V2EX eirp

EIRP

定义 Definition

EIRPEquivalent Isotropically Radiated Power 的缩写,中文常译为等效全向辐射功率:指一个发射系统(发射机功率 + 天线增益 线缆/连接损耗)在理想各向同性天线方向上“等效”辐射出来的功率,用于衡量无线电发射强度并进行链路预算与合规评估。(也常以 dBm、dBW 表示)

发音 Pronunciation (IPA)

/ia r pi/

例句 Examples

The router’s EIRP is limited by local regulations.
路由器的等效全向辐射功率(EIRP)受当地法规限制。

To meet the 5 GHz band rules, we reduced transmit power and accounted for antenna gain so the final EIRP stayed under the legal maximum.
为满足 5 GHz 频段规定,我们降低了发射功率并把天线增益计入计算,确保最终 EIRP 不超过法定上限。

词源 Etymology

EIRP 来自工程与无线电监管语境中的缩写:Equivalent(等效) + Isotropically(各向同性地) + Radiated(辐射的) + Power(功率)。其中“各向同性”指理想化的全向天线模型,便于在不同设备与天线配置之间做可比的功率度量。

相关词 Related Words

文学/著作中的用例 Literary Works

  • Antenna Theory: Analysis and Design(Constantine A. Balanis)
  • Microwave Engineering(David M. Pozar)
  • The ARRL Handbook for Radio Communications(ARRL 出版)
  • FCC(美国联邦通信委员会)法规与设备认证文件(常用 EIRP 作为合规指标)
  • ITU(国际电信联盟)相关建议书与频谱管理文档(常出现 EIRP/等效辐射功率表述)
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