Efficient Radio Frequency filters for space constrained cryogenic set-ups

TL;DR

This paper introduces a compact RF filter suitable for space-limited cryogenic setups, achieving low-frequency noise filtering and high-frequency performance comparable to top filters.

Contribution

The paper presents a novel, space-efficient RF filter design optimized for cryogenic environments with multiple signal lines.

Findings

-3dB cutoff at 65 kHz

Performance at GHz frequencies matches leading RF filters

Suitable for space-constrained cryogenic systems

Abstract

Noise filtering is an essential part for measurement of quantum phenomena at extremely low temperatures. Here, we present the design of a filter which can be installed in space constrained cryogenic environment containing a large number of signal carrying lines. Our filters have a -3db point of 65kHz and its performance at GHz frequencies are comparable to the best available RF filters.