Power divider based on vertical elliptical directional couplers with increased isolation and bandwidth

Abstract

In this study, a novel high-isolation wideband divider based on multi-layer elliptical defected ground structure coupler is presented along with its analytical theory and design procedure. The proposed divider could be conveniently applied for high- power applications with less loss for the absence of isolation resistors. The simulation results show that in 3.1–10.6 GHz, the return loss S(11) and S(22) are −4 dB within 4–9 GHz, and the amplitude and phase difference between port 2 and port 3 is <1 dB and 2°, respectively.

Keywords

• directional couplers
• defected ground structures
• power dividers
• power divider
• vertical elliptical directional couplers
• novel high-isolation wideband divider
• multilayer elliptical defected ground structure coupler
• analytical theory
• design procedure
• isolation resistors
• high-power applications
• return loss
• insertion loss
• frequency 3.1 GHz to 10.6 GHz
• S(23)
• S(21)
• S(31)
• S(11)
• S(22)