An Ultra Compact Luzzatto Power Divider using Miniaturized Stubs and Folded Structure

An ultra compact three-way Luzzatto power divider is presented in this paper. To minimize its planner size, six quar-ter-wavelength microstrip lines are folded, while the length of three half-wavelength microstrip lines are reduced by adding several open stubs and folded structure. The proposed circular structure occupies only 1/4 of the area compared with Luzzatto prototype. Simulated and measured results exhibit good port symmetry and phase consistency, low insertion loss, low return loss and high isolation in the band of 2.0- 2.8 GHz.