Why FR4 Ruined Your S-Band Filter: Cross-Coupled Topologies on Rogers Substrates
Designing a high-performance downconverter can be tough. You need sharp filtering, but this often leads to high signal loss, which hurts your system’s sensitivity. It feels like a trade-off you can’t win. To optimize an S/C band downconverter filter, you must combine a low-loss substrate material, like Rogers, with an advanced filter topology1. A cross-coupled design, for example, creates transmission zeros that sharpen the filter’s roll-off, achieving high rejection without the high insertion loss of a conventional filter2. Achieving both steep attenuation and low insertion loss is the primary challenge in filter design for sensitive receivers. A great filter passes the signals you want with minimal loss while aggressively blocking […]
Cracking Satellite Converter Linearity: Master Cavity Design and OIP3 Optimization
Achieving high linearity in satellite converters feels like a constant battle. Poor designs cause signal interference and performance drops. The solution is often found in the cavity design itself. A high-linearity bidirectional satellite converter absolutely depends on its cavity design. This physical enclosure provides essential shielding to prevent signal leakage and is carefully dimensioned to move unwanted resonant frequencies outside the operating band1. These two functions are the foundation for achieving high linearity and spectral purity. I’ve been designing RF components for a long time, and I’ve learned that overlooking the fundamentals is the quickest way to project failure. When we talk about high-performance systems like bidirectional satellite converters, the […]
Japanese 
English 
Spanish (Spain) 
Arabic 
French (France) 
Vietnamese 
Indonesian 
Belarusian 
Moroccan Arabic 
Tibetan 
Danish 
Bulgarian 
Bosnian 
Catalan 
Frisian 
Bashkir 
Cebuano 
French (Belgium) 
Estonian 
Hindi 
Kurdish 
Tahitian 
Spanish (Colombia) 
Croatian 
Breton 
Georgian