access icon free Dual-band bandstop filter using stub-loaded resonators with sharp rejection characteristic

© The Institution of Engineering and Technology
Received 24/10/2012, Published

Dual-band bandstop filters using open-circuited stub-loaded resonators are presented. The first and second resonant frequencies of the open-circuited stub-loaded resonator can be flexibly controlled by tuning the length and position of the open-circuited stub. To illustrate the concept, a dual-band bandstop filter has been designed, fabricated and measured. The prototype of the dual-band bandstop filter achieved attenuation of 42 and 44 dB at 2.4 and 5.2 GHz.

Inspec keywords: band-stop filters; resonator filters

Other keywords: frequency 5.2 GHz; frequency 2.4 GHz; dual-band bandstop filter; resonant frequencies; sharp rejection characteristic; open-circuited stub-loaded resonator

Subjects: Filters and other networks; Waveguide and microwave transmission line components

References

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      • Ma, Z., Kikuchi, K., Kobayashi, Y., Anada, T., Hagiwara, G.: `Novel microstrip dual-band bandstop filter with controllable dual-stopband response', Proc. Asia–Pacific Microw. Conf., December 2006, Yokohama, Japan, p. 1174–1177.
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