1.

The highest frequency for which a circular coaxial transmission line having outer diameter = 3.1 mm 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» E.


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