正交波形
正交波形
描述了基于AT89C52单片机、锁相环和开关电容滤波器的正交信号发生器的设计和实现方法。
The architecture of FM quadrature demodulation was provided. On the universal IF digitalization hardware platform, FM waveform was demodulated in base-band together with SSB and FM.给出了FM正交解调结构,即在统一的中频数字化硬件平台上,与单边带、调幅等波形一起在基带完成正交解调。
The waveform generator is composed by DSP and quadrature digital upconverter (QDU). DSP is used as main controller to decide the modulation mode and output waveform of QDU.波形产生器主要由dsp和数字上变频器构成,DS P作为主控制器设定数字上变频器的调制方式和输出波形。