The application of tapering techniques to two-dimensional photonic bandgap (2D-PBG) microstrip structures allows great improvement in the sidelobe level of the S-11 scattering parameter and, consequently, a very flat passband. In this paper, many tapering windows are proposed for 2D-PBG canonical (straight microstrip line) stopband filters. By suitably designing three rows of tapered periodic structures which are characterised by different centre frequency of the stopband, a novel photonic bandgap lowpass filter was realised and characterised. Numerical simulations show satisfactory agreement with experiments.
Tapered photonic bandgap microstrip lowpass filters: design and realisation / Bozzetti, M; D'Orazio, A; De Sario, M; Petruzzelli, V; Prudenzano, F; Renna, F. - In: IEE PROCEEDINGS. MICROWAVES, ANTENNAS AND PROPAGATION. - ISSN 1350-2417. - STAMPA. - 150:6(2003), pp. 459-462. [10.1049/ip-map:20030542]
Tapered photonic bandgap microstrip lowpass filters: design and realisation
Bozzetti M;D'Orazio A;De Sario M;Petruzzelli V;Prudenzano F;
2003-01-01
Abstract
The application of tapering techniques to two-dimensional photonic bandgap (2D-PBG) microstrip structures allows great improvement in the sidelobe level of the S-11 scattering parameter and, consequently, a very flat passband. In this paper, many tapering windows are proposed for 2D-PBG canonical (straight microstrip line) stopband filters. By suitably designing three rows of tapered periodic structures which are characterised by different centre frequency of the stopband, a novel photonic bandgap lowpass filter was realised and characterised. Numerical simulations show satisfactory agreement with experiments.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
