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http://dx.doi.org/10.5515/KJKIEES.2007.18.6.639

A Band Pass Filter with Directly Coupled Feeding Structure Using K-Inverter  

Kim, In-Seon (Agency for Defense Development)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.6, 2007 , pp. 639-647 More about this Journal
Abstract
This paper proposed the novel method that can realize the parallel coupled line(PCL) band-pass filter with directly coupled feeding structure by means of transforming the first and last PCL sections of the conventional PCL band-pass filter into K-inverters, then substituting T-type equivalence for K-inverter. The proposed method supplies simple design formulae and can considerably reduce time and efforts needed to optimize filter performance when compared to reported methods using external Q or equivalent parameters. On the basis of the proposed method, the band-pass filter using directly coupled feeding structure and having 18% fractional bandwidth was designed and fabricated. The validity of proposed method was proven by the measured result.
Keywords
External Q; Tapped-line; K-inverter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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