Method and apparatus for broadband performance in a tapered slot antenna

摘要

An apparatus (61) for an array antenna (10), comprising: a pair of flare (31, 32) having electrically conductive material defining a slot (41) with first and second ends; an electrically conductive (81) member extending generally transverse to said slot (41) in the region of said first end thereof, and a portion of balun (93) communicating with said first end of said slot (41 ), said portion of balun (93) having a high impedance and is configured to provide a selected degree of absorption energíaelectromagnética, wherein the portion of said balun (93) includes a resistive portion (18) comprising a Prompter like portions sheet extending approximately transversely centerline dedicha groove (41) and being spaced from said first end of said slot, said resistive portion (18) quefacilita said selected degree of absorption of electromagnetic energy, wherein said portion of balun (93) includes an electrically conductive portion (12, 28, 91) which, in a plane containing the center line (51) of said slot (41) extends completely around said resistive portion (18), except where dichoprimer end of said slot (41) communicating with said balun portion (93).