Balanced line for UHF one to four impedance transformation - modifies half wave phasing line to quarter wave line for insertion into symmetric antenna system to provide linear impedance transformation for all antennae

摘要

The line has two stretched parallel quarter wavelength coaxial conductors open on two sides. The conductors are of the same resistance and their inner conductors are connected in series. The tubes are mechanically connected and can be embedded in a carrier mast. Instead of tubular conductors with air dielectrics, loss adjusted coaxial cables can be used. If the asymmetrical coaxial conductors are replaced by a symmetrical parallel three-phase line, the middle conductor forms the symmetry axis and the transformation member for the quarter wavelength phasing line. The same function is carried out by a screen around a quarter wave phasing line in the form of a round or rectangular outer conductor with air insulator or the cladding of a two-line cable. Using a flexible parallel three-line flat cable, the inner conductor and coax. supply cable are connected. ADVANTAGE - Has low loss and is simple to install.