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20102ee161_1_ee161_1_HW4

20102ee161_1_ee161_1_HW4 - 2a=0.25cm and 2b=0.75cm What is...

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HW #4 #1. Derive the capacitance per unit length and inductance per unit length for a parallel plate waveguide and a coaxial line with arbitrary dielectric constant. #2. For a parallel plate waveguide, the width is 10mm and the height is 1mm. Find (1) the characteristic impedance and phase velocity of this transmission line (2) if a material with dielectric constant is filled in between the two plates, how do the impedance and phase velocity of the line change? (3) If the voltage across the two conductor plates is1 volt, how much power this line carries? 4 r ε = #3. (a) Determine the characteristic impedance of an air-filled coaxial line when
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Unformatted text preview: 2a=0.25cm and 2b=0.75cm. What is the wavelength at 3 GHz? Neglect dielectric and ohmic losses. (b) Repeat your calculations when the line is Teflon filled. ε r =2.05. (c) for Teflon filled case, calculate the inductance and capacitance of the transmission line per unit length. #4. A microstrip for which w/h=4 has a dielectric substrate with a relative permittivity of 10. What values for β, Vp, and Zo are predicted by the parallel-plate waveguide model? Assume the frequency is 1.5GHz....
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