1. EE496 Design Review:
Philip Robbins

2. OVERVIEW
> What is your project about again?
> What has been accomplished? What has not?
> This is a design review. Tell me about your design. How does it work?
> How are you going to test your design?
> What do you expect to accomplish before the final presentation?

3. What is your project about again?
The Basics
> Driver Board is an analog/digital biasing circuit.
> input: pulsed TTL signal signifying when to go into forward / reverse bias mode.
> output: 500 – 1000 mA forward bias 5V; -35 volts reverse bias to pin diode
The Design Considerations
> Decrease the weight of the board & components / make package compact => $$$
> Increase switching time => resolution
> Must pass environmental tests (mil spec)
Load: Pin diode inside a T/R Switch

4. What has been accomplished? What has not?
+ Pulser Circuit to switch between reverse and forward bias (tested working).
+ Prototype Design for 2 possible fault detection schemes.
+ Prototype PCB for testing has been developed.
+ All necessary parts have been ordered
- Parts have not come in (expected to arrive right now).

5. Tell me about your design. How does it work?
> Scheme A: Comparator & Multiplexer Fault Detector

6. > Scheme A: Comparator & Multiplexer Fault Detector
> Advantage: Comparator Outputs are independent of each other.

7. > Scheme B: Dual MOSFET and OR gate Fault Detector

11. How are you going to test your design?

12. What do you expect to accomplish before the final presentation?
> Completed testing of Prototype Driver board.
> Finalized fault detection scheme.
> Second Prototype driver board with size as the primary focus (paper/pcb?).
> Testing with sample Elastomers & Encapsulants

13. Questions?