DOUBLE microstrip directional coupler on lines with side belt

摘要

The invention relates to radio engineering devices ultrahigh frequency (UHF) and can be used in the measurement technique, particularly in the antenna feedlines control their functioning during operation. Dual microstrip directional coupler on the lines from the lateral connection, formed on a dielectric board with single-sided metallisation and the intermediate seal between the board and the bottom of the metal casing, closed metal cover which has a thickness of board pads and the size of the board to cover the frequency range from 20 to 300 MHz to 2 mm, 0.2 mm and 6 mm, respectively, and the dielectric constant board substrate materials have the values ​​10 and 2, respectively. Fct 1, 2 Fig.