ECE 431 Radio Enclosure Design Project Vladimir Goncharoff.

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Presentation transcript:

ECE 431 Radio Enclosure Design Project Vladimir Goncharoff

Introduction ECE 431 – Analog Communication Circuits (RF Circuit Design)

Laboratory Project: AM Broadcast Band Receiver ( KHz) AM Broadcast Band Receiver ( KHz) Manual and Digital Tuning Manual and Digital Tuning Every student builds a radio Every student builds a radio Prototyping-style construction method Prototyping-style construction method

Manhattan-style construction:

Design Problem: There is too little space on the existing copper-clad board to allow for expansion and experimentation

Solution Approach: Redesign the radio enclosure to accommodate a larger circuit board (or boards)

Research Identify needs and wants Identify needs and wants Survey prospective customers Survey prospective customers Study existing designs Study existing designs Brainstorm design alternatives Brainstorm design alternatives

Desired Enclosure Features Increased circuit board area than the existing design Easy to manufacture Low materials cost Helps with constructing and testing the radio circuits Low EMI with the outside world Low EMI between different sections of the radio Aesthetically pleasing appearance Sturdy

Existing Radio Enclosure Design

Possible Improved Enclosure Designs Cross-Section Sketches

Design Alternative #1 6” x 12” single- sided board

Design Alternative #2 5” x 6” double-sided board

Design Alternative #3 Two 5” x 6” single- sided boards

Design Alternative #4 Two 5” x 6” single- sided boards

Design Decision Matrix CriterionWeighting Factor Design #1 Rating Design #2 Rating Design #3 Rating Design #4 Rating a91058 b74 ($5.00) 10 ($2.45) 8 ($3.20) 8 ($3.20) c35 (130 in 2 ) 6 (110 in 2 ) 8 (80 in 2 ) 10 (50 in 2 ) d10 (+18 in 2 ) 5 (+8 in 2 ) 5 (+8 in 2 ) 5 (+8 in 2 ) e f3758 g58 6 h8 379 i85 77 j68 74 Weighted Sum:

Design Alternative #1 is “best”

3-D Models of the Final Design

Dimensioned Drawings: Assembly View

Exploded Assembly View with Parts List

Dimensioned Individual Part Drawings

Assembly Instructions Putting together the 9x12 enclosure v2.wmv Assembly Instructions Putting together the 9x12 enclosure v2.wmv Putting together the 9x12 enclosure v2.wmv Putting together the 9x12 enclosure v2.wmv

the end

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