(Voltage Standing Wave Ratio)
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In the spirit of Einstein:
"Everything should be made as simple as possible, but not simpler."
This website will strive to make antennas understandable, without unnecessary complexity.
In the spirit of Einstein:
"Everything should be made as simple as possible, but not simpler."
This website will strive to make antennas understandable, without unnecessary complexity.
For a radio (transmitter or receiver) to deliver power to an antenna, the impedance of the radio and transmission line must be well matched to the antenna's impedance. The parameter VSWR is a measure that numerically describes how well the antenna is impedance matched to the radio or transmission line it is connected to.
VSWR = 1+ |Γ|
1- |Γ|
Note that VSWR is a measure of how much power is delivered to an antenna. This does not mean that the antenna radiates all the power it receives. Hence, VSWR measures the potential to radiate. A low VSWR means the antenna is well-matched, but does not necessarily mean the power delivered is also radiated. An anechoic chamber or other radiated antenna test is required to determine the radiated power. VSWR alone is not sufficient to determine an antenna is functioning properly.
For more on VSWR go to: https:/antenna-theory.com/definitions/vswr.php
VSWR = 1+ |Γ|
1- |Γ|
Note that VSWR is a measure of how much power is delivered to an antenna. This does not mean that the antenna radiates all the power it receives. Hence, VSWR measures the potential to radiate. A low VSWR means the antenna is well-matched, but does not necessarily mean the power delivered is also radiated. An anechoic chamber or other radiated antenna test is required to determine the radiated power. VSWR alone is not sufficient to determine an antenna is functioning properly.
For more on VSWR go to: https:/antenna-theory.com/definitions/vswr.php