6.1 General Considerations Figure 6.8.Effect of LO feedthrough in a heterodyne RX. RF LNA Mixer (JF LO-RF LO-IF Feedthrough Feedthrough LO
6.1 General Considerations
6.1.2 Mixer Noise Figure Figure 6.10.SSB noise figure. Signal Band Spectrum at X Image Band Thermal Noise 0L0 0 0L0 Spectrum at Y 0 0
6.1.2 Mixer Noise Figure
6.1.2 Mixer Noise Figure Figure 6.11.DSB noise figure. Signal Band Spectrum at X Thermal M Noise 0L0 0 Spectrum at Y 0 Typical noise figure meters measure the DSB NF and predict the SSB value by simply adding 3 dB
6.1.2 Mixer Noise Figure Typical noise figure meters measure the DSB NF and predict the SSB value by simply adding 3 dB
6.1.2 Mixer Noise Figure Example 6.3 RF LNA Mixer A BPF @RF 0L01 LO (a) RF Channel LNA LNA Output Noise Output Noise SA SA Smix Smix ORF 0 im RF F 0 (b) (F c
6.1.2 Mixer Noise Figure Example 6.3
NF of Direct-conversion receivers Figure 6.13.Direct-conversion RX for NF calculation. I Mixer LPF LNA NF= SNRin SNRin SNRI SNRO LPF Q Q Mixer
NF of Direct-conversion receivers