Читать книгу Introduction To Modern Planar Transmission Lines - Anand K. Verma - Страница 212

The wave impedance of the incident, and transmitted TE waves in the medium #1 and medium #2, as shown in Fig (5.2a), with respect to the direction of propagations k₁ and k₂ are given below:

(5.2.20)

However, the interface in the (y − z)‐plane views both the above‐given wave impedances differently due to the oblique incidence. The left (x = 0⁻) and right (x = 0⁺) side faces view the following x‐directed wave impedances, and , due to the (E_z, H_y) field components:

(5.2.21)

Figure (5.2b) shows the equivalent transmission line model of the obliquely incident TE‐polarized wave. The wave impedances , and seen by the interface are taken as the characteristic impedance of the equivalent lines#1 and #2, respectively.

Similarly, the wave impedances viewed by the interface with the obliquely incident TM‐polarized wave are obtained with reference to Fig (5.3a):

(5.2.22)

(5.2.23)

The superscripts k₁ and k_2, used in equations (5.2.22) and (5.2.23) are dropped in further discussion.