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00000EC303121903

Derive the expression for volatege , current and input impedance of a
transmission line at a distance | from load impedance 21

An electromagnetic wave travelling in free space has
E = (Say + 2a,)cos(wt + 2y —4z)V/m. Determine (i) w (ii) A (iii) The
magnetic field component (iv) The time average power.

State Poynting Theorem. Derive the expression for complex Poynting vector.

1 and its

The propagation constant of a lossy transmission line is (1 + 2j)m7~
characteristic impedance is 1000 at w = 10°rad/s .What are the values of L, C,
R and G?
PART C

Answer any two full questions, each carries 20 marks.
If we want to calculate an impedance at 0.44 from the load using smith chart,
how much degree should we move from the load in the smith chart?
Consider a 50Q, quarter-wave long transmission line at 2GHz. It is connected to
a 5V, 10Q source at one end and is left open circuited at the other end. Calculate
the magnitude of voltage at the open circuit end.
Derive expression for TM mode in rectangular wave guide.
A 5041752 load is connected 10 10062 lossless line. Using smith chart find
(i) Reflection coefficient (ii) Standing Wave Ratio (iii) The load admittance ‏رلا‎
‎(iv) சீடி at 0.54 from the load.
Derive expression for TE mode in rectangular wave guide.
Consider a TM,3 propagating inside a rectangular waveguide having a=Scm,
b=6cm, ೮ = 0, (८ = (८0 , € = 960 and ಗೈ = Isin(ax/a)cos(3my/b)sin(2n ><
10116 - Bz) A/m. Determine (i)The cut-off frequency (ii) The phase constant

(111) The propagation constant (iv) The intrinsic impedance

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