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Microwave Communication
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
A long time constant
Low-pass filters
The restricted high-frequency response
The shortest possible time
A long time constant
Low-pass filters
The restricted high-frequency response
The shortest possible time
Answer
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Related Question
Microwave Communication
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the
π mode
π/4 mode
2π mode
π/2 mode
π mode
π/4 mode
2π mode
π/2 mode
Answer
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Microwave Communication
The cavity resonator
In a reflect klystron has its output taken from the reflector plate
Is equivalent to an LC resonant circuit
Has a low Q factor for narrow operation.
Produces a frequency which is independent of the cavity size.
In a reflect klystron has its output taken from the reflector plate
Is equivalent to an LC resonant circuit
Has a low Q factor for narrow operation.
Produces a frequency which is independent of the cavity size.
Answer
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Microwave Communication
Coupling into and out of a traveling-wave tube can be accompanied by a
All of these
Cavity match
Waveguide match
Direct coax-helix match
All of these
Cavity match
Waveguide match
Direct coax-helix match
Answer
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Microwave Communication
If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers
Must be increased
Must be doubled
May be decreased
Must remain as before
Must be increased
Must be doubled
May be decreased
Must remain as before
Answer
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Microwave Communication
Calculate the effective earth’s radius if the surface refractivity is 301.
6370 mi
8493 mmi
6370 km
8493 km
6370 mi
8493 mmi
6370 km
8493 km
Answer
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