Two-wave antenna for telephones used in vehicles

摘要

A two-wave antenna for telephones used in vehicles which includes two radiating elements in which one end of each of the two radiating elements is respectively connected to one end of a single phase coil and the effective radiating lengths of the two radiating elements are respectively 1/2 lambda 1 to 5/8 lambda 1 and an electrical length of the phase coil is 3/2 lambda 1 to 5/4 lambda 1 so that currents of the same phase and two frequency bands are carried in the two radiating elements and wherein lambda 1 is the wavelength of the first band.