NON-PROTRUDING RING SLOT ANTENNA Russian patent published in 1999 - IPC

FIELD: antenna equipment. SUBSTANCE: invention can be used in the capacity of conformable receiving and transmitting antenna for mobile objects with curvilinear surfaces. Non-protruding ring slot antenna has metal body made in the form of inverted truncated cone completed with cylinder with flange to anchor dielectric cover and antenna proper on location place arranged coaxially to body. Inside body of antenna there are placed metal plate, volumetric metal element presenting truncated cylinder which section surface has curvature same as curvature of surface on which antenna is mounted and dielectric plate with one-side metallization oriented upwards and having form of octagon with maximal size not exceeding diameter of volumetric metal element. Volumetric metal element is located closely to dielectric cover on side of curvilinear surface and immediately adjacent to metal plate on side of base. Metal plate is fabricated in the form of disc with four protruding open-circuit stubs and four short-circuit stubs connected to it and shorted to side walls of body. In this case analogous stubs are placed with step of 90 degrees and each group of analogous stubs is displaced relative to another group by 45 degrees. Four short-circuit stubs are positioned on dielectric plate with one-side metallization under corresponding short-circuit stubs of metal plate and are electrically connected to them. Feeding line that is continuation of central conductor of high-frequency connector located outside body of antenna in center of its base is connected to geometric center of metallization of dielectric plate. EFFECT: capability of mounting of antenna on curvilinear surface with simultaneous expansion of band of operational frequencies. 2 dwg