E TYPE TEE JUNCTION

E TYPE T JUNCTION

An e type t junction as shown in fig.1.It is an  E type T junction because the junction arm extends from the main waveguide in the in the same direction as the E field in the waveguide.

fig.1.

In the E type t junction  the E field for various input as show in fig.2.The  E type T junction with inputs fed into the various arms.The magnetic  lines that always present with an electric field have been omitted. In view (k), the input is fed into arm b and the outputs are taken from a and c arms. when the E field arrives between points 1 and 2 ,point 1 becomes positive, and 2 becomes negative. The positive charge at point 1 induce a negative charge on the wall 3.The negative charge at point 2 induces a positive charge  at point 4 .These charges cause the fields to form 180 degrees out of phase in the main waveguide; therefore, the outputs will be 180 degree out of phase with each other. In view l, 2 in phase inputs of equal amplitude are fed into the a and C arms .The signals at point 1 and 2 have the same phase and amplitude. no difference of potential exist across the entrance to the b arm and no energy will be coupled out. however, when the two signals fed into the a and c arms are 180 degree out of phase ,as shown in the view M. points 1 and 2 have a difference of potential. This difference of potential induces and E field from point 1 to point 2 in the b arm, and energy is coupled out of this arm.  View n and p set two methods of obtaining two outputs with only one input.