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Anechoic Chamber

Anechoic Chamber. System Design Review 10/14/2011. 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 A ntenna One High Gain Antenna

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Anechoic Chamber

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  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

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