Electronics and Communication Engineering - Microwave Communication
Exercise : Microwave Communication - Section 5
When duct propagation exists
For l << λ, the equivalent circuit of a microwave resistor is
If μr is relative permeability, ∈r is relative permittivity, c is velocity of light fc is cutoff frequency, phase velocity vp (i.e., speed with which a particular phase of the wave travels down a rectangular waveguide at frequency f) is given by
If in line the characteristic impedance becomes real.
In a microwave coaxial cable the inner conductor radius is a and inner radius of outside conductor is b. For TE11 mode the cut off wavelength is about