microstrip design

can u provide matlab program for circular patch ( cavity model analysis)that as i m new to this field for h=0.159mm,er=2.32,fr=3ghz

You can find it in a book intitled "antenna design with matlab"

dear can u provide me e book or u have some material on circular microstrip design. thanks in advance

have u completed the project? if u need ebooks visit ebookpdf.net. very useful site

please provide some matlab programs on circular patch or some study material
thanks

Try this

http://ece.wpi.edu/mom/index.html

or good theory is in
Antenna theory - analysis and design, by Balanis (second edition is page 752, ch 14.3)