RF & MICROWAVE DOWNCONVERTER BLOCK DIAGRAM 

The simplified workflow of the RF & Microwave Downconverter is as follows:

1. The incoming Radio Frequency (RF) signal first enters the system and is amplified by a Low Noise Amplifier (LNA) to boost signal strength while minimizing noise.

2. The amplified RF signal passes through a Band-Pass Filter (BPF) to eliminate unwanted frequency interference, retaining only the target RF band.

3. The filtered RF signal is sent to the first Mixer, where it mixes with the input Local Oscillator 1 (LO1) signal to generate a first Intermediate Frequency (IF1) signal.

4. The IF1 signal is amplified by an IF1 Amplifier and then filtered by an IF1 BPF to suppress noise and spurious components.

5. The processed IF1 signal is fed into the second Mixer, combining with the Local Oscillator 2 (LO2) signal to downconvert to a second Intermediate Frequency (IF2) signal.

6. The IF2 signal undergoes amplification via an IF2 Amplifier and further filtering through an IF2 BPF for enhanced signal purity.

7. Finally, the refined IF2 signal is converted to a digital format by a 16-bit Digital-to-Analog Converter (DCA) and output as the final IF2 signal.