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arXiv · 1403.2909

Impedance Matched Absorptive Thermal Blocking Filters

E. J. Wollack·D. T. Chuss·K. Rostem·K. U-Yen
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Abstract

We have designed, fabricated and characterized absorptive thermal blocking filters for cryogenic microwave applications. The transmission line filter's input characteristic impedance is designed to match $50\,Ω$ and its response has been validated from 0-to-50\,GHz. The observed return loss in the 0-to-20\,GHz design band is greater than $20\,$dB and shows graceful degradation with frequency. Design considerations and equations are provided that enable this approach to be scaled and modified for use in other applications.

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E. J. Wollack, D. T. Chuss, K. Rostem, K. U-Yen. 2014-03-12. Impedance Matched Absorptive Thermal Blocking Filters. https://doi.org/10.1063/1.4869038

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