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Distinguish between lossless line and distortion less line.

PART C

Answer any two full questions, each carries 20 marks.
Write note on half wave and quarter wave transmission lines.
A lossless 6062 line is terminated by a 60 + j60Q load. Find T and ‏,و‎ if Zin= 120
-j60Q. How far is the load from generator (Solve with Smith chart)?
What are called degenerate modes? Explain.
Draw the field distribution pattern for TEx mode inside a rectangular
waveguide.
Draw the input impedance variation of lossless line when shorted and opened for
a 0 to 27 variation in phase.
Design a stub to match 40+j30Q load (antenna) to a lossless line of 100Q (use
Smith chart).
List all the modes which are supported in rectangular waveguides and why?
From Maxwell’s equation derive the expression for E fields and H fields inside
the waveguide for TE mode.

By analytical method, get the value of position where stub has to be placed from
load and stub length with single stub impedance matching in transmission lines.
Derive the relationship between guide wavelength, free space wavelength and

cut off wavelength in rectangular waveguide.
‏اد بد‎ मं ‏اد‎

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