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Microwave Communication

Microwave Communication
In a radar-set receiver, the usual mixer stage is

A Rochelle salts crystal
A silicon crystal
A tunnel diode
And FET

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Microwave Communication
Klystron oscillators are most often used in the frequency range of

30 to 30000 MHz
10 to 10000 MHz
3000 to 30000 MHz
300 to 3000 MHz

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Microwave Communication
Which of the reception problems below that is not due to multipath?

Slow fading
Delayed spreading
Random Doppler shift
Rayleigh fading

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Microwave Communication
If k-factor is greater than 1, the array beam is bent

Towards the outer space
Towards the earth
Towards the ionosphere,
Away from the earth

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Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?

Loran A: 1950 kHz
Loran D: 10.2 kHz
Loran C: 100 kHz
Loran B: 900 kHz

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Microwave Communication
What ferrite device can be used instead of duplexer of isolate microwave transmitter and receiver when both are connected to the same antenna?

Isolator
Magnetron
Circulator
Simplex

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MORE MCQ ON Microwave Communication

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