V2EX insertion-loss

Insertion Loss

释义 Definition

插入损耗:指把某个器件/网络(如滤波器、连接器、光纤器件)“插入”到信号传输路径后,引起的信号功率降低(常以 dB 表示)。常用于射频、微波、通信与光通信领域。(在其他语境中也可泛指“加入某物造成的损失”。)

发音 Pronunciation (IPA)

/nsn ls/

例句 Examples

The connector adds about 0.2 dB of insertion loss.
这个连接器会带来大约 0.2 dB 的插入损耗。

To meet the system budget, we chose a filter with low insertion loss across the passband.
为了满足系统链路预算,我们选择了在通带范围内插入损耗较低的滤波器。

词源 Etymology

insertion 来自拉丁语 *insert-*(“放入、插入”),表示“把某物放进原有结构/路径”;loss 源自古英语 los(“失去、损失”)。合在一起,字面意思就是“因插入而产生的损失”,在工程中专指“插入器件后信号变弱的量”。

相关词 Related Words

文献作品 Literary Works

  • Microwave Engineering(David M. Pozar)
  • RF Circuit Design: Theory and Applications(Ludwig & Bretchko)
  • Fiber-Optic Communication Systems(Govind P. Agrawal)
  • IEC/ITU 与 IEEE 的相关通信与测试标准文档中也常见该术语(用于规定器件/链路的损耗指标与测试方法)。
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