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)

1 Lab-STICC_UBO_MOM_DIM

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.

Domaines: Electronique

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⟩