433 MHz Directional antenna

[LeighCanipa]

Can anyone help me with details on how to develop a directional slot antenna?

I have little knowledge about radio waves so a simply explanation would be great.

I would also like details on doppler direction finding if anyone can help with that?

 

[tyytor]

Can anyone help me with details on how to develop a directional slot antenna?

I have little knowledge about radio waves so a simply explanation would be great.

I would also like details on doppler direction finding if anyone can help with that?

hi,is this kind of what you were looking for??
http://www.packratvhf.com/Slot_Antenna/Slot_ant.pdf

the doppler i am not sure what you are asking,
the only time i have to worry about it is with satellites and its correction.