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Fractal Antennas - Fact or Fiction?

Discussion in 'Videos and Podcasts' started by VA7BIX, May 5, 2024.

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  1. VA7BIX

    VA7BIX Platinum Subscriber Platinum Subscriber QRZ Page

  2. W7UUU

    W7UUU Director, QRZ Forums Lifetime Member 133 QRZ HQ Staff Life Member QRZ Page

    I'm sure Chip @W1YW will be interested in this ;);)

    Dave
    W7UUU
     
    K0UO likes this.
  3. VE3CGA

    VE3CGA XML Subscriber QRZ Page

    might have something there for sota/ portable work.
    I've got some heavy duct tape that would make a good backing
    Wonder what the fractal size could be tuned for eficiency, I missed how he came to the 1" size
     
  4. W1YW

    W1YW Ham Member QRZ Page

    Not a fractal antenna. Itza MEANDER line, also called CRANK line.

    In the setup he made, the meander shortens the length (one-dimensional ) for resonance. It shortens the antenna but maintains physical length.

    A fractal version would be much shorter and still have excellent SWR.

    Some of the broad SWR is caused by the thickness of the meander (that is, not a 'thin' wire).

    Fractals and meanders do indeed allow broader matching with components (ATU's)

    A fractal (element) antenna has two or mores self similar iterations. This has one repeating motif.

    Springs are 3 dimensional meander line antennas. Commonly used on HT's.

    With due and sincere respect, I am not going to answer any more questions on this thread, because the topic is not on fractal antennas.

    Not discouraging having fun on this--keep it up:)

    73
    Chip W1YW
     
    Last edited: May 5, 2024
    KQ4GUI, W7UUU, K0UO and 1 other person like this.

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