"The paper deals with the broadband modeling of microwave structures by finite-element methods. The attention is turned to original enhancements of accuracy, efficiency and stability of finite-element codes. The partial improvements are based on novel approximations both in the spatial domain and in the time one, in the adoption of complex frequency hopping, fast frequency sweep and envelope finite-element techniques. In the paper, a possible hybridization of approaches is discussed. Proposed finite-eleement schemes are applied to the analysis of canonical longitudinally homogeneous transmission lines in order to demonstrate their advantages."@en . . . "RIV/00216305:26220/05:PU51269!RIV06-GA0-26220___" . . "Broadband analysis of microwave structures by enhanced finite-element methods" . . "Radioengineering" . . "2"^^ . . "\u010Cl\u00E1nek popisuje \u0161irop\u00E1smov\u00E9 modelov\u00E1n\u00ED mikrovlnn\u00FDch struktur metodami kone\u010Dn\u00FDch prvk\u016F. Pozornost je soust\u0159ed\u011Bna na p\u016Fvodn\u00ED vylep\u0161en\u00ED p\u0159esnosti, efektivnosti a stability kone\u010Dn\u011B-prvkov\u00FDch k\u00F3d\u016F. Zlep\u0161en\u00ED jsou zalo\u017Eena na nov\u00FDch metod\u00E1ch aproximace prostorov\u00FDch i \u010Dasov\u00FDch pr\u016Fb\u011Bh\u016F veli\u010Din, na vyu\u017Eit\u00ED konceptu p\u0159eskakov\u00E1n\u00ED komplexn\u00EDho kmito\u010Dtu, na rychl\u00E9m kmito\u010Dtov\u00E9m rozm\u00EDt\u00E1n\u00ED ob\u00E1lkov\u00FDch kone\u010Dn\u00FDch prvc\u00EDch. V \u010Dl\u00E1nku se rovn\u011B\u017E zab\u00FDv\u00E1me mo\u017Enou hybridizac\u00ED metod. Navr\u017Een\u00E1 kone\u010Dn\u011B-prvkov\u00E1 sch\u00E9mata jsou aplikov\u00E1naa na anal\u00FDzu kanonick\u00FDch pod\u00E9ln\u011B homogenn\u00EDch p\u0159enosov\u00FDch veden\u00ED."@cs . "CZ - \u010Cesk\u00E1 republika" . "[06AF722B90CA]" . "514196" . "2"^^ . "RIV/00216305:26220/05:PU51269" . . . "Raida, Zbyn\u011Bk" . . . . "\u0160irokop\u00E1smov\u00E1 anal\u00FDza mikrovlnn\u00FDch struktur vylep\u0161en\u00FDmi metodami kone\u010Dn\u00FDch prvk\u016F"@cs . "Broadband analysis of microwave structures by enhanced finite-element methods"@en . . "The paper deals with the broadband modeling of microwave structures by finite-element methods. The attention is turned to original enhancements of accuracy, efficiency and stability of finite-element codes. The partial improvements are based on novel approximations both in the spatial domain and in the time one, in the adoption of complex frequency hopping, fast frequency sweep and envelope finite-element techniques. In the paper, a possible hybridization of approaches is discussed. Proposed finite-eleement schemes are applied to the analysis of canonical longitudinally homogeneous transmission lines in order to demonstrate their advantages." . . . . "1210-2512" . . . "Finite-element method, broadband modeling, time domain modeling, complex frequency hopping, envelope finite elements, fast frequency sweep."@en . . "\u0160irokop\u00E1smov\u00E1 anal\u00FDza mikrovlnn\u00FDch struktur vylep\u0161en\u00FDmi metodami kone\u010Dn\u00FDch prvk\u016F"@cs . . . . "48-57" . "26220" . "P(GA102/04/1079), P(GD102/03/H086), Z(MSM0021630513)" . . "4" . "10"^^ . "Motl, Milan" . "Broadband analysis of microwave structures by enhanced finite-element methods" . "Broadband analysis of microwave structures by enhanced finite-element methods"@en . "14" .