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http://dx.doi.org/10.6109/jkiice.2015.19.10.2269

Miniaturized Narrow Band-pass Filter with λg/4 Short Stubs Using S-Shaped Folded Coupling Structure  

Yoon, Ki-cheol (RFIC Research Center, Kwangwoon University)
Kim, Seong-cheol (Department of Railroad Electrical System Engineering, Woosong University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.19, no.10, 2015 , pp. 2269-2274 More about this Journal
Abstract
In this paper, the reduced size in horizontal sizes of the narrow band pass filter (BPF) with λg/4 short stub using S shaped folded coupling structure is presented. This BPF with narrow bandwidth show flexible bandwidth with variation of the position of the stubs using the Qe(external quality factor) without changing the impedance value. On the other hand, by replacing the horizontal quarter-wavelength transmission lines with the equivalent S shaped coupled line, the BPF with reduced the size of horizontal can be realized. The proposed BPF shows the insertion loss of 1.46 dB and the return loss of 16.5 dB with bandwidth of 3.4 % at the center frequency of 5.8 GHz, respectively.
Keywords
Narrow Bandwidth; Short Stub; S-Shape; Miniaturized Size; Coupling Structure;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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