Question

Explain the relation between field theory and circuit theory

Answer 1

Circuit Theory:
1) This analysis is originated by its own.
2) Applicable only for portion of radiofrequency range.
3) It is dependent and independent parameter, I and V are directly obtained from the given circuit.
4) Parameters of medium are not involved.
5) Laplace Transform is employed.
6) Z, Y and H parameters are used.
7) Low power is involved.
8) Simple to understand.
9) 2 Dimensional analysis.
10) Frequency is used for reference.
11) Lumped components are used.

Field Theory:
1) Evolved from transmission ratio.
2) Not applicable for portion of radiofrequency range.
3) Not directly obtained from E and H.
4) Parameters (Permeability and Permitiviy) are analysed in the medium.
5) Maxwell's equation is used.
6) S parameter is used.
7) High Power is involved.
8) Needs visualisation effect.
9) 3 Dimensional analysis.
10) Wavelength is used as reference.
11) Distributed components are used.