Wavelength measurements of decimetric, centimetric and millimetric waves
14 November 1942
Different types of available circuits are analysed and compared, and problems of coupling to the source to be measured, as well as the necessary indicating apparatus, are outlined. A wavemeter with co-axial lines, suitable for the ready measurement of decimetric and centimetric wavelengths, is described. For the shortest wavelengths of the band under consideration, dielectric guides or interferometer methods used in the infra-red waveband may be applied.