The

characteristic impedance of a transmission line at high frequencies--[Z.

In the literature, the

characteristic impedances of unshielded S&IM lines are calculated by using a formula depending on the effective permittivities of unshielded S&IM lines and

characteristic impedance of a conventional microstrip line.

where [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] is the phase delay of line of

characteristic impedance [Z.

The attenuation could also be reduced by a thicker line metallization or by increasing the line width and so decreasing the

characteristic impedance.

The presence of one or other

characteristic impedance depends on the type of simplification used in the deduction of each different model.

Using the classical definition of the

characteristic impedance as the square root of the ratio between the impedance and the admittance:

Spectral-domain computation of

characteristic impedance and multiport parameters of multiple coupled microstrip lines, IEEE Transactions on MTT 37(1): 215-221.

A transfer-matrix approach for estimating the

characteristic impedance and wave numbers of limp and rigid porous materials.

When the

characteristic impedances of the coupled line are 50 [ohm], the normalized even-mode

characteristic impedance is the inverse of that of the odd-mode--[z.

The amount of reflection is a function of load impedance, RL, and the

characteristic impedance, Zo, of the line.

c) VSWR (d)

Characteristic Impedance (e) Antenna type

This involves extracting some of the important parameters such as

characteristic impedance ([z.