NON-PROTRUDING ANTENNA ON CONDUCTIVE SURFACE OF FRAME OF OBJECT Russian patent published in 1995 - IPC

FIELD: radio engineering. SUBSTANCE: two points of outer conductive surface of frame of object spaced by distance smaller than half-length of wave are connected by two sections of coaxial cable with symmetric output of transmitter (or symmetric input of receiver) through holes in frame of object closed by stoppers made of dielectric. Two variants of connection circuit of symmetric output of transmitter through adapter incorporating two transformers to spaced points over outer surface of frame of object exclude branching of currents to inner surface of frame of object and to outer surface of screens of supply feeders and allow wide-band non-protruding antenna of practically any shape to be realized on outer conductive surface of object without insertion of insulating inserts into frame to provide for effective radiation of radio waves with lengths commensurable to dimensions of frame or having bigger sizes. EFFECT: expanded application field to mobile objects. 2 cl, 2 dwg