We present the design, fabrication and performance test of a quasi three-dimensional carpet cloak made of normal dielectric in the microwave regime. Taking advantage of a simple linear coordinate transformation we design a carpet cloak with homogeneous anisotropic medium and then practically realize the device with multilayer of alternating normal dielectric slabs based on the effective medium theory. As a proof-of-concept example, we fabricate the carpet cloak with multilayer of FR4 dielectric slabs with air spacing. The performance of the fabricated design is verified through full-wave numerical simulation and measurement of the far-field scattering electromagnetic waves in a microwave anechoic chamber. Experimental results have demonstrated pronounced cloaking effect in a very broad band from 8 GHz to 18 GHz (whole X and Ku band) due to the low loss, non-dispersive feature of the multilayer dielectric structure.Comment: 10 pages, 4 figures. Accepted in Appl. Phys. Let

In this paper, we present the design of a retrodirective reflector with dielectric cover on a planar conducting plane based on the transformation optics. By employing a simple linear coordinate transformation, the retrodirective reflector can be achieved with dielectric cover constructed with homogeneous birefringent dielectric medium, which reduces the complexity of practical realization. Such simple design allows us to further realize the retrodirective reflector by alternative layers of normal dielectrics based on the effective medium theory. The proposed design and a practical realization at microwave regime have been validated by full wave electromagnetic simulation, which demonstrates a broadband retrodirective response range from 5 GHz to 10 GHz

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In this paper, we present the design of two kinds of low-profile planar electromagnetic wave reflectors based on the transformation optics. By employing simple linear coordinate transformations, the planar reflectors can be achieved with dielectric cover constructed with homogeneous birefringent dielectric media, which reduces the complexity of practical realization. The proposed designs have been validated by full wave electromagnetic simulations. We believe the proposed design may be appliced to other reflectors with planar or low-profile features.