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What is VSWR?
A: The antenna input impedance of the feeder, and inconsistent with characteristics of resistance, arising from the incident and reflected waves in the feeder superimposed on the formation of standing wave. Its adjacent voltage is the minimum and maximum VSWR. It is a test based on the feeder transmission efficiency, VSWR and power relations in the following table. Company products meet national standards in the workplace, the port antenna VSWR less than 1.5 in the working frequency point VSWR less than 1.2, the VSWR is too large, will shorten the distance between the antenna and reflection Will return to power transmitter power amplifier, power amplifier easily burned part of the impact of communication systems work properly.
VSWR 1.0 1.1 1.2 1.5 2.0 3.0
Power reflection% 0 0.2 0.8 4.0 11.1 25.0
Power Transmission 100 99.8% 99.2 96 88.9 75.0
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