New Directional Coupler with Reduced Dimensions and a Wide Frequency Band in Modern Maritime Communications

In microwave technology, the actual problem of reducing the overall dimensions of the device. To increase the bandwidth of the directional coupler, the number of connected loops increases, which entails an increase in area. Therefore, the dimensions of such devices must be miniaturized. Artificial transmission lines have been proposed that made it possible to reduce the area of the coupler on the microwave substrate by 3.8 times. The negative fact of the use of artificial lines is the deterioration of the characteristics of the device in marine communication at sea.