Hey,

I am building a robot for a competition (simple drag race on a dirt
road during a canadian winter).

I wanted to use a beacon transmitting in the RF range, and use a
directional antenna to correct the angle that the robot is travelling.
The robot would then travel forward towards the beacon (placed at the
end gate). So far I have no antenna experiance (havent taken the
antenna class yet).

Would a circular antenna work for this project? where can i learn more
about circular antennas?

Also are there any commercial (inexpensive, the competition only allows
a $100 budget), tranceivers I could use (preferably in the 433 Mhz
band). Since i only need a small signal to correct the course, it
doesnt have to be too powerful.

Thank you for your help,

G_dir