电容电路
消声室
天线(收音机)
超高频
反射系数
反射(计算机编程)
定向天线
电子工程
声学
计算机科学
系列(地层学)
电气工程
物理
工程类
电容器
电信
电压
地质学
古生物学
程序设计语言
标识
DOI:10.1109/aps.1997.630218
摘要
An antenna efficiency measurement technique is presented which is based on the classic Wheeler Cap method. Wheeler's original method is regarded as one of the simplest and most accurate for measuring electrically small antennas, but the assumed RLC equivalent circuit model may not be appropriate for all antennas. In the present method we transform measured reflection coefficient data such that either a series or parallel RLC approximation is always valid in the vicinity of resonance. This procedure provides the capability to achieve significant improvements in accuracy over measuring the efficiency of VHF and UHF antennas in anechoic chambers.
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