Ogival cross-section combined microwave waveguide for reflector antenna feed and spar support therefor

A microwave antenna feed support for supporting a microwave antenna feed relative to a reflector, comprising a spar of ogival cross-section defined by two arcuate walls symmetrical about a common chord and meeting one another at acute angles to form edges of the spar, the spar having one end which is supported near a rim of the reflector, another end which connects to the antenna feed, and an internal surface of highly conductive material, and being internally cross-dimensioned with respect to the microwave wavelength to serve also as a waveguide for feeding microwave energy to and/or from the antenna feed, and further wherein the spar is terminated at said ends thereof by circular flanges of larger transverse dimensions and having rectangular waveguide transition apertures within and bounded by the ogival cross-section.