Learn by doing, the Tin Can Radar Forum

Posted by: | on November 3, 2012

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6 Comments  to  Learn by doing, the Tin Can Radar Forum

  1. jhonascate says:
    November 3, 2012 at 4:58 pm

    any suggestions on the ideal material of the can? would wrapping the inside of the can with aluminum foil or another metal be helpful? thanks

  2. jhwill says:
    November 5, 2012 at 7:01 pm

    Greg is correct that the type of metal is not important for the antenna operation (pattern, gain, and polarization). But it is important when decided on how to connect the coaxial cable. Here is one design that uses a Pringles can. http://www.oreillynet.com/etel/blog/2001/07/antenna_on_the_cheap_er_chip.html

    I think Greg’s design calls for a bulkhead SMA connector and a Tin plated can. So you just solder the connector to the can which makes a good electrical and mechanical connection. Larger connectors and other metals can be connected with fasteners. But if you use a cardboard can that has an aluminum foil lining then it will be difficult to make a good connection. The above site ignores the electrical connection and uses epoxy to strengthen the joint. This may be “good enough” for a communications type application, but the reduced isolation may be noticeable in the radar application.

  3. wukong says:
    November 9, 2012 at 6:35 pm

    Digi-Key no longer carries the MAX414CPD opamp. Neither does Mouser or Jameco. Is there a substitute or other source?

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