nobchaThe front-end filter of this receiver originally used a two-stage staggered configuration, but I switched to a three-stage Chebyshev design to improve the skirt characteristics. This resulted in better attenuation performance in the FM broadcast band and the upper image frequency range.
Update: What I learned about the front end filter instead of ２ stages stagger resonator after assembling the PCB circuit.
A project log for DIY Airband Receiver with Hybrid RF Front-End
Ardiuno on ATmega328P/ESP32-C3/RASP PP is controling Si4732, Si5351a, and TA2003.
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