Miniature Planar Power Divider with Two Working Bandwidths

A power divider with two working bandwidths at 800 and 1800 MHz was studied. The overall dimensions of such a device were reduced due to the use of microstrip cells installed instead of conventional lines and bending of the connected stubs. Such a miniature power divider turned out to be 69% less than the full-sized design. In addition, the layout of a compact power divider, obtained by bending all transmission lines in the form of a meander, was considered, this approach showed the greatest efficiency, since with a decrease in area by 71.6%, it was possible to preserve its characteristics without major changes. The proposed devices were fabricated on a FR4 substrate with a thickness of 1 mm. The measured and theoretical characteristics are in good agreement.