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Manufacturer

Part Number or Numbers

Logarithmic Periodic Broadband Antennas

LOGARITHMIC PERIODIC (LP OR LOG-PERIODIC)

BROADBAND ANTENNAS

Standard LPDA

 

Biconic Logarithmic Periodic Antennas (Hybrid)

 

Stacked Logarithmic Periodic Broadband Antennas

 

Dual Polarised LPDA

Description of a log-periodic Antenna
A log-periodic antenna (LP), also known as a log-periodic array or logarithmic periodic, is a multi-element, directional, narrow-beam antenna that operates over a broad band of frequencies.
A LP antenna normally consists of a series of dipoles positioned along the antenna axis, spaced at intervals following a logarithmic function of the frequency.

log-periodic antenna (LP)
It is normal to drive alternating elements with 180° (π radians) of phase shift from one another. This is normally done by connecting individual elements to alternating wires of a balanced transmission line.

 Schwarzbeck LPDA Antenna Troubleshooting Guide