Log-periodic antenna
（重定向自LPDA）
![Log-periodic antenna, 400–4000 MHz](/Images/godic/202501/25/LPDA-Antenna3127.jpg")
![](/Images/godic/202501/25/136_to_174_MHz_base_station_antennas3127.jpg")
![Log-periodic antenna, 250–2400 MHzLog periodic mounted for vertical polarization, covers 140-470 MHzLP television antenna 1963. Covers 54-88 MHz and 174-218 MHz. Slanted elements were used because on the upper band they operate at the 3rd harmonic.Wire Log-periodic monopole antenna.](/Images/godic/202501/25/Schwarzbeck_UHALP_9108_A3127.jpg")
![](/Images/godic/202501/25/VHF_UHF_LP-antenna_closeup3127.JPG")
A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is a multi-element, directional, antenna designed to operate over a wide band of frequencies. It was invented by Dwight Isbell and Raymond DuHamel at the University of Illinois in 1958.