A New Wideband 3dB Power Divider for Dual Band Applications

The rapid advancement of wireless standards has necessitated the need for multiband radio frequency (RF) components. The power divider is one component that plays a key role in the performance of a wireless transceiver. In this paper, a compact dual-band 3dB wideband power divider (PD) is presented for dual band applications. A coupled line transformer is also proposed as quarter wavelength transmission line (TL) transformer. The design formula for the dual band operation for the quarter wavelength transformer is also derived in section II of the paper. The proposed circuit is obtained by replacing conventional TL of two section PD with a proposed coupled line quarter wavelength transformer. Specifically, the PD is designed for 1 GHz and 2 GHz operating frequencies are simulated using Agilent Technology's Advanced Design System tool. The simulated results of the power divider validate the theoretical results.