Eccleston, K.W.Zong, J.2009-12-212009-12-212009Eccleston, K.W., Zong, J. (2009) Implementation of a Microstrip Square Planar N-Way Metamaterial Power Divider. IEEE Transactions on Microwave Theory and Techniques, 57(1), pp. 189-195.0018-9480http://hdl.handle.net/10092/3296This paper describes a compact square-shaped 20-way metamaterial power divider implemented in microstrip technology and lumped capacitors and inductors. The divider comprises 12 square tiles exhibiting left-handed behavior and 13 square tiles exhibiting right-handed behavior arranged in a checkerboard tessellation (or mosaic). The divider relies upon the infinite wavelength phenomena in two dimensions and this requires the left-handed tiles have an insertion phase between any two of its sides equal to, but with opposite sign, of that of the right-handed tiles. To achieve tessellation, both tile types must be the same size. The design method is based upon an analytic formulation, and was applied to the realization of a 20-way power divider operating at 1 GHz that uses surface-mount lumped components. The resulting divider was 50 mm by 50 mm. Over a 10% bandwidth, the measured insertion loss was less than 1.3 dB, the measured couplings track within plusmn1 dB and plusmn6deg , and the measured input port return loss and isolation was greater than 20 dB. This level of isolation was achieved without isolation resistors. Equal in-phase power division to output ports on the square-shaped periphery allows compact integration with other planar circuit modules in a combined amplifier. The design method can be extended to N-way power division where N is an odd integer multiple of 4.en"©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE."Infinite wavelengthleft-handed materialsmetamaterialsmicrostripmicrowave circuitsnegative refractive indexpower combiningpower dividersJournal ArticleFields of Research::290000 Engineering and Technology::290900 Electrical and Electronic EngineeringFields of Research::290000 Engineering and Technology::290900 Electrical and Electronic Engineering::290902 Integrated circuitshttps://doi.org/10.1109/TMTT.2008.2009037