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https://designers-guide.org/forum/YaBB.pl Measurements >> RF Measurements >> Loss in unmatched line https://designers-guide.org/forum/YaBB.pl?num=1091118228 Message started by Rehan Zakai on Jul 29th, 2004, 9:23am |
Title: Loss in unmatched line Post by Rehan Zakai on Jul 29th, 2004, 9:23am Hello, Does anyone know how to estimate loss per unit length in an transmission line with standing waves (ZL=/Zr). I understand the loss is greater than the normal I2R loss for a flat (ZL=Zr) transmission line. Rehan |
Title: Re: Loss in unmatched line Post by Adrian on Jul 29th, 2004, 2:00pm In general, the Mismatch Loss (dB) is: -10*log(1-|gamma load|^2) where |gamma load| is the magnitude of the load reflection coefficient. |
Title: Re: Loss in unmatched line Post by Rehan Zakai on Jul 30th, 2004, 9:45am I know that equation but is there a more comprehensive equation that also takes into account the length of the transmission line. To pose the question differently, will the loss be the same for a 0.1 meter and a 1 meter 50 ohm transmission line connected to two identical unmatched loads. R. Zakai |
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