Title :
A Michelson-Type Interferometer for Microwave Measurements
Author :
Lengyel, Bela A.
Author_Institution :
Naval Research Laboratory, Washington, D.C.
Abstract :
The optical Michelson interferometer is modified by replacing one of its branches by a directional coupler and a waveguide. The instrument serves many purposes, among which are: precision wavelength determination, the measurement of dielectric constants of materials available in sheet form, the determination of reflection from laminated sheets at normal incidence, the study of metal-loaded dielectrics and of parallel-plate metal lens media. An instrument operating at 3.2 cm is described.
Keywords :
Dielectric constant; Dielectric materials; Dielectric measurements; Directional couplers; Inorganic materials; Instruments; Microwave measurements; Optical interferometry; Optical waveguides; Wavelength measurement;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1949.234601
