Compact elliptic-function coplanar waveguide low-pass filters using backside metallic patterns

Miguel Durán-Sindreu, Jordi Bonache, Ferran Martín

Producció científica: Contribució a una revistaArticleRecercaAvaluat per experts

18 Cites (Scopus)

Resum

In this letter, compact elliptic-function low-pass filters (LPF) implemented in coplanar waveguide technology by etching stepped impedance resonators (SIR) in the back substrate side, are presented. The required transmission zeros of the elliptic-function response are provided by the shunt connected SIRs. As an illustrative example, an order-3 prototype LPF with 1 GHz cutoff frequency is designed and fabricated. The measured stop-band rejection is better than 30 dB up to 6.4 GHz, and a narrow transition band is obtained. To demonstrate the possibilities of the approach to synthesize arbitrary elliptic-function responses and order, a fifth-order elliptic LPF with 1 GHz cut-off frequency is also designed and fabricated. Filter dimensions are as small as 6.6 mm × 9.2 mm, i.e, 0.034λ × 0.047λ, for the third-order filter, and 12.1 mm × 13 mm (0.062λ × 0.067 λ) for the fifth-order filter, λ being the guided wavelength at cutoff. © 2010 IEEE.
Idioma originalEnglish
Número d’article5565378
Pàgines (de-a)601-603
RevistaIEEE Microwave and Wireless Components Letters
Volum20
DOIs
Estat de la publicacióPublicada - 1 de nov. 2010

Fingerprint

Navegar pels temes de recerca de 'Compact elliptic-function coplanar waveguide low-pass filters using backside metallic patterns'. Junts formen un fingerprint únic.

Com citar-ho