Politechnika Śląska - strona 131

Force on Moving Charge - wykład

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 448

Force on Moving Charge The force FF on a charge q moving in a vacuum in which the electric and magnetic fields are E and H respectively is given by F = q (E + μ0v ×H) (4.3) This equation in effect defines E and H in SI units. The corresponding SI units of a number of quantities are as follows. ...

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 812

General discussion We look for plane wave solutions of the form e−γ·r, in which γ is the complex vector γ = α + jβ (9.4) It will be recalled from the previous discussion that there exist planes of constant amplitude (⊥ α) and planes of constant phase (⊥ β). It may be shown that in the lossless ...

General Formulae for Energy Change - wykład

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 434

General Formulae for Energy Change In the light of the results discussed in the last two sections we will postulate that the general expression for the change in stored energy in an electromagnetic system in response to changes in fields is dU = Z v{E · dD +H· dB}dv (7.7) This general result ...

General solution - opracowanie

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 413

General solution The general solution contains forward and reverse travelling waves of arbitrary shape, and has the form It may easily be confirmed that this solution satisfies equation 2.7 when the parameter c, which has the significance of ...

Generalisation - opracowanie

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 490

Generalisation Although we have studied the case of normal incidence only, the general picture we have derived is considered to the applicable to a wide range of practical cases. Thus whenever we have a metallic boundary supporting a magnetic field, we will always assume the magnetic field is su...

How We Will Proceed - wykład

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 546

How We Will Proceed In the early chapters we will focus on the behaviour of transmission lines which will be frequently of the twin line or coaxial line structure. The lines are usually uniform in cross section with respect to the longitudinal d...

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 539

Illustration of solution We chose for our first illustration the situation when only a forward wave is present. The wave may be illustrated against a time axis as shown in Figure 2.4. Because the function Vf is of the single argument z − ct, if the voltage observed at the

Integral form - opracowanie

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 497

Integral form Difficulties sometimes arise in using the differential equations when boundaries are introduced and idealized, and some fields become discontinuous at the boundary. In such cases the integral forms of the equations shown below are...

• Politechnika Śląska
• Fields lines and guides
Pobrań: 0
Wyświetleń: 658

Interpretation Let us examine the relation between complex S and the real N. Since the real electric field is given in terms of the corresponding complex phasor by E(x, y, z, t) = E(x, y, z)ejωt + E∗(x, y, z)e−jωt 2 (7.16) and the real magnetic field is given in terms of the corresponding com...