【摘要】 针对常规的MSK调制电路存在的不足,利用DDS原理进行MSK调制.选用DDS专用芯片AD9850和DSP芯片TMS320C6711B组成调制电路,此调制电路所用元器件数较少,可与其他部分电路公用DSP芯片,频率分辨率达到0.03Hz.试验表明,用此调制电路能得到较稳定的MSK调制波形.更多还原

【Abstract】 To deal with the shortcomings of the conventional MSK modulation circuits, DDS principles are utilized to make MSK modulation, and AD9850 of DDS exclusive chip and TMS320C 6711B are selected to compose tone circuits, which use less device and can share DSP chip with other circuits. The frequency is 0.03Hz. It is easy to debugg the tone circuits. It is proved that the modulated wave is fine as well.更多还原