ECE :: Microwave Communication
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Assertion (A): A coaxial line is a non-radiating line.
Reason (R): In a coaxial line the electric and magnetic fields are confined to the region between the concentric conductors.
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A 10 km long line has a characteristic impedance of 400 ohms. If line length is 100 km, the characteristic impedance is
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A matched generator (Zg = Z0) with 1 Ω available. If all ports are matched, the power delivered at ports 1, 2, 3 respectively are
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A resistive microwave load with ZL = 150 Ω is connected to 50 Ω coaxial line. SWR is
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Which of the following devices uses a slow wave structure?
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In a turnstile antenna two-half wave resonant wire radiators are placed at 90° to each other in the same plane and are excited
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A waveguide section in a microwave circuit acts as
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In a klystron amplifier dc electron velocity is v0 and dc electron charge density is r0 the dc beam current is
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and is independent of line length.
, the cutoff frequency for TM11 mode is about 12% more than that for TE20 mode.
= coulomb |sec|m2 = current density.