SMALL-SIZE DIRECTIONAL ANTENNA Russian patent published in 1996 - IPC

FIELD: room antennas for receiving television programs. SUBSTANCE: small-size antenna has two conducting semi-rings whose first two ends are connected to feeder. Resistor is inserted between its two second ends. Conducting semi-rings are flat in bending plane and arranged on first side of insulating plate. First two ends of these semi-rings are connected to feeder via strip slot and asymmetric lines. Ends of slot strip line are shorted out. Second side of insulating plate mounts bent conductor and contact pad. Bent conductor crosses in projection the gap between two conductors of slot strip line at distance equal to quarter the maximum working wavelength in slot strip line from its shorted-out ends to form in this point exciter. Contact pad is connected through jumper to shorted-out end of slot line. First conductor of strip line is screen of asymmetric line whose strip is section of bent conductor. Remaining section of bent conductor and metal deposit on first side of insulating plate connected to second conductor of slot line form open-circuit quarter-wave section of asymmetric strip line. EFFECT: improved design. 5 dwg