5GHz patch antenna. how to?

hi!

i′m planning to design and build a patch array antenna on FR4 for 5Ghz application (5 - 5.8Ghz), for a point to point link!
what i have done so far is to design 16 (4x4) patches antenna with the dimension L = lambda/(2*sqrt(epsilon_r)) .. that′s it!

first of all....i′m right about the dimension?
somebody could please provide some info how to design such antenna.
i dont have any simulator at the moment.

thank u!

To design a patch array antenna on FR4 at 5.8GHz, WITHOUT a simulator, you might need to have about 10 years experience designing phased-arrays antennas.

Try this tutorial for a single patch, using free software:
http://www.elektronikschule.de/~krau...l_Sonnet_e.pdf

I wonder if an array on (lossy!) FR4 makes sense. If you need high gain, better use a low loss substrate. On FR4, a single patch antenna will be poor and the high loss in the distribution network will reduce the theoretical gain of the array.

U may refer to IE3D antennas design handbook!