【摘要】 针对由带通滤波器组构成的、对带宽为b的带通信号具有宽开接收能力的前端结构,本文根据各通带的上限频率将一定范围的通带划分成半带位和整数带位。由带通采样定理,整数带位的信号可用4b采样速率实现无混叠采样；对于半整数带位的情况,文中给出了采样速率的选取及种类个数优化策略。仿真及示例表明,采用带通采样方法时,该优化策略可以大大减少采样速率的种类。更多还原

【Abstract】 Aiming at a front-end structure with wide and open receiving ability for signal with b bandwidth,which is configured by band-pass filter bank,the filter bank’s pass bands are classified into half band positions and integral band positions according to the up- per frequencies of every pass band.On the basis of“Band-pass Sampling Theory”,the bands which have integral band positions can be sampled using 4b sampling clock rates.For the bands which have half band positions,an optimized scheme is put forward to select the band-pass sampling rates.Simulation and examples indicate that the kind of sampling rates may be reduced mostly by adopting the pro- posed scheme.更多还原