초록 ▼

A resonant cavity having at least one radiating antenna slot formed in a wall of the cavity includes an electrically conducting plate disposed within the cavity and substantially spaced from all internal cavity walls so as to effectively lengthen the electrical resonant dimensions of the cavity for

A resonant cavity having at least one radiating antenna slot formed in a wall of the cavity includes an electrically conducting plate disposed within the cavity and substantially spaced from all internal cavity walls so as to effectively lengthen the electrical resonant dimensions of the cavity for a given physical size. This slotted cavity antenna permits the use of simplified feeding structures, provides a more efficient antenna structure and reduces the necessary physical dimensions of the structure for operation at a given frequency.

대표청구항 ▼

A crossed slot antenna comprising: a resonant cavity having plural intersecting radiating slots formed in one wall thereof, an electrically conductive plate disposed within said cavity and substantially spaced from all internal cavity walls thereby lengthening the effective electrical resonant dimen

A crossed slot antenna comprising: a resonant cavity having plural intersecting radiating slots formed in one wall thereof, an electrically conductive plate disposed within said cavity and substantially spaced from all internal cavity walls thereby lengthening the effective electrical resonant dimensions of the cavity for a given physical size of cavity, and r.f. feed means electrically connected to at least one point on said plate, substantially removed from its midpoint, for feeding r.f. signals to/from each of said plural slots via said plate with predetermined respectively corresponding relative phase relationships.