

The present invention relates to a warning signal transceiver of a tower tower low noise amplifier used in a mobile communication base station system, and more particularly, a transmission line for transmitting a separate warning signal by frequency shift keying (FSK). The present invention relates to a warning signal transceiver of a tower tower low noise amplifier which does not require a furnace.;The conventional tower top low noise amplifier has a problem in that a plurality of separate transmission lines must be constructed from each coupling device to a base station device in order to transmit a warning signal. The warning signal transceiver of the tower top low noise amplifier according to the present invention is designed to solve this problem, and receives a warning signal from the low noise amplifier and generates a binary logic signal corresponding thereto. A first frequency shift modulated modem for outputting a modulated signal in response to the binary logic signal received from a microprocessor; and a first band receiving the modulated signal from the first frequency shift modulated modem and filtering the signal into a predetermined band A first bias tee for receiving the modulated signal filtered from the first bandpass filter and applying a signal to a transmission line; and receiving a modulation signal transmitted through the transmission line. A second bias tee provided in front of the base station device; and received from the second bias tee. A second band-pass filter signal to wake in a predetermined band, and then demodulation receiving the filtered signal from the second band-pass filter and the corresponding second frequency shift keying modem for outputting a predetermined logic signal; And a second microprocessor which receives the predetermined logic signal from the second frequency shift modulation modem and outputs a predetermined warning signal to the base station apparatus.;As described above, the warning signal transceiver of the tower tower low noise amplifier according to the present invention has the effect that a separate warning signal transmission line is not required.