Log-Periodic Antenna

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log-periodic antenna

[′läg ‚pir·ē¦ad·ik an′ten·ə]
(electromagnetism)
A broad-band antenna which consists of a sheet of metal with two wedge-shaped cutouts, each with teeth cut into its radii along circular arcs; characteristics are repeated at a number of frequencies that are equally spaced on a logarithmic scale.

Log-Periodic Antenna

 

a type of a frequency-independent antenna with periodic repetition of the ratios of the characteristic dimensions of the adjoining components. The repetition obeys a logarithmic law in such a way that the ratio between the wavelength of the electromagnetic oscillations being radiated and the characteristic dimensions of the excited part of the antenna remains virtually constant over a wide frequency range.

References in periodicals archive ?
Balasingham, "Impulse radiating log-periodic dipole array antenna using time-reversal technique," IEEE Antennas and Wireless Propagation Letters, vol.
Anagnostou, "The design of reconfigurable planar log-periodic dipole array using switching elements," IEEE Antennas and Propagation Society International Symposium, 1-4, 2009.
Anagnostou, "The design of reconfigurable planar log-periodic dipole array (LPDA) using switching elements," IEEE Antennas and Propagation Society International Symposium, APSURSI'09, 1-4, June 1-5, 2009.