to energize the various slot bays or each slot may be separately fed from a feed line 16 also line 16 is preferably bent at 90 u00b0 immediately upon leaving the cavity running along the cavity rear to the array end both to reduce feed line effect on patterns and because such arrays are usually vertical and therefore fed from one end fig2 6 show individually fed bays which may be arrayed and fed by a conventional corporate feed system on the other hand a single strip line 43 feeding a plurality of bays 12 spaced about u03bb apart between slot centers along the cavity axis in face 14 shown in fig7 the unitary strip line 43 is energized from a single two wire conductor 16 it will be noted that the slot of the single unitary cavity 11 is subdivided by shorting bars 17 across the slot to form a linear series of bays forming an array each bay fed by a strap 24 of the design described above relative to fig2 in summary the main feature of the disclosure is a broadband slot antenna which utilizes a wide slot and wide long feed strap between the feed point and the slot edge which feed strap contrary to conventional practice does not follow a short path between feed point and slot edge but rather is at least one and a half times the direct path length and may run close to the cavity wall and thereby become capacitively coupled thereto the antenna may be composed of an array of such slots which may be fed independently or from a common feed line as is well recognized in the art an antenna will.