access icon free Frequency-agile microstrip patch antenna on a biased liquid crystal substrate

A frequency-agile microstrip patch antenna printed on a biased nematic liquid crystal (N-LC) substrate is accurately modelled. The dielectric properties of the N-LC are controlled through the strength of the bias voltage. The model is based on the solution of Poisson's equation coupled to a nonlinear partial differential equation (PDE) describing the orientation of the directors in a non-homogeneous electric field. The coupled problem was solved using an iterative finite difference (FD) scheme. The obtained numerical results are compared and verified against measurements already published in the literature.

Inspec keywords: liquid crystal devices; nonlinear differential equations; iterative methods; nematic liquid crystals; finite difference methods; microstrip antennas; Poisson equation

Other keywords: iterative finite difference method; frequency agile microstrip patch antenna; nonhomogeneous electric field; director orientation; biased liquid crystal substrate; Poisson equation; biased nematic liquid crystal substrate; nonlinear partial differential equation

Subjects: Single antennas; Differential equations (numerical analysis); Nonlinear and functional equations (numerical analysis); Liquid crystal devices

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2014.3856
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