Re: need help about microstrip line antenna

thax for your advise, but i have tried air substrate yet...
i knew that book it's very use full book for me i think...

in my project, the thickness of my substrate no limitation but not so thick. my limitation is on length n width, is about 45x45 cm..

hi
i try many time to made u antenna send me to the useful kind and i want say some point and advise to u i try send u u file tomorrow sorry about postpone
1- that antenna u find in wong book and u try to use for u application is too large for u application look to the book which written that antenna which i think design for 1.5GHz and upper is 75mm*75mm so for u antenna normally u should increase it then time
2- i never seen FR4 epoxy with thickness of 2 mm u should define the standard size like 1.6mm
3- pls use mm as unit and dont simulated u antenna with terminal simulation and u wave port should be on u ground and i seen u dont penetrated u substrate an u should penetrated ground also
4- for the frequency u chosen i think that kind model antenna u send for me never response and i think u should increase the effective length of antenna by method link meandered structure and other new technique
5 if u amateur in antenna i never suggest Wong's book and i suggest this book:
Broadband Planar Antennas Design and Applications Zhi Ning Chen and Michael Y. W. Chia