The software assumes that the domain between the port boundary and the boundary projected by the port offset is straight, while maintaining a constant cross-sectional shape.Zone electrophoresis separating a mixed sample of two proteins into two well-resolved concentration peaks. When active, the de-embedded S-parameter phase is automatically scaled based on the offset value and the propagation constant.
The de-embedding functionality is triggered automatically when the port offset is set to a nonzero value. De-embedded ports are useful, for example, to partition an assembly of microwave components in a different way than that of the original CAD model. Ports can now be de-embedded by specifying a port offset parameter, and the phase of the corresponding de-embedded S-parameters can be adjusted, based on the value of the port offset. The RF Module now features a Material Library with material properties for more than 60 substrate materials to assist in modeling RF, microwave, and millimeter-wave circuit boards.Īn edge launch connector test circuit board: the dB-scaled electric field norm (filled contours) and arrow plot of the electric field (surface) shows where the electric field is confined on a coplanar waveguide (CPW) circuit board. The simulation can be run with a 10 times finer frequency resolution in a similar amount of time as with the discrete sweep simulation.Īpplication Library paths for examples using the new Adaptive Frequency Sweep study step: RF_Module/Antennas/microstrip_patch_antenna_inset RF_Module/Antennas/pifa_handheld RF_Module/Couplers_and_Power_Dividers/wilkinson_power_divider RF_Module/EMI_EMC_Applications/antenna_ebg RF_Module/EMI_EMC_Applications/frequency_selective_surface_csrr RF_Module/Filters/cylindrical_cavity_filter_evanescent RF_Module/Filters/lumped_element_filter RF_Module/Filters/notch_filter_srr RF_Module/Filters/pcb_microwave_filter_with_stress RF_Module/Filters/tunable_cavity_filter RF_Module/Filters/waveguide_iris_filter RF_Module/Passive_Devices/rf_coil RF_Module/Transmission_lines_and_Waveguides/substrate_integrated_waveguide New RF Material Library for Substrates The AWE method has been available in previous versions, but not in an easy-to-access dedicated study type.įor the waveguide iris filter model, an S-parameter comparison between adaptive frequency sweep and regular sweep is shown. frequency, then the simulation can be run using a very fine frequency resolution without much impact on performance. When the expression used for the AWE method represents a sufficiently slowly varying quantity vs. A user-defined expression can be entered for the error estimation as calculated by the AWE algorithm. The AWE expressions are automatically chosen based on the port settings, but can optionally be specified by user-defined expressions.
#COMSOL 5.3 NEW SERIES#
The asymptotic waveform evaluation (AWE) model reduction is performed by a moment matching technique where Padé approximation or a Taylor series expansion is used for the transfer function in a specified frequency interval. For example, you could compute the response of a linear or linearized model subjected to harmonic excitation for several frequencies.
The new Adaptive Frequency Sweep study type can be used to run models faster and with a fine frequency resolution by using a reduced-order model in the frequency domain. Browse all of the RF Module updates in more detail below. For users of the RF Module, COMSOL Multiphysics ® version 5.3a brings a new study step for running adaptive frequency sweeps, a Material Library for microwave and millimeter-wave circuit boards, an extended RF Part Library with edge launch connectors, and an example of a wideband radar cross section (RCS) calculation using time-explicit simulation.
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