Title :
A Wide-Band Directional Coupler for Wave Guide
Author_Institution :
University of Michigan, Ann Arbor, Mich.
Abstract :
The frequency range over which most types of directional couplers will operate is rather limited. This is especially true of wave-guide couplers, since the impedance of the guide changes with frequency. A new type of coupler is described which uses a small loop that responds to both the electric and the magnetic fields. When used in conjunction with a special section of ridge wave guide, it is possible to obtain excellent directional characteristics over a two-to-one frequency range.
Keywords :
Coaxial cables; Directional couplers; Impedance; Magnetic field measurement; Power transmission lines; Probes; Radio frequency; Transmission line measurements; Voltage; Wideband;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1946.232587
