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本文介绍一种天线方向图测量系统,其动态范围达五个数量级,精度在±1dB之内。为了满足此性能,作者设计了一种程控式对数检測器。该系统具有体积小、价廉、操作方便、精度高等特点。文中给出了用该系统测得的二张天线方向特性图。
This article describes an antenna pattern measurement system with a dynamic range up to five orders of magnitude with an accuracy of ± 1 dB. To meet this performance, the authors devised a programmable logarithmic detector. The system has a small size, low cost, easy operation, high accuracy and so on. The paper gives the direction of the two antenna measured with the system characteristics.