We experimentally demonstrate a microwave far-field image reconstruction modality with the transverse resolution exceeding the diffraction limit by using a single layer of highly nonlinear metamaterial. The harmonic fields of the nonlinear metamaterial surface allow the far-field propagation of wave fronts with spatial frequencies several times higher than that of the fundamental field. Near-fi...

Nowadays, electromagnetic metamaterials is a rapidly growing research domain involving electromagnetism, microwave and millimetre wave technology, optics, material technology and nanotechnology. In particular, paper concerns about the utilization of split ring resonators in negative permeability meta materials, the concept and the production of an isotropic negative permeability medium, an isot...

We developed a new building block for constructing planar microwave circuitry: bulk titanium waveguide. The waveguide is formed by deep trench etching, dielectric gap filling, and planarization. The high aspect ratio of the resulting structure provides superior field confinement, low crosstalk, therefore a small footprint. To enable bulk titanium as a substrate compatible with microfabrication,...

Use of microwave photonic bandgap (PBG) structures is a promising approach to improving the performance of rf accelerator structures in terms of better control of wakefields. We have developed the Photonic Band Gap Structure Simulation (PBGSS) code to study bulk properties of electromagnetic TE and TM wave propagation in two-dimensional (2D) PBG structures. The eigenmodes are calculated and glo...

We report phase sensitive measurements of microwave propagation through a high mobility two dimensional electron gas subjected to a perpendicular magnetic field. Two types of configurations were used, one that allows all wave vectors q, and one that selects only specific q values. The spectrum of edge excitations was studied over a broad frequency span, which allowed us to observe the logarithm...

...........................................................................................1 Chapter One: Introduction ...............................................................2 Chapter Two: General Background ................................................3 2.1 Definition..............................................................................3 2.2 General Architecture ...............

We characterize the dispersion relation for electromagnetic-wave propagation in two-dimensional dielectric arrays, using the coherent microwave transient spectroscopy technique. Results of measurements along various symmetry directions of square and triangular lattices are presented. The experimental results are in excellent agreement with theoretical calculations made by using the plane-wave e...

We study the electromagnetic coupling of the array of Gaussian and multi-moded horn antennas to the dual-reflector submillimeterwave telescope on the ESA PLANCK Surveyor designed for measuring the temperature anisotropies and polarization characteristics of the cosmic microwave background. In this paper, we present the results of our analysis concerning the measurement of polarization with tilt...

Three full-wave codes for simulating microwave propagation and O-SX mode conversion in magnetized plasma are described compared. Their feasibility to investigate processes obtain efficiencies parameters relevant a potential MAST Upgrade 28 GHz electron Bernstein wave heating scenarios is explored.

In a circulating cavity magnon polariton (quantized spin wave plus photon, resonating in microwave chamber), the hybrid state and noninteracting photonic rotate opposite directions---an important phenomenon for generating chiral states of electromagnetic modes magnonics engineering, to impart angular momentum upon standing waves. This study demonstrates unidirectional nature mode propagation, p...