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Yagi Transceiver Extender

Yagi Transceiver Extender. University of Idaho Lee VanGundy. Background. Yagi-Uda Antenna Directional antenna Invented by Shintaro Uda and Hidetsugu Yagi in 1926 First wide spread use during WWII for airborne radar. Basic Design. Deflector Driven Element (dipole)

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Yagi Transceiver Extender

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  1. Yagi Transceiver Extender University of Idaho Lee VanGundy

  2. Background • Yagi-Uda Antenna • Directional antenna • Invented by Shintaro Uda and Hidetsugu Yagi in 1926 • First wide spread use during WWII for airborne radar

  3. Basic Design • Deflector • Driven Element (dipole) • Parasitic Element (director) http://www.radio-electronics.com/info/antennas/yagi/yagi.php

  4. Designing • Made use of online calculator • Inputs • Desired Frequency • Element Wire Gauge size • Element Material

  5. Materials • ½x¾” 3 ft piece of molding • 12 AWG stripped copper wire 3-4 ft. • RP-SMA Cable • Drill(Drill press preferred) • Wire clippers • Soldering iron • Ruler

  6. Building • Measured drilled holes to elements • Drilled to fit • Measured and cut elements • Modified cable and soldered to driven element

  7. Testing • Measured distance between Antenna and Range • Standard Antenna • Yagi Antenna

  8. Results Standard Antenna Yagi Antenna

  9. Results YagiContinued Antenna turned out to be omni-directional

  10. Reasons for Problems • Online calculator • Measurements • Spacing • Lengths

  11. Conclusions • It was nice to build something that worked, but it would have been nice to have an antenna that was directional

  12. Thanks to… • Dan Mathewson for using a drill press to drill the holes • Seth Thompson for aiding in my testing

  13. Questions ?

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