Technology

Question 1

How can intermodulation interference between two transmitters in close proximity often be reduced or eliminated?

Answer 1

By installing a terminated circulator or ferrite isolator in the feed line to the transmitter and duplexer

Question 2

How can parasitic oscillations be eliminated in a power amplifier?

Answer 2

By neutralization

Question 3

What is the name of the condition that occurs when the signals of two transmitters in close proximity mix together in one or both of their final amplifiers, and unwanted signals at the sum and difference frequencies of the original transmissions are generated?

Answer 3

Intermodulation interference

Question 4

What term describes a wide-bandwidth communications system in which the RF carrier varies according to some predetermined sequence?

Answer 4

Spread-spectrum communication

Question 5

How can even-order harmonics be reduced or prevented in transmitter amplifier design?

Answer 5

By using a push-pull amplifier

Question 6

What is the modulation type that can be a frequency hopping of one carrier or multiple simultaneous carrier

Answer 6

Spread spectrum