1GHz以上微波暗室电场强度标准及误差分析

Electric Field Strength Standard and Error Analysis for a Microwave Anechoic Chambers above 1GHz

本文阐述了利用系列角锥喇叭建立1GHz以上微波暗室标准电场强度的原理和方法。导出了角锥喇叭近场增益的简化公式。简述了2080天线测试系统及三天线法测量技术,且对测量误差进行了分析。理论和实验结果表明,建立标准电场强度的误差≤0.5dB。

In this paper, the principle and method geneating a standard electric field strengthare discussed using a series of pyramidal horns. Simplified formula of pyramidal horn near—fieldgain is derived. Measurement technique of three antennas method and 2080 antenna test systemsare related simply, and test errors are analysed. Theoretical and experimental results are shownthat the error of founding standard electric field strength is less than or equal ±0. 5dB.