It presents the mathematical models for the ppm modulation and demodulation circuits system . author gives out the conditions of linear modulation and demodulation , and educes its connection between the modulation factor and maximal laser frequency excursion 建立了ppm調(diào)制與解調(diào)的數(shù)學(xué)模型,給出了實現(xiàn)線性調(diào)制與解調(diào)的條件以及調(diào)制深度與最大激光頻率偏移之間的關(guān)系。
Further , the characteristics such as the response speed , the efficiency and the relationship between load and the modulation factor are counted and analyzed . during the stage of circuit design , the whole chip and the sub - block circuits are well - designed , respectively 基于此模型,計算并分析了離散脈沖頻率調(diào)制下升壓型dc / dc變換器的響應(yīng)速度、效率和負載與調(diào)制度的關(guān)系等特性。