Unfortunately, in many cases the length of interconnection lines after the T-branch is very long and a large impedance mismatches will be generated (figure 5a) due to the fact that before the branch the gate sees an impedance of Z₀ and after the branch the arms are observed as a parallel structure of Z₀/2. An interesting solution, which can offer enough satisfaction in practical engineering, is shown in figure 5b. Here one can be observed that the branch is placed right at the gate.

Fig. 5 T-branch (a) versus Y-branch (b)

 

In these terms the initial T-branch is transformed in a Y-branch, a much better situation because the digital gate will see a characteristic impedance of Z₀/2 just from the beginning, without any strong discontinuity at this point. Taking into consideration that a large range of digital gates is relatively or even very tolerant to load impedances, the solution seems to be very good.