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Compact single and dual band zero-degree metamaterial N-way radial power combiner/divider

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4 Author(s)
Dupuy, Alexandre ; Rayspan Corporation, 11975 El Camino Real, St. 301, San Diego, California, 92130, U.S.A ; Gummalla, A. ; Achour, M. ; Poilasne, G.

This paper introduces different types of N-way metamaterial radial power combiners/dividers. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner/divider. Metamaterial ldquoMTM technologiestraderdquo allow designing transmission lines with an electrical length of zero degree. The first design presented in this paper uses a 0deg MTM line that reduces the size to one third of the conventional N-way radial divider. This size reduction improves overall performance by injecting fewer losses into the system and increasing the bandwidth of the radial power combiner/divider. Dual-band properties of metamaterial are exploited in a second approach to design a dual-band MTM N-way power combiner/divider. In this second case MTM lines have a zero degree phase at a chosen frequency and 180deg phase at a second chosen frequency which is not a multiple of the first one. This dual-band radial power combiner/divider is smaller than a conventional 180deg single band radial power combiner/divider. Simulation and measurement data is presented in this paper for these different devices.

Published in:

Microwave Symposium Digest, 2008 IEEE MTT-S International

Date of Conference:

15-20 June 2008