Reflection loss bridge type circuit used to measure impedance matching

Published:2011/8/7 4:58:00 Author:Sophia | Keyword: Reflection loss bridge type circuit, measure impedance matching | From:SeekIC

In the high-frequency circuits, impedance matching is the key. If the problems of impedance mismatch and signal reflection appear, which will produce a standing wave to cause the abnormal condition of the signal transmission . For example, in a 50Ω transmission line, if you connect a 50Ω load impedance, then all power is supplied to the load. Of course, it is the normal state when reflection power is 0. When mismatch state is showed, the reflection coefficient, standing wave ratio (VSWR: Volt-age Standing Wave Ratio) and mismatch losses (ie reflection loss) and other terms can be used.



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