LNBF - Theory, Functioning and Measures

 1) Introduction to the Satellite Communication System; 
 2) LNBF operation; 
 2.1) Block diagram; 
 2.2) RF circuit; 
 2.3) Local oscillator; 
 2.4) Mixing circuit; 
 2.5) FI circuit 
 2.6) Voltage polarization switching; 
 2.7) Operation Band switching by pulse switching; 
 3) Types of LNBF Banda KU and their differences; 
 3.1) Universal LNBF; 
 3.2) LNBF multiple outputs; 
 3.3) LNBF output in single cable; 
 3.4) Customized LNBF 
 4) The main specifications of an LNBF; 
 4.1) Input Frequency (Polarization and Operation Bands); 
 4.2) Output Frequency (Polarization and Operation Bands); 
 4.3) Frequency of Local Oscillators; 
 4.4) Frequency Stability of Local Oscillators at Ambient Temperature and 
 Operating Temperature; 
 4.5) Phase Noise; 
 4.6) Leak from Local Oscillators; 
 4.7) Conversion gain; 
 4.8) Gain flatness; 
 4.9) 1dB compression point; 
 4.10) Noise Figure or Noise Temperature 
 4.11) 3rd order intersection point or 3rd order intermodulation products; 
 4.12) Rejection of Cross Polarization (Crosspol); 
 4.13) Return Loss or VSWR; 
 4.14) Spurious output; 
 4.15) Image Frequency Rejection 
 4.16) Polarization voltage switching range; 
 4.17) Current consumption. 
 5) Main Measures (Theory and practice) 
 5.1) Noise Figure Measurement; 
 5.2) Conversion gain; 
 5.3) Gain flatness; 
 5.4) Rejection of Cross Polarization; 
 5.5) Frequency of Local Oscillators; 
 5.6) Stability of Local Oscillators; 
 5.7) Phase Noise; 
 5.8) Intermodulation;