When a line is loaded the characteristic impedance is equal to

More Questions from Microwave Communication

• If a line having Z0 = 300 ∠ 0 W is short circuited at far end, VSWR is
• A reflex klystron oscillator uses
• Ga As exhibits negative differential mobility
• Microwave links are typically 50 km apart
• If antenna diameter is increased four times, the maximum range is increased by a factor of
• Assertion (A): In the interaction region of magnetron an electron is subjected to three forces: force due to electric field, force due to magnetic field and centrifugal force. Reason (R): The mechanism of generation of microwaves, in a magnetron, involves interaction of electromagnetic fields with electrons moving in static electric and magnetic fields oriented at right angles to each other.
• If VSWR is infinite, the transmission line is terminated in
• Impedance inversion may be obtained with
• In a circular waveguide TE21 mode has lowest cutoff frequency
• Assertion (A): For high frequency lines inductive reactance is very high as compared to ac resistance. Reason (R): Due to skin effect ac resistance of line is higher than dc resistance.

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