Preview Questions RF (Radio Frequency) Engineer | Role Specific Skill

Question 1: Which of the following is a method to reduce signal fading in RF transmission?

Which action should you take?

Choose only one option

Using diversity techniques like MIMO

Increasing the transmission power

Using narrowband signals

Reducing the distance between transmitter and receiver

Question 2: Which multiple access technique is employed in 4G LTE systems?

Which action should you take?

Choose only one option

TDMA

OFDMA

FDMA

CDMA

Question 3: What type of filter is commonly used to prevent EMI from high-frequency signals in an RF system?

Which action should you take?

Choose only one option

Band-pass filter

Low-pass filter

Band-stop filter

High-pass filter

Question 4: What is the effect of a poor return loss in an RF system?

Which action should you take?

Choose only one option

Higher radiated emissions

Enhanced signal integrity

Increased immunity

Reduced power transfer

Question 5: What is the main purpose of a spread spectrum technique in wireless communication?

Which action should you take?

Choose only one option

To spread the signal over a wide frequency range to avoid interference

To modulate the signal for better reception

To concentrate the signal into a narrow frequency band

To increase the data rate of the communication channel

Question 6: What is the effect of mutual coupling between antennas in an array?

Which action should you take?

Choose only one option

It improves the impedance matching

It can distort the radiation pattern and reduce the overall performance

It increases the gain of each antenna

It causes higher radiation efficiency