1_5power transimission

1_5power transimission - Department of Electrical and...

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Department of Electrical and Computer Engineering ECSE 352 Electromagnetic Waves and Optics 5 Power Transmission 1.5 Power Transmission References: Hayt and Buck 11.8 AGK2006 1.5-1 Example Quiz 2. Two voltage waves having equal frequencies propagate in opposite directions on a lossless transmission line. The amplitude of the forward wave is half of that of the backward wave. Please determine the total voltage as a function of time and position. ©AGK 2006 ECSE 352 1.5-2 Example Quiz two ire telephone cable consists of two copper 3. A two-wire telephone cable consists of two copper conductors of radius a =0.5 mm, with a centre-to-centre separation of 2 mm separated by a dielectric of relative permittivity μ r =2.55. The conductors have a conductivity of 5.8 x 10 7 S/m and the dielectric conductivity can be eglected. The cable is operated at a frequency of 1 Hz. neglected. The cable is operated at a frequency of 1 MHz. ©AGK 2006 ECSE 352 1.5-3
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Overview We are often interested in the amount of power flowing on a transmission line. I nthe previous classes we obtained expressions for voltage and current on the line. We will use these here to obtain equations for the line loss. We will also make the distinction between the instantaneous power on the line and the time average power. ©AGK 2006 ECSE 352 1.5-5 Transmission line classes A. Transmission line basics Introduction Lossless transmission lines Harmonic waves on transmission lines Time independent (phasor) notation ower transmission and loss Power transmission and loss B. Analog signal transmission 6. Resistive loads and reflections 7. Voltage standing wave ratio 8. Finite lines and input impedance 9.
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This note was uploaded on 01/27/2011 for the course ECSE 352 taught by Professor Mi during the Spring '10 term at McGill.

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1_5power transimission - Department of Electrical and...

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