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A PROPOSED MODEL OF OPEN STUB HAIRPIN-COMB BANDPASS FILTERS WITH TWO ATTENUATION POLES | ||
| AL-TAQANI | ||
| Article 1, Volume 25, Issue 3, 2012, Pages 0-0 | ||
| Authors | ||
| Jamal. M. Rasool; Saad H. Abdul Razzaq | ||
| Abstract | ||
| In this paper, a proposed design of bandpass filter is introduced . A new stubs are applied to the bandpass filter to enhance 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 The University . two attenuation poles are realized at the upper band and the lower band respectively, one at 1.71GHz and one at 1.93GHz. Sharp roll-off on both sides of the passband is obtained. Measured results show good selectivity at both upper and lower bands | ||
| Keywords | ||
| bandpass filter; two attenuation poles | ||
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