Multilayer Cryogenic Powder Filters with Low Parasitic Capacitance
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916873354870784 |
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| author | Pradhan, Itishree Li, Hao Rupp, Alina Sato, Yosuke Van Qui, Henri Vo Tanaka, Miuko Ideue, Toshiya Bocquillon, Erwann Hashisaka, Masayuki |
| author_facet | Pradhan, Itishree Li, Hao Rupp, Alina Sato, Yosuke Van Qui, Henri Vo Tanaka, Miuko Ideue, Toshiya Bocquillon, Erwann Hashisaka, Masayuki |
| contents | We report the development of a cryogenic powder filter that simultaneously offers high attenuation of radio-frequency (RF) signals in the gigahertz (GHz) range and minimized parasitic capacitance to ground. Conventional powder filters, which consist of a signal line passing through a metal powder-filled housing, attenuate high-frequency signals via the skin effect. However, these designs often suffer from significant parasitic capacitance between the signal line and the grounded chassis, which can compromise the performance of sensitive measurement setups by limiting their frequency bandwidth. In this work, we demonstrate that a multilayer powder filter design effectively achieves both high RF attenuation and reduced parasitic capacitance. This solution suppresses sample heating due to the unintentional intrusion of RF signals through the wiring, without degrading the performance of the measurement setup. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_23388 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multilayer Cryogenic Powder Filters with Low Parasitic Capacitance Pradhan, Itishree Li, Hao Rupp, Alina Sato, Yosuke Van Qui, Henri Vo Tanaka, Miuko Ideue, Toshiya Bocquillon, Erwann Hashisaka, Masayuki Mesoscale and Nanoscale Physics We report the development of a cryogenic powder filter that simultaneously offers high attenuation of radio-frequency (RF) signals in the gigahertz (GHz) range and minimized parasitic capacitance to ground. Conventional powder filters, which consist of a signal line passing through a metal powder-filled housing, attenuate high-frequency signals via the skin effect. However, these designs often suffer from significant parasitic capacitance between the signal line and the grounded chassis, which can compromise the performance of sensitive measurement setups by limiting their frequency bandwidth. In this work, we demonstrate that a multilayer powder filter design effectively achieves both high RF attenuation and reduced parasitic capacitance. This solution suppresses sample heating due to the unintentional intrusion of RF signals through the wiring, without degrading the performance of the measurement setup. |
| title | Multilayer Cryogenic Powder Filters with Low Parasitic Capacitance |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2507.23388 |