Topic: Transmission Lines
The highest frequency for which a circular coaxial transmission line having outer diameter = 3.1 mm and inner diameter = 1.3 mm can be operated in pure TEM mode (assuming free space medium between the two conductors) should be less than:
- A. 12.2 GHz
- B. 18.6 GHz
- C. 26.5 GHz
- D. 43.4 GHz
Answer: D. 43.4 GHz
Explanation: Explanation not provided in source.