| 摘要 |
PURPOSE: A circuit for measuring the transmission state of a base station is provided to measure the transmission power of a multi-sector through a single path. CONSTITUTION: The first to third directional couplers(11-13) receive each sector-classified transmission signal and couples the received sector-classified transmission signals in forward or reverse direction. The first multi contact point switch(74) receives reverse signals outputted from the first to third directional couplers(11-13), and outputs a signal of a sector to be measured among inputted forward signals. The second multi contact point switch(75) receives the forward signals outputted from the first to third directional couplers(11-13), and outputs a signal of a sector to be measured among the inputted reverse signals. The third multi contact point switch(76) receives the signal outputted from the first multi contact point switch(74) and the signal outputted from the second multi contact point switch(75), and outputs the forward signal or the reverse signal. A signal detector(64) receives the signal outputted from the third multi contact point switch(76), and detects the strength of the signal. |
