Numerical model of several dgerent waveguide sections connected in series (the waveguide transducer) is presented in this work. The concrete application of this model will be calculation of scattering and transmission parameters of novel mm-wave integrated phased array [1-3/ input unit -the waveguide transducer @om standard empty waveguide to layered ferrite-dielectric waveguide. To solve this complex electrodynamic problem the numerical method, different from usually appliedfinite elements method, was used.
In the report data of experimental research of three-layer ferrite-dielectric waveguides (FDW) in millimeter wave band has been represented. These waveguides are a basis of integrated phased arrays (IPA) with electrical control of beam position. IPA itself is founded on a travelling wave antenna principle. The maximum size of such antenna is determined by losses in the waveguide. The level of these losses for main FDW mode has been experimentally measured. It appeared to be in the range of 0.25-0.27 dB/cm, that is 30% less than values obtained earlier. It is experimentally established, that in existing samples of IPA up to 30% of RF power is radiated by feeding transition. These facts open perspectives of creation of IPA with beamwidth 1.3-1.5 degrees.Indm Terms -ferrite, mm-wave, integrated phased array, electrical scanning, narrow beam.
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