| 摘要 |
PURPOSE:To flexibly cope with the change even in the case a change is generated in a frequency band or a transmission speed by adding a clock decoder. CONSTITUTION:The demodulator has functions of mixers 1, 2, a first chirp signal generator 3, a second chirp signal generator 5, a chirp filter 4, a time division multiple demodulator 6, a memory 7, and a clock generator 8, and also, a clock decoder 9 is added thereto. The clock decoder 9 executes a change of a clock signal and supplies it to each necessary circuit so as to be able to correspond to a difference of a frequency band of inputted FDM(frequency division multiplexing), or a request of a change of a transmission speed. In such a way, even in the case the frequency band or the transmission speed is changed, it is possible to cope flexibly in accordance therewith. |
