The Homing Disc

After coming to several dead-ends during our research, design, and implementation of this project, we feel that we have developed a fairly good product. In the end, we chose to go with a receiver and transmitter operating at 650 MHz to drop the antenna size. After a great deal of research, we decided to use a turnstile antenna with folded dipoles for the transmitter due to its resulting omnidirectional radiation pattern. We chose a dipole antenna for the receiver, because of its omnidirectional coverage, but counted on reading for the transmitter by lack of signal, using the nulls in the received signal. The microcontroller we used is the PIC 16F876 which more than adequately met our processing needs in the hand-held device.

Our final design is quite power efficient, small, aerodynamic, and strong meeting most of our objectives. Unfortunately, the cost of the components altogether would be prohibitive to trying to market the Homing Disc as a product. Continue our work from here, we will next look at ways to reduce the cost, the first act being to replace the microcontroller with one that is cheaper. Perhaps we could replace other parts with cheaper alternatives if given the time.

 



This web site is for the Design Project course ELEC/CENG 499; our supervisor is Dr. Peter F. Driessen.