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Compact dual-mode rectangular waveguide filters using square ridge resonators

Published online by Cambridge University Press:  22 June 2009

Simone Bastioli ,
Luca Marcaccioli  and
Roberto Sorrentino
Simone Bastioli*
Affiliation:
University of Perugia, DIEI, Via G. Duranti 93, 06125 Perugia, Italy.
Luca Marcaccioli
Affiliation:
RF Microtech srl, Via G. Duranti 93, 06125 Perugia, Italy.
Roberto Sorrentino
Affiliation:
University of Perugia, DIEI, Via G. Duranti 93, 06125 Perugia, Italy.
*
Corresponding author: S. Bastioli Email: bastioli@diei.unipg.it
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Abstract

A new class of compact rectangular waveguide filters is proposed in this paper. The key element is a square ridge resonator realized within a rectangular waveguide supporting the fundamental TE10 mode. The square ridge can support two modes resonating along orthogonal directions in the gap between the ridge and the opposite waveguide wall. This structure enables dual-mode degeneracy without the need of oversized cavities, thus allowing for considerable size reduction with respect to the conventional dual-mode implementations. Different filter structures employing one or more ridges within short waveguide sections are proposed as attractive solutions for pseudo-elliptic band-pass or dual-band filters. The experimental results of a manufactured fourth-order pseudo-elliptic pass-band filter validate the feasibility of the proposed class of filters.

Keywords

Bandpass filtersDual-mode filtersElliptic filtersRidge waveguideTransmission zeros (TZs)Waveguide filters
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 1 , Special Issue 4: European Microwave Week 2008 , August 2009 , pp. 241 - 247
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2009

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References

REFERENCES

[1]Williams, A.E.: A four-cavity elliptic waveguide filter. IEEE Trans. Microwave Theory Tech. (1970 Symp. Issue), MTT-18 (1970), 1109–1114.CrossRefGoogle Scholar
[2]Atia, A.E.; Williams, A.E.: New types of waveguide bandpass filters for satellite transponders. COMSAT Tech. Rev., 1 (1971), 21–42.Google Scholar
[3]Cameron, R.J.: Dual-mode realizations for asymmetric filter characteristics. ESA J., 6 (1982), 339–356.Google Scholar
[4]Liang, X.P.; Zaki, K.A.; Atia, A.E.: Dual-mode coupling by square corner cut in resonators and filters. IEEE Trans. Microwave Theory Tech., 40 (1992), 2294–2302.CrossRefGoogle Scholar
[5]Lastoria, G.; Gerini, G.; Guglielmi, M.; Emma, F.: CAD of triple-mode cavities in rectangular waveguide. IEEE Microwave Guided Wave Lett., 8 (1998), 339–341.CrossRefGoogle Scholar
[6]Guglielmi, M.; Jarry, P.; Keherve, E.; Roquebrun, O.; Schmitt, D.: A new family of all-inductive dual-mode filters. IEEE Trans. Microwave Theory Tech., 49 (2001), 1764–1769.CrossRefGoogle Scholar
[7]Bastioli, S.; Marcaccioli, L.; Sorrentino, R.: A novel class of compact dual-mode rectangular waveguide filters using square ridge resonators, In 38th European Microwave Conf. Proc., Amsterdam, The Netherlands, October 2008, 626–629.Google Scholar
[8]Bastioli, S.; Marcaccioli, L.; Sorrentino, R.: Waveguide pseudoelliptic filters using slant and transverse rectangular ridge resonators. IEEE Trans. Microwave Theory Tech., 56 (2008), 3129–3136.Google Scholar
[9]Amari, S.; Rosenberg, U.; Bornemann, J.: Adaptive synthesis and design of resonator filters with source/load-multi-resonator coupling. IEEE Trans. Microwave Theory Tech., 50 (2002), 1969–1978.Google Scholar