Abstract
We propose a design for broadband waveguide mode conversion based on gradient index metamaterials (GIMs). Numerical simulations demonstrate that the zeroth order of transverse magnetic mode or the first order of transverse electric mode (TM0/TE1) can be converted into the first order of transverse magnetic mode or the second order of transverse electric mode (TM1/TE2) for a broadband of frequencies. As an application, an asymmetric propagation is achieved by integrating zero index metamaterials inside the GIM waveguide.
Highlights
We propose a design for broadband waveguide mode conversion based on gradient index metamaterials (GIMs)
It is a one dimensional parallel-plate waveguide with two GIMs attached to its outer perfect electric conductor (PEC) walls
We have proposed a broadband mode converter which consists of a waveguide with two slabs of gradient index metamaterials coated on its sides
Summary
We propose a design for broadband waveguide mode conversion based on gradient index metamaterials (GIMs).
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