Question

The ratio of the transverse electric field to the transverse magnetic field is called as
1. waveguide impedance
2. waveguide wavelength
3. phase velocity
4. Poynting vector

Answer 1

Correct Answer - Option 1 : waveguide impedance

The intrinsic/waveguide impedance is defined as the ratio of the electric field and the magnetic field phasor (complex amplitude), i.e.

\(η =\frac{E}{H}=\frac{j\omega \mu }{\gamma }\)

For free-space, the intrinsic impedance is a real quantity, i.e.

η  = η0 = 120π