Design of four-port wilkinson power divider using circular split ring resonator
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Date
2017-06
Authors
Nur Aiman Diyana Binti Mohd Hilda
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Abstract
Power divider is a device that split the input power to output power equally regardless how many ports it has. It is commonly applied to the antenna system, power amplifier, resonator, and mixers. In this project, it is focuses on how to design four-port Wilkinson power divider (WPD) with circular split ring resonator (SRR) by using the ADS. The function of circular SRR in this project is to increase the performance of four port Wilkinson power divider (WPD) when the size is reduced. The proposed power divider is used to show equal power splitting and good matching at all ports. Thus, it makes the device to perform with better performance. In this work, it is mainly focused on how to reduce the size of four-port WPD so that it will obtain good S-Parameters readings. Circular SRR is loaded onto the conventional WPD. The proposed design is fabricated using Rogers RO4003C printed circuit board with dielectric constant of 𝜀𝑟 , thickness of substrate, H, 0.813 mm and thickness of copper, t, 0.035 mm. The proposed design can be operated within S-band frequency range which is between 2 and 4 GHz. The simulation result were analyzed and compared theoretically and practically so that it achieve the requirement of S-Parameters. By comparing the results of conventional and combined design, the return loss of both designs are – 38.13 dB and -14.78, respectively with regards to 20% of size reduction from conventional design.