Resonant grids and their use in the construction of submillimetre filters

Abstract

The properties of self-resonant grids are discussed, indicating the dependence of the resonant frequency, bandwidth and high frequency rejection upon the grid geometry. It is shown that certain scalings are particularly suited for use in the production of cooled bandpass filters, and for solving some of the problems encountered with the more usual Fabry-Pérot techniques. Special emphasis is laid upon the use of such filters in ground-based submillimetre astronomy. © 1983.