Hi. I'm new to robotics, and I'm interesting in developing a range detector which will measure signal strenght from an active RF target. The range I'm interested in is up to 1 meter (10cm-1m). I've been searching the net (and this group), but most range finding designs revolve around ultrasonic and IR detectors which work on measuring ping time. My toy is equiped with an RF transmitter (I'm transmitting data), so all I need to do is measure signal strenght and determine range based on received power. I cannot find schematics or preassemlbed kits anywhere.
Has anyone got any links to RF range detectors?