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Novel circuit models of arbitrary-shape line: Application to parallel coupled microstrip filters with suppression of multi-harmonic responses

Marc Le Roy 1, * André Pérennec 1
* Corresponding author
1 Lab-STICC_UBO_MOM_DIM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance, UBO - Université de Brest
Abstract : Following a hierarchical approach, several models are built in microwave-circuit design software to simulate and design many configurations of arbitrary-shape line. The global shape is controlled by a cubic spline interpolation; our purpose is, indeed, to make easier the handling of nonuniform structure for microwave device designers. To illustrate the potentialities of these new components, we designed a third-order bandpass coupled-line filter at 5.5 GHz. A sinusoidal strip-width perturbation is applied by using the new model of nonuniform symmetrical coupled-line. Associated to over-coupling of the resonator end, the first three spurious passbands are then suppressed.
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https://hal.univ-brest.fr/hal-00809266
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Marc Le Roy, André Pérennec. Novel circuit models of arbitrary-shape line: Application to parallel coupled microstrip filters with suppression of multi-harmonic responses. 35th European Microwave Conference, Oct 2005, Paris, France. pp.1-4, ⟨10.1109/EUMC.2005.1610077⟩. ⟨hal-00809266⟩

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