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Walter Maxwell wrote:
I thought it was common knowledge that the reflected energy is totally re-reflected in the forward direction when encountering the open or short circuit at the matching point. The voltages and currents are listed at the Z0-match point in the following example: rho=0.5 200W source---50 ohm feedline--+--1/2WL 150 ohm feedline---50 ohm load Vfwd1=100V-- Vfwd2=200V-- Ifwd1=2A-- Ifwd2=1.333A-- --Vref1=0V --Vref2=100V --Iref1=0A --Iref2=0.667A Vref1 = Vfwd1(rho) + Vref2(tau) (this is the same as b1=s11*a1+s12*a2) 0V = 50V at zero deg + 50V at 180 deg i.e. the voltages cancel Iref1 = Ifwd1(rho) + Iref2(tau) 0A = 1.0A at 180 deg + 1.0A at zero deg i.e. the currents cancel Through wave cancellation, both the voltage and current go to zero in the direction of the source. That's like a short for voltage and an open for current. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- |
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