what is a planar fed microstrip antenna?

hi all,
anyone know what is a planar fed microstrip antenna?
i want design this type of antenna. can any one help me how to design a circuit diagram?
thank you [/b]

In order for you to design the antenna, you should have your requirments and specification layout; such as, your frequency (tx/rx), gain, type of reflector, orientation, Input/Output S or Y parameters, tolerence (loss), BW, Power in dBm or dBi, SNR etc.. but not limited, these are the main parameter for your antenna. You can find a RF circuit design tools to draw schmeatic and most probably you can simulate in sofware to make sure you achieve your desire requirement(s).

Good luck.

thanks for your reply
but what is a planar fed microsrip antenna can explain clearly please, and can you draw basic circuit(RF circuit) for that without limits

Planar feed = feed with a microstrip line on the same metal level.
A non-planar feed would with vias from the back side, for example.

Hi
for microstrip patch antenna fed by a microstrip line

visit the web site ( http://www.emtalk.com/tut_1.htm )

Good Luck