Wideband antenna mountable in vehicle cabin

摘要

An antenna (10) includes a radiation conductor unit (12) constructed with a plurality of radiation conductors (12a,12b) having different lengths which extend in parallel to each other from an electricity-supplying conductor (13) and a grounded conductor unit (14) which opposes said plurality of radiation conductor in an approximately parallel manner with a predetermined distance therebetween. The radiation conductor unit and the grounded conductor unit are contained in an insulating casing (11a,11b) constructed by a pair of cases which is fixed to each other. The casing is provided with a plurality of projections (17a-17e) for positioning the radiation conductor unit and the grounded conductor unit.