Читать книгу Introduction To Modern Planar Transmission Lines - Anand K. Verma - Страница 96

The incident voltage excites the port‐1, and it reaches the port‐2 as The port‐2 is short‐circuited to determine the [Y] parameter. Under the short‐circuit condition, the reflected voltage at the port‐2 is such that the total voltage at the port‐2 is zero. The reflected voltage at the port‐1 is . The total voltage and the total current at the port‐1 are

At the port‐1, the incident current I_inc enters the port, so it is positive, whereas at the port‐1, the reflected current I_ref leaves the port, so it is negative. At the port‐2, the incident current I_inc enters the port‐2 from the port‐1 side and leaves the port‐2, so it is negative, whereas at the port‐2, the reflected current I_ref from the terminated load, enters the port‐2, so it is positive. The total voltage and the total current at the port‐2 are

The line section is symmetrical and reciprocal giving the [Y] parameter:

(3.1.16)