●●● ●●● ●●●● ●●●● 3.Conversion loss ●●●● ●●●● ●●●● PRE ● Lc=10g Pir 1 It comes from resistive losses and frequency conversion process.它来自于阻性损耗和频率变换过程 2 Diode mixers have conversion losses several dB. 二极管混频器的变频损耗是几个分贝 ③ Transistor mixers have lower conversion loss and may have conversion gain. 晶体三极管混频器变频损耗小，甚至可以获得变频增益 Minimum Lc often occurs for LO power between 5 and 13dBm,which means nonlinear analysis is required. 为了获得最小的变频损耗，本振功率在5~13dBm之间，这意味着需要 采用非线性分析。3. Conversion loss ① It comes from resistive losses and frequency conversion process.它来自于阻性损耗和频率变换过程 ② Diode mixers have conversion losses several dB. 二极管混频器的变频损耗是几个分贝 ③ Transistor mixers have lower conversion loss and may have conversion gain. 晶体三极管混频器变频损耗小，甚至可以获得变频增益 ④ Minimum L C often occurs for LO power between 5 and 13dBm, which means nonlinear analysis is required. 为了获得最小的变频损耗，本振功率在 5 ～13dBm之间，这意味着需要 采用非线性分析。 10lg RF C IF P L P  7