Novel model design of compact dual notch-bands of attenuation for bandpass filters

الملخص EN

In this paper, a new micro strip model design of band pass filter is proposed.

Open stubs are applied to the band pass filter to refine the skirt selectivity on both sides of the upper and lower frequency band.

Two attenuation poles are produced by this new structure.

The upper band pole is introduced by the hairpin-comb structure.

The lower band pole is introduced by the tapped open stubs.

We fabricated a new structure using milling machine at the Lab in University of North Texas (UNT).

Two attenuation poles are realized at the upper band and the lower band respectively, one at 1.71 GHz and one at 1.93 GHz.

Sharp roll-off on both sides of the pass band is obtained.

Measured results show good selectivity at both upper and lower bands.