VNA0440
–
VNA0440e
VNA0460
–
VNA0460e
user manual V3.1
- 48 -
Smith Chart line sets
A Smith Chart is usually drawn with impedance lines that make it easy to determine what
happens when impedances are connected in series by following the circles.
It is also possible to draw
admittance lines
that show what happens when impedances are
connected in parallel. This is shown in the right graph above.
Since the distance to the center of the Smith Chart is a measure of the match, it is possible
to draw circles of
constant Return Loss
around the center, as in the left graph above. The
right graph shows circles of
constant SWR
.
Center 2,20GHz / Span 3,60GHz
S11
Z
Center 2,20GHz / Span 3,60GHz
S11
Z
-6
-10
-15
Center 2,20GHz / Span 3,60GHz
S11
Z
2
3
5
Center 2,20GHz / Span 3,60GHz
S11
Z
