Collapsible reflectors

Full Title

Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q3/00; arrangements of such devices for guiding waves H01P3/20; variable for purpose of modulation H03C7/02) > Reflecting surfaces; Equivalent structures > comprising plurality of mutually inclined plane surfaces, e.g. corner reflector > Collapsible reflectors