This paper presents 2-way Power Divider (PD) for Ultra-Wideband (UWB) applications. The proposed power divider is realized using two cascaded sections of Wilkinson Power Divider (WPD) of equal characteristic impedances and unequal electrical lengths with inserted open stub to improve matching, isolation and to broaden the bandwidth. It is proved analytically using the "Even Odd Mode" analysis method and the ABCD matrix to obtain exact closed-form design equations. A detailed design methodology is introduced to facilitate the implementation without needing CAD optimization. To verify the proposed design methodology, a 2-way power divider is designed, fabricated on a Rogers RT/Duroid 5880 substrate and compared to other published 2-way microstrip power dividers. Measured data show good agreement with Electromagnetic (EM)-Circuit Co-Simulation, which proves the design equations and methodology. The proposed planar 2-way PD achieves an isolation ≥ 13.5 dB, input return loss ≥ 10 dB, output return loss ≥ 14.5 dB and exceeded insertion loss ≤ 0.9 dB (over the −3 dB splitting ratio) through the whole UWB range from 3.1 GHz to 10.6 GHz. Furthermore, it has a compact area of 22 mm × 15 mm, which provides 50% enhancement over similar microstrip PD circuits while achieving better isolation and matching.

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This paper presents a single stage 2-way Wilkinson Power Divider (WPD) suitable for Internet of Things (IoT) low frequency applications in the band from 200 MHz to 1 GHz. It is realized using a meandered line, and an open shunt stub matching network is added to get a compact structure. Moreover, a Vertical Periodic Defected Ground Structure (VPDGS) is added below each arm in order to improve the performance at the center frequency without adding extra length to the divider. The size of the proposed power divider is 30 × 15.3 mm 2 (0.082λ g × 0.041λ g ). The fabricated power divider achieves a fractional bandwidth of 107%, an input return loss of better than 10 dB, an output return loss of 20 dB, an isolation of better than 10 dB, and maximum exceeded insertion loss of 0.9 dB. The proposed compact power divider is implemented on Rogers RT/Duroid 5880 with thickness 0.254 mm in order to bend on any conformal surface.

In this paper, the analysis and design of a compact Ultra-Wideband (UWB) Wilkinson Power Splitter (WPS) is presented. The proposed splitter consists of two sections Wilkinson power splitter of equal characteristic impedances and unequal electrical lengths with a single stub on each section. The proposed power splitter examined analytically using the "Even Odd Mode" analysis method and the ABCD matrix. The simulation is done using Agilent ADS circuit and EM simulator. The proposed structure achieves an input return loss, S 11 better than 12.2 dB, an output return loss, S 22 and S 33 better than 19.59 dB, output ports isolation, S 23 and S 32 better than 12.75 dB and insertion loss, S 21 and S 31 from 3.15 to 3.41dB through the whole UWB range from 3.1 GHz to 10.6 GHz. Furthermore, the power splitter has a compact size of 18.38 * 10.25 mm 2 compared to other similar networks.