ECE :: Microwave Communication
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A circular polarizer converts a linearly polarized wave into a circularly polarised wave.
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If D is diameter of circular waveguide the cutoff wave-length for TE11 mode is equal to
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The external magnetic field in a magnetron is such that lines are
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A circular waveguide carries TE11 mode whole radial electric field is given by
Er = E0j1(r) sin Φ V/m
where r is radial distance in cm from the axis
The cut off wavelength is -
Assertion (A): Impatt diode is an avalanche diode.
Reason (R): Avalanche breakdown phenomenon occurs when a p-n junction is reverse biased.
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A radar has a maximum range of 120 km. The maximum allowable pulse repetition frequency for unambiguous reception is
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In a line with finite attenuation
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In the given figure a short circuited transmission line resonator If n = 1, 2, 3...
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The electric field in a TWT due to applied signal
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and for parallel resonance βl = n
for both series and parallel resonance