Omni-directional microstrip antenna
there is two microstrip antennas :
http://www.lecad.uni-lj.si/~leon/oth…oma/index.html
Design of this one is based on this pdf file : wp_omni_wireless.pdf You may search in internet for it.
I was tested this BUT without proper material for the pcb – nothing is going on. I’ll search for some old photos.
And second one :
This one is used in older netgear and proxim devices.
