ANALYSIS AND DESIGN OF A BROADBAND COPLANAR WILKINSON POWER DIVIDER AT X-BAND

摘要

The analysis and design methods of a broadband coplanar Wilkinson power divider are proposed in this paper. The novelty is that cascaded two sections of coupled asymmetrical coplanar strips (ACPSs) are utilized to obtain broadband performance over X-band and two resistors are used for isolation. The design equations are derived using even-and odd-mode analysis. The specific structure parameters for broadband performance over X-band are obtained through electronic design simulation tool and quasi-static conformal mapping technique. The power divider is fabricated on GaAs substrate and is compatible with GaAs MMIC process. The measured results of the power divider show close agreement with the simulation. The measured return loss S-11 is better than -15 dB across the entire X-band, 8-12 GHz. Good dividing and high isolation properties are also revealed through measurements. (C) 2016 Wiley Periodicals, Inc.