RF Engineer Interview Questions - Part 1

1. what is return loss?
2. what is insertion loss?
3. Explain VSWR
4. relation between return loss and VSWR
5. what is reflection coefficient
6. What is impedance matching
7. how do you perform impedance matching
8. how do you bias a power amplifier?
9. what is ISM band?
10. relation bwteeen dBm and mW?
11. what is the need for RF isolator?
12. What is Balun?
13. what is the signficance of SNR in RF designs?
14. What is receiver sensitivity?
15. What is the difference between harmonics and spurious?
16. What are the roles of RF engineers?
17. Why do we use spectrum analyzer?
18. why do we use network analyzer?
19. What challenges did you come across in your role as an RF engineer?
20. How do we measure the data rates of a RF module?
21. what are the various types of antennas you have used?
22. What is a transducer? give an example
23. What is carrier to interference ratio(C/I)?
24. What is phase noise?
25. Explain the term bandwidth
26. How do you design a filter?
27. what tools do we use for RF designs?
28. Explain antenna efficiency
29. why do we need modulation?
30. why do we need power amplififer?
31. What is Co-Channel Interference?
32. How do you define antenna gain?
33. Explain MIMO technology
34. explain the advantages and disadvantages of using PCB antenna
35. What is dBc?
36. What would be your approach to design a power amplifier?
37. what tools did you use for RF designs
38. what is smith chart?
39. When would you use a circulator?
40. When would you use a splitter?
41. How do you test a power amplifier?
42. What are some of the most important skills that an RF engineer should have?
43. What is the difference between an omnidirectional and a bidirectional antenna?
44. What is a quarter wave diople antenna
45. What is the Impact of the Atmosphere on RF Signal Propagation?
46. What is the difference between Data Rate and Throughput?
47. What is SDR?
48. What are RF MEMS?
49. What is ERP?
50. What is the difference between UHF, VHF, HF, Microwave bands?