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Updated: Jul 24, 2025

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Scanning-probe Single-electron Capacitance Spectroscopy
Published on: July 30, 2013
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低损耗的PogoPin探测卡带有连接隔离结构,最高可达50 GHz
1School of Electrical Engineering, Korea University, Seoul 02841, Republic of Korea.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
这项研究引入了一种新的毫米波射频探针卡设计,有效消除了共振和信号损失. 优化的地面表面和信号引脚放置确保了芯片测试的可靠高频信号传输.
科学领域:
- 电气工程 电气工程
- 无线电频率 (RF) 工程
- 材料科学 材料科学 材料科学
背景情况:
- 毫米波 (mmWave) 频率在射频探针卡设计中存在独特的挑战,原因是共振和信号损失.
- 介电插座和波格针可以在毫米波频率上充当共振器,特别是当它们的高度与半波长相匹配时.
- 信号完整性问题是由阻抗不匹配和这些频率的电磁干扰引起的.
研究的目的:
- 提出并验证一种新的毫米波射频探针卡设计,以减轻共振和信号损失.
- 为了优化地面表面和信号波戈引脚的放置,以提高高频性能.
- 为了提高信号传输可靠性,用于系统芯片 (SoC) 测试.
主要方法:
- 开发了一种新的探测卡设计,包括优化的地面平面屏蔽和精确的信号引脚定位.
- 通过战略定位地面表面和信号波戈引脚来解决电磁共振问题.
- 通过测量,研究了信号引脚位置对信号不连续性的影响.
- 一个原型探针卡被制造并测试了插入损失和共振消除.
主要成果:
- 拟议的探测卡设计成功地消除了毫米波应用中常见的共振问题.
- 插入损失性能为-8dB,可达到50GHz.
- 在实践芯片测试中,向芯片上的系统传输信号的插入损失为 -3.1 dB.
- 地平面作为一个有效的屏蔽结构,最大限度地减少共振和辐射损失.
结论:
- 新型射频探测卡设计有效地解决了毫米波频率的共振和信号损失问题.
- 优化组件放置和地面平面屏蔽对于实现高频信号完整性至关重要.
- 开发的探针卡可以在毫米波频率下对系统芯片设备进行可靠和高效的测试.
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