CMI has designed, fabricated, and performed full spaceflight qualification testing on many filters from 10 to 200 GHz. Filters are designed for optimum RF performance, size/mass, and manufacturability. By combining precision RF CAD tools, 40+ years of RF design experience, and novel fabrication methods, CMI is able to produce high performance filters with no tuning screws. This leads to improved power handling, very low levels of PIM, and the elimination of bench tuning time and risks.

Depending on the application, filters may be manufactured by direct machining or copper or aluminum, or by copper electroforming for high mechanical strength and very low PIM.

For filters requiring a minimal frequency variation over temperature, CMI has a proprietary fabrication process to produce highly stable filters using Invar as the base material, but with low loss and high selectivity without the use of tuning screws

CMI can custom design filters to meet your specific RF and mechanical requirements.

• Ka-Band (0.9% BW)
• Return Loss > 24 dB
• Insertion Loss < 0.9 dB
• Rejection to 40 GHz > 60 dB

• Ku-Band (0.25% BW)
• VSWR < 1.4:1
• Insertion Loss < 1.5 dB
• Meets Specific Rejection targets to 43 GHz
• Coaxial Input/Output Ports
• Center Frequency Tolerance ± 5 MHz over -10 to +50 °C