Microstrip antennas tutorial for dummies

[cbsirio]

microstrip antenna tutorial

Hi all,
I was trying to design a microstrip antenna, but with no success...
I am not familiar with this technique, so I was searching for documents, books, articles, everything who can help me to understand and design the antenna and the feeding network.
My goal is to design a dual beam antenna, on 2.4GHz and with the beams at 45° (+/- 22.5° from the center of antenna). I have tried with Ans*ft De****er 2.0 to simulate some ideas, but I always have large antennas with poor gains... (my gain goal is about 13 dB).

Can someone help me please?
Any suggestion is welcome!

Sirio.

 

[duplex]

antenna for dummies

This is an interesting article. You can find much more information on the web about this topic.

Duplex.

 

[flatulent]

microstrip tutorial

It may be easier to have two antennas feed 180 degrees out of phase.

 

[cbsirio]

antenna design for dummies

Hi Duplex,
No, I am not explained very well, sorry!
Well, my need is to design a microwave patch-array antenna.
An array of square patches(or nearly square, but suggestions are welcome) on a substrate (RT4003), calculated to make a dual beam at 2.45 GHz.

I have looked your pdf, but there is a different kind of approach.

Hi Flatulent!
Do you mean to design two identical antennas and feed them with 180° fase?

I have made some tests designing two patches feeded by a in-fase and 180° fase alimentation.
In this case I had a dual beam antenna, and working on the distance of the patches I can control the angle of the dual beam.

My problem is to have a significant gain (of about 13 db) without using a too large array ($$ and hard to realize)...

My fault is to not have the sufficient background to obtain this, but I like this task, and I have no problem to study papers where I can find explanations...

I have found several documents on Internet, but no one of them could help me, so I ask you for documents or hints!

Thank you all!

Sirio.