This program models the behaviour of a transmission line plus antenna. The line impedance can have any Zo. The antenna feedpoint impedance can be any value of R+jX. Line length can be any fraction and number of wavelengths. Line overall attenuation can be any value of dBs.
There is an SWR meter located at each end of the line. The meters also indicate the reflection coefficients at the locations. Meter Zo can be set equal to line Zo or to the standard 50 ohms.
Line input impedance can be observed to change versus line length in wave-lengths, line attenuation and antenna impedance. The transforming action of the line can be demonstrated. The smaller SWR and reflection coefficient at the transmitter end of the line can be seen. The exact increase in loss due to standing waves on the line is calculated.
The program can be used in practical applications and also for educational purposes. It is hoped it may prevent the outbreaks in violence which frequently occur in newsgroups about the meanings of SWR and the notions of reflected power.
Download program SWRARGUE from website below in a few seconds. File size = 41 Kbytes. Run immediately. No unzipping inconvenience.
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