Coupling into and out of a traveling-wave tube can be accompanied by a
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ECE · all questionsMicrowave Communication
Microwave Communication
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When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have
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The antenna separations (in meters) required for optimum operation of a space diversity system can be calculated from:
where R = effective earth radius (m) and L = path length (m)
where R = effective earth radius (m) and L = path length (m)
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The aquadag coating on the inside of PPI tube is used
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What allow microwave to pass in only one direction?
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If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the
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Oscillators of a klystron tube are maintained
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A PPI cathode-ray tube as used on a radar set
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It is possible to increase the maximum range of a radar equipment by
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A high-power microwave pulse of the order of megawatts can be generated by a
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A shipboard equipment which measures the distance between the ship’s bottom and the ocean floor.
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Rainfall is an important factor for fading of radio waves at frequencies above
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In a pulsed radar set, the STC circuit is used to
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Which causes multipath or frequency selective fading?
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If k-factor is greater than 1, the array beam is bent
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Klystron oscillators are most often used in the frequency range of
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Which of the following permits a microwave signal to travel in one direction with virtually no loss, but severely attenuates any signal attempting to travel in the reverse direction?
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The main frequency determining element of a klystron is
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As the electron beam moves through a klystron’s intercavity drift space
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In a pulsed radar set, the function of the duplexer is to
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