A mode whose electric and magnetic field vectors are both normal to the direction of propagation . Note: The TEM mode is the most useful mode in a coaxial cable .
TRANSVERSE ELECTRIC AND MAGNETIC (TEM) MODE
Meaning of TRANSVERSE ELECTRIC AND MAGNETIC (TEM) MODE in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012