DUAL-PORT DUAL-BAND ANTENNA FOR RANGES OF HFW AND UHW2 Russian patent published in 2017 - IPC H01Q5/00 

FIELD: radio engineering, communication.

SUBSTANCE: antenna contains two separate emitters. The first emitter for the first range is made of cylindrical elements (CE) and a coaxial cable (CC) passed inside the CE. The length of the upper CE is less than the length of the lower CE. The upper and lower CEs are made in the form of respectively upper and lower cups. The bottom cup is turned upside down, its bottom is turned to the bottom of the upper cup. The CC exiting from the lower cup is connected to the connector of the first port, and the CC braid is connected to the bottom of the lower cup. The CC central core is connected to the bottom of the upper cup through the hole in the bottom of the lower cup. Inside the upper cup, there is a stepped rod electrically connected to the bottom of the upper cup, and the end of which is located outside the upper cup. The second emitter for the second range is made in the form of an asymmetrical vibrator connected through a choke to the upper edge of the conductive frame vertically oriented and embracing the first emitter with a gap. The bottom edge of the frame is connected to the connector of the second port.

EFFECT: possibility of simultaneous use of bands with a large frequency separation, the widening of the band of operating frequencies in the UHW2 range, improving the shape of the radiation pattern, increasing the gain and simplifying the design.

4 cl, 1 dwg