Title :
Real time measurement of VSWR with directional couplers
Author :
Wang, Xinyuan ; She, Jingzhao ; Feng, Zhenghe
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper a method of measuring VSWR is introduced and discussed. In this method, first, the power of incident wave and reflected wave is measured separately with relevant directional coupler and detector. Then the magnitude of voltage reflection coefficient and VSWR are calculated by MCU. The theoretic analysis of this method and fixed error induced by nonideal directivity of the directional coupler are discussed in the paper. Additionally, the ways for diminishing the error are given out. Some experiment results are shown.
Keywords :
directional couplers; measurement errors; microwave measurement; network analysers; voltage measurement; VSWR measurement; directional couplers; fixed error; incident wave; nonideal directivity; power measurement; real time measurement; reflected wave; relevant directional coupler; voltage reflection coefficient; Detectors; Directional couplers; Equations; Impedance; Power measurement; Power transmission lines; Reflection; Transmission line measurements; Transmission line theory; Voltage;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2004. ICMMT 4th International Conference on, Proceedings
Print_ISBN :
0-7803-8401-6
DOI :
10.1109/ICMMT.2004.1411630
