阻抗匹配的共平面波导金属粉末低通波器用于冷应用
Matvey Lyatti1,2, Raphael Roth1,2, Irina Gundareva1,2
1Peter Grünberg Institut (PGI-9), Forschungszentrum Jülich, 52425 Jülich, Germany.
The Review of scientific instruments
|July 17, 2024
概括
我们开发了使用共平面波导设计的新金属粉末低通波器. 这些过器提供高衰减和紧性,性能与经典的冷过器相提并论.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
背景情况:
- 低温过器对于在低温下运行的敏感电子系统至关重要.
- 传统过器经常面临尺寸,集成和在低温温度下性能方面的挑战.
研究的目的:
- 开发和描述基于共平面波导设计的新型阻抗匹配金属粉末低通波器.
- 为了评估这些过器在室温和77.4K的性能.
主要方法:
- 制造共平面波导金属粉末 (CPW-MP) 过器.
- 在室温和77.4K时,包括返回损失和衰减在内的过器性能的表征.
- 将CPW-MP过器与多极LC过器集成,以评估组合性能.
主要成果:
- CPW-MP 过器在 77.4 K 频率下,回归损失高于 9.8 dB,可达到 10 GHz.
- 过器衰减尺度与频率 (29220 dB/m) 在15 GHz范围内在77.4 K.的频率线性.
- 在高于2 GHz的频率下,为1米长的过器实现了超过100dB的总衰减.
- 集成过器显示了低切断频率,停止频段衰减>100dB,以及590dB/十年滚动.
结论:
- 拟议的CPW-MP过器易于制造,耐热且紧.
- 它们的性能与传统的冷过器相当,并且可以灵活地集成.
- 这些过器在冷应用中为微型化提供了显著的机会.
相关概念视频
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Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
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Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
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01:25Active Filters
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Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
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