Average Characteristic Impedance Formula

Discussion in 'Antennas, Feedlines, Towers & Rotors' started by KY8D, May 4, 2020.

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  1. KY8D

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    A question about the formula below which solvse the average characteristic impedance of a DIPOLE and is taken from page 7-12 of 23rd edition of ARRL Antenna Book.

    Q1.Is there an equivalent formula for a cubical quad element?
    Q2. Ditto for a wire skeleton saw-tooth element.
    Q3. Ditto for a wire skeleton rectangular element.

    To be used in a calculator for matching boom impedances of log periodic antennas with all four types of elements.

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