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QuickWave-3D can be applied to a variety of microwave and millimetre-wave problems including:
accurate S-parameter calculations of shielded and open microwave and millimetre-wave circuits, also in cases involving dispersion, multimodal propagation, and evanescent modes, covering in particular the circuits manufactured in microstrip, coplanar, coaxial, cylindrical waveguide, and dielectric guide technologies
calculations of radiation patterns, gain, radiation efficiency, radiation resistance, and return loss of antennas of various types (patch, horn, rod), rigorously taking into account irregular geometry, complicated corrugations, and inhomogeneous filling
calculations of input impedance of mobile phone antennas and of specific absorption rate in human tissues
calculations of heating patterns for microwave power applications, with accurate and fast display of instantaneous, time-maximum, and time-averaged patterns of fields and dissipated power
determination of eigenfrequencies, Q-factors, and pure modal field patterns for shielded and open inhomogeneous resonators, also in cases involving closely-spaced modes
calculations of embedding impedance for lumped elements
calculation of scattering patterns with plane wave excitation
QW-3D comprises two main functional blocks:
QW-Editor, which permits graphical definition of 3D structures, mesh generation, and specification of simulation parameters via a convenient system of dialogue boxes.
QW-Simulator, which conducts the FDTD calculations, extracts the desired frequency-domain parameters, displays all the computed fields and results, and allows saving them on disk.
In QW-Editor, shape and filling of arbitrary 3D circuits can be defined by picking up parameterised objects from object libraries. Moreover, the user can create his own objects by writing scripts in a simple UDO language. Manual operation with mouse and keyboard is also possible. QW-Editor provides an intuitive user interface with various kinds of visualisation windows, convenient dialogues, menu commands, and toolbar buttons.
Although QW-Editor automatically generates the FDTD mesh, the user is equipped with many means of controlling the meshing process, including the enforcement of global and local maximum cell size, mesh snapping planes, and mesh refinement in regions of expected rapid field variation.
QW-Simulator utilises state-of-the-art FDTD algorithms as well as many original models and procedures developed by the authors of the program during nearly two decades of intensive research on the time-domain electromagnetic modelling. The following features should be emphasised:
accurate and stable conformal representation of curved metal boundaries
higher-order modelling of media interfaces
wide-band modelling of skin effect in lossy metals
guaranteed spurious-free behaviour of the algorithm, also in the presence of strong spatial irregularities
matched modal excitation based on the field and impedance template, with user-controlled available power and various waveforms
lumped ports with user controlled available power or injected current
a new system of S-parameter extraction incorporating differential decomposition of fields into incident and reflected waves, template filtering for desired mode extraction, compensation for imperfect absorbing boundaries
extraction of S-parameters between transmission line ports, which support propagating and/or evanescent modes, and lumped ports
a variable source impedance technique for emulation of pure eigenmodes in inhomogeneous resonators
anisotropic boundary conditions (wire grids)
QW-Simulator also offers many ways of visualisation of simulated fields and calculated circuit characteristics, including:
hilltop, thermal, and vector display of instantaneous field values in any plane perpendicular to any of the coordinate axes
hilltop, thermal, and vector display of two-dimensional field envelopes in any plane perpendicular to any of the coordinate axes
hilltop, thermal, and vector display of SAR and dissipative power - instantaneous, maximum, and average values
3D vector display of electric field, magnetic field, and Poynting vector
field envelopes along any line parallel to one of the coordinate axes, with a possibility of virtual measurements of attenuation and SWR, or along a user-defined contour
field variation in time at any point, for TDR applications in particular, with possibility of virtual measurements of reflection coefficient and location of the discontinuity
S-parameters versus frequency in linear, quadratic or decibel scale, on Smith chart and in polar coordinates
radiation patterns versus angle accompanied by antenna efficiency, radiation resistance, and radiated power for a set of frequencies
scattering patterns
maximum, minimum, and average values of power dissipated in electric and/or magnetic field, and energy stored in electric and/or magnetic field, in the whole circuit or its selected subregions, and the resultant Q-factors
QuickWave-3D (QW-3D), is a universal user-friendly three-dimensional electromagnetic simulation package (winner of the European Information Technology Prize in 1998) based on the conformal FDTD method and supplemented with a range of unique models for curved boundaries, media interfaces, modal excitation, and parameter extraction.
Complete 3D electromagnetic simulation offer a set of various results from wide area of applications. A lot of processing/postprocessings present a complete offer of comprehensive solutions from microwave components (filters, couplers, resonators, etc.) through antennas, TDR applications, optimisation and parameter sweep to simulation of microwave heating process (with Basic Heating Module) with temperature dependent media, static, rotated or moved heated object(s), and heat transfer.
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