FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr....
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Transcript of FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr....
![Page 1: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/1.jpg)
FM CONVERTER
![Page 2: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/2.jpg)
Team Members
Dan HarkinsTeam Leader
Beau Blackwell
George Henry
Shawn WelchDr. Georgios Lazarou
Advisor
![Page 3: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/3.jpg)
Team ResponsibilitiesResearch Documents Web Site Testing Hardware
Fabrication
Dan Harkins
George Henry
Beau Blackwell
Shawn Welch
![Page 4: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/4.jpg)
Project Significance
• Car radios do not have audio inputs
• Many cars only have a CD or cassette player
• FM converter can be used with FM radio
• Keeps the owner from having to buy and install entire audio system
![Page 5: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/5.jpg)
Current Technology Options
• Cassette adapters are the most widely used means to play one audio device through another
• Cassette Player AdaptersExisting tape player neededExcess wiring can get in the wayLimited signal quality
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Design Diagram
Signal from Audio DeviceSignal from
Audio Device
Transmit Converted FM signal
to FM receiver
Process Signal (Convert to FM
Signal)
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Implementation
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Design Specifications1. Operating Frequency: Operate throughout on the standard FM
radio range (87.9-107.9 MHz)
2. Weight: Target weight is eight ounces
3. FCC Requirements: Must be compliant with Part 15 of FCC regulations
4. Signal Clarity: The unit will be able to broadcast a stereosignal through the air
5. Packaging: Final product will be approximately 5” x 3” x 3”
6. User Interface: The unit will feature:• push-button style tuner • LCD to display the operating frequency• Input signal LED
![Page 9: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/9.jpg)
Design Specifications7. Durability: Must be resilient to the bumps and bruises that can occur to a portable device.
8. Power Requirements: Will operate off:• Four AA batteries• AC converter• 12V DC Adapter9. Cost:• Prototype Components: $80 – 90• Mass production costs approximately
10- 20% of our prototype cost
10. Audio Input: The converter will use RCA audio inputs.
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Benefits of RCA Connection
• Cord more commonly used and widely available• Greater versatility:
– RCA inputs offer the possibility to use both RCA and headphone outputs
• Increased cord life– Cords can be removable for storage
– User can replace worn or damaged cord without having to replace the entire unit
![Page 11: FM CONVERTER. Team Members Dan Harkins Team Leader Beau Blackwell George Henry Shawn Welch Dr. Georgios Lazarou Advisor.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f345503460f94c524ce/html5/thumbnails/11.jpg)
Benefits Over Tape Adapters
• Portability–No wires to connect to FM receiver–Light-weight–Can be used with any FM receiver
• Signal Clarity
– No tape “hiss”– Low interference– Automotive design minimizes interference
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Benefits of FM vs. AM
• More widely used than AM radio– Consumers more familiar with FM dial
• Better signal to noise ratio
• Less interference than AM radio– Nearby electronic devices can cause “noise”– Even weather can cause static on AM radio
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Typical Decibel S/N Ratios
AM broadcast / telephone: 25 dB (worst)
Audio Cassette Player: 35-45 dB
FM broadcast : 50-60 dB
Compact Disc: 90-105 dB (best)
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Design Constraints
Radio Frequency
Signal Strength
Operation Voltage
Antenna Efficiency
Signal to Noise Ratio
Reliability
Pspice
Matlab
Performance Test
O-Scop
e
Spectrum
Analyzer
Test Specifications
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Simulation
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Jan Feb Mar Apr May Aug Sep Oct Nov Dec
Prototype
Simulation
Performance Testing
Debugging
Research
Final Documentation
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FM CONVERTER