1. Anechoic Chamber System Design Review 10/14/2011

2. Project Overview Anechoic Chamber Test antennas • Designed for 2-4 GHz • To be used by future senior design teams • Easy to use • Robust • Three antennas designed and built • One Wideband Antenna • One High Gain Antenna • One ReducedSize Antenna

3. Project plan Phase I- Chamber Design Phase II- Absorber • Assembly • Isolation testing • Isolation improvements and final test • Design • Cutting/ scaling/ purchasing • Application • Quiet zone testing • Final review/design edits

4. Project Plan (cont.) Phase III – Rx antenna mount Phase IV – Control System • Design • Arm construction • Slider construction • Motor/Housing construction • Control system housing construction • Wiring and insolation • System Level Design • GUI • LabView control level • Microcontroller level • Interface

5. Project Plan (cont.) Phase V – Antennas Phase VI – Final review and testing • Design • Construction • Testing • Final tests • Calibration • Documentation of chamber properties • User’s manuel

6. Key Risks • Standard gain reading can not be taken • Calibration sequence does not accurately apply offset so readings are wrong • Chamber is too complicated for someone without RF background to use • Absorber is not placed correctly and allows for reflections

7. Customer Needs

8. Customer Specifications

9. Functional Diagram

10. Antenna Mount Design

11. Slider Design

12. Antenna Selection

13. LabVIEW Function Flow Chart

14. LabVIEW Front Panel / Interface

15. LabVIEW Interface First Stage

16. LabVIEW Interface Second Stage

17. LabVIEW Interface Third Stage

18. Control System Diagram • Linear flow • Micro Controller interfaces with LabView • Reset option for users to stop program mid-execution • When normal execution completes, exports all data to a text file to be used with programs such as Matlab

19. Motor System Diagram