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We design a compact reconfigurable antenna suitable for integrable communication systems based on spatial modulation. This recent technique is a simple implementation of multiple-input multiple-output communication scheme. The reconfigurable antenna is based on a meander line radiating element surrounded by two L-shaped wire resonators connected to a metallic ground plane with two PIN diodes. By switching...
Studying a finite size array of closed sub-wavelength resonators, we show that we gain control on the array modes when cell resonances are different. Using such an array made of SRR, we build a multi-frequency metalens. In stead of using the sub-wavelength-varying modes as in classic metalenses, here we exploit mitigated localized modes to perform straightforward sub-wavelength far-field imaging....
A planar array of coupled split-ring resonators (SRRs) shows many resonances over a broad frequency band at which the structure efficiently emits waves. The mode splitting due to coupling offers an unprecedented way for configuring the radiation pattern of the SRR array. It is shown that specific radiation patterns that include dipolar and quadrupolar oscillation patterns can be constructed by varying...
The modeling and characterization of an optimized resonant cavity for a passive reconfigurable directive beam antenna near 10 GHz has been presented. It is based on a variable phase metamaterial made of an inductive and a capacitive grid where there is a regular increase of the gap spacing. This variable phase metamaterial allows us to have a forward and backward deflection of up to 30deg. An electronically...
We report the design of a steerable directive antenna using a resonant metamaterial-based subwavelength cavity. The cavity is made of a conventional ground plane and a composite metamaterial acting us a partially reflective surface. The antenna is a rectangular microstrip patch designed to operate near 10 GHz. The composite metamaterial is made of a variable capacitive grid and a constant inductive...
The modelling and characterisation of an electronically controllable metamaterial partially reflecting surface to a resonant cavity antenna near 8 GHz is considered. The metamaterial considered is composed of a composite phase varying metamaterial, by the insertion of active electronic components, and is proposed for the design of the reconfigurable Fabry-Perot cavity antenna. An adjustable resonance...
In this paper, an active metamaterial based on microstrip technology is proposed for the design of a steerable ultra- compact directive cavity. This composite metamaterial acts as a Partially Reflective Surface (PRS). It is made of a constant inductive grid and an active capacitive grid by the insertion of varicap diodes. The metamaterial negative reflection phase combined with the phase at the surface...
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