Microwave Communication In an SHF pulsed radar set, a reflex klystron can be used as a Transmitter oscillator Local oscillator Single mixer stage Duplexer stage Transmitter oscillator Local oscillator Single mixer stage Duplexer stage ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication To achieve good bearing resolution when using a pulsed-radar set, an important requirement is A narrow, antenna-beam width in the horizontal plane A narrow, antenna-beam width in the vertical plane A low repetition rate A high duty cycle A narrow, antenna-beam width in the horizontal plane A narrow, antenna-beam width in the vertical plane A low repetition rate A high duty cycle ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication 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) S = λR/RL S = λR/L S = 2λR/L S = 3λR/L S = λR/RL S = λR/L S = 2λR/L S = 3λR/L ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication The Gunn diode oscillator Generates frequencies which are below 100 MHz Operates over a positive resistance characteristic Depends on the formation of charge domain Is capable of generating continuous microwave power of the order of kilowatt Generates frequencies which are below 100 MHz Operates over a positive resistance characteristic Depends on the formation of charge domain Is capable of generating continuous microwave power of the order of kilowatt ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A reflex klystron is oscillating at the frequency of its resonant cavity. If the reflector voltage is made slightly less negative, the Output power would increase Oscillation will cease The frequency will decrease Bunching would occur earlier in time Output power would increase Oscillation will cease The frequency will decrease Bunching would occur earlier in time ANSWER DOWNLOAD EXAMIANS APP
Microwave Communication A magnetron is operated at a duty cycle of 0.001. It has a peak power output of 100 kilo-watts. Its average power is 10,000 watts 1,000,000 watts 1,000 watts 100 watts 10,000 watts 1,000,000 watts 1,000 watts 100 watts ANSWER DOWNLOAD EXAMIANS APP
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