Test bench for evaluating noise suppression member, noise suppression member evaluation system, and noise suppression member evaluation method
The test bench design addresses the challenge of evaluating noise suppression materials by gradually changing impedance to suppress reflection and resonance, enabling accurate assessment across a wide bandwidth.
WO2026155106A1PCT designated stage Publication Date: 2026-07-23AUTONETWORKS TECH LTD +2
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- AUTONETWORKS TECH LTD
- Filing Date
- 2026-01-13
- Publication Date
- 2026-07-23
AI Technical Summary
Technical Problem
Existing methods for evaluating noise suppression materials fail to accurately assess their performance over a wide bandwidth due to differences between laboratory conditions and real-world equipment setups, and may lead to resonance issues.
Method used
A test bench design with a transmission line member and a base member that gradually changes impedance from both ends to the center, suppressing signal reflection and resonance, allowing for accurate evaluation of noise suppression materials across a wide bandwidth.
Benefits of technology
Enables precise evaluation of noise suppression materials over a wide bandwidth by suppressing signal reflection and resonance, ensuring accurate measurement of their characteristics.
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Smart Images
Figure JP2026000703_23072026_PF_FP_ABST
Abstract
A test bench for evaluating a noise suppression member according to an embodiment comprises a bench body including: a transmission line member having both ends connected to a measuring instrument for measuring passage characteristics; and a base member having a ground surface facing the transmission line member. The bench body includes a first region portion located at the center in the longitudinal direction of the transmission line member, and a pair of second region portions located on both sides of the first region portion in the longitudinal direction. A first line portion included in the first region portion of the transmission line member is disposed parallel to the ground surface with a gap therebetween, and has an attachment portion to which a noise suppression member to be evaluated is attached. A pair of second line portions, respectively included in the pair of second region portions of the transmission line member, and the base member are provided such that the impedance of the pair of second line portions gradually changes from the both ends toward the first line portion.
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