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

Question 1: In antenna design, what is the main purpose of using a balun (balanced-unbalanced transformer)?

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To increase the gain of the antenna

To reduce signal distortion

To modify the radiation pattern

To match impedances between the balanced antenna and unbalanced transmission line

Question 2: What is the bandwidth enhancement technique commonly used in microstrip antennas?

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Reducing ground plane

Decreasing dielectric constant

Increasing substrate thickness

Adding parasitic elements

Question 3: What is the significance of the "Q factor" in the design of RF resonators and filters?

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It measures the sharpness of the resonant frequency

It determines the maximum power capacity of the circuit

It defines the number of frequencies a filter can reject

It measures the signal loss across the resonator

Question 4: What is the typical effect of harmonic distortion in an RF circuit, and how can it be mitigated in design?

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It introduces unwanted frequencies that can interfere with the signal

It decreases the output power of the circuit

It makes the circuit more power efficient

It reduces the efficiency of impedance matching

Question 5: What is the relationship between wavelength and frequency in RF signal transmission?

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Directly proportional

Quadratically proportional

Independent of each other

Inversely proportional

Question 6: What is the significance of the "critical angle" in RF signal transmission?

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It determines the highest frequency that can be transmitted

It is the angle at which polarization shifts

It is the angle at which total internal reflection occurs in certain materials

It defines the maximum signal strength