A VHF log-periodic antenna is a broadband self-tuning antenna. The
VHF log periodic antenna consists of a number of
parallel active elements arranged in order of length, with the
shortest at one end and the longest at the other..
At the lowest frequency of operation, the longest element of
the VHF log periodic antenna is resonant, and all
other elements act as directors. At the highest frequency, the
shortest element resonates and the other (longer) elements act as
reflectors In the middle of the frequency band, one of
the other elements of the VHF log periodic antenna
is resonant; elements shorter than the resonant element act as
directors; and elements longer than the resonant element act as
reflectors.
Other topics in our resources on Antennas related to VHF Log Periodic Antenna include: