Help:: Help:: Rectangular Microstrip Patch Antenna

Hi friends.....
I am working on rectangular micro strip antenna as a part of my project.
At earlier point from this website i have read about "How to measure input impedance at edge of the antenna"
The answer is " By plotting S11 on smith-chart"
I have done same and get result as below.
My question is that " How i read this impedance from this smith-chart". "What is the value of impedance".

YOu have not defined the range of FREQ. But you need more points.

Looking in as S11 the ideal point is the center of the chart.

( usually normalized to a 50Ω port and is represented by the centre of the Smith chart.)
http://en.wikipedia.org/wiki/Smith_chart