| 摘要 |
PURPOSE:To surely remove only a disturbing wave by arranging the separated signals of every band in the order of size of a power level, and specifying a band channel in which an interference wave exists based on level difference between neighboring orders, and controlling the switch of the band channel. CONSTITUTION:A received spread spectrum signal is separated into three or more band channels of different center frequencies by a filter group 11, and they are sent to a synthesizer 17 through switch circuits provided in every band channel, and are synthesized. The signals of every band channel are supplied to a comparison circuit 15 through a filter selection circuit MPX 12, a detection circuit 13, and an integration circuit 14. The citcuit 15 compares the signals of every band channel with each other, and arranges them in the order of the size of the power level, and obtains the level difference between the neighboring signals, and determines the band channel in which the interference wave exists, and controls the switch circuit 16. Thus, even if plural disturbing waves interfere, they can be surely removed. |
