In order to decrease the mirror frequency interference, cross interference and inter-modulation interference, double IF (Intermediate frequency) is adopted in the receiver.
为了降低镜频干扰、交调和互调干扰，接收机采用了双中频方案。
2
This paper gives a simple algorithm of quasi-optimal frequency distribution for mobile radio systems, in which the third-order inter-modulation does not appear. The computation results are given.
本文提出了移动电台无三阶互调的准最优频率分配的简化算法，并给出了计算结果。
3
Multistage diffraction light produces inter - modulation light, compression and crossover modulation for the diffraction light will directly affect the composition of the polychromatic light.