Thread: Standing Wave Phase
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Old December 12th 07, 09:12 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
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First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Standing Wave Phase
wrote:
Although we know that the 200 ohm line is longer, there is no
indication that the length of the 600 ohm line must or must not
change.

The phase shift at the impedance discontinuity depends
upon the *ratio of Z0High/Z0Low*. The following two
examples have the same phase shift at the impedance
discontinuity.

Z0High Z0Low

---43.4 deg 600 ohm line---+---10 deg 100 ohm line---open

---43.4 deg 300 ohm line---+---10 deg 50 ohm line---open

So how long does the 600 ohm line have to be in the following
example for the stub to exhibit 1/4WL of electrical length?

---??? deg 600 ohm line---+---10 deg 50 ohm line---open
--
73, Cecil http://www.w5dxp.com
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