A 8-output compact broadband Wilkinson power divider in LTCC technology

Recently, there has been significant interest in passive devices fabricated using LTCC technology, for which makes the 3D structure of the transmission lines realizable. In this paper, a compact broadband 8-output Wilkinson power divider at 0.5~1.5GHz in LTCC technology is presented. The power divider is designed in two-section to achieve the broadband, and some λ/4impedance transformations are used to broaden the line width, for reaching the technical requirements in LTCC. The simulation results show a phase error of less than +/- 3° and a power imbalance at output port of less than 0.4dB from 0.5~1.5GHz. The insertion loss is better than 2.8dB and isolation is better than 15dB. The whole size of the multilayer integrated device is 25mm×25mm×2.1mm.