Waveguide filters with ridged and unequal width resonators

Yildirim, N.; Hizal, A.

doi:10.1109/mwsym.2005.1516906

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…In [37], for instance, an inductive filter with dielectric resonators with a good spurious-free band has been proposed. The well-known concept of changing the resonator widths to improve the out-of-band performance has also been exploited in [38] and [39]. In another contribution [40], a structure was proposed to improve the stop-band performance by varying the width of each resonator, as well as the offsets between adjacent resonant cavities.…”

Section: Introductionmentioning

confidence: 99%

Compact Wideband Hybrid Filters in Rectangular Waveguide With Enhanced Out-of-Band Response

Valencia

Boria

Guglielmi

et al. 2020

IEEE Trans. Microwave Theory Techn.

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This paper describes the design procedure of a compact wideband waveguide filter, based on stepped impedance resonators (SIR) and a combined usage of capacitive and inductive coupling irises, that provides a significant improvement in the out-of-band response of the filter with respect to the state-ofthe-art. In addition to theory, several filter prototypes have been designed and manufactured. A detailed sensitivity analysis has been also carried out. Finally, simulations and measurements are compared, showing very good agreement, thereby fully validating the new filter topology. Index Terms-Aggressive space mapping, band-pass filters, hybrid (inductive and capacitive) irises, stepped impedance resonator and wideband.

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Section: Introductionmentioning

confidence: 99%

Compact Wideband Hybrid Filters in Rectangular Waveguide With Enhanced Out-of-Band Response

Valencia

Boria

Guglielmi

et al. 2020

IEEE Trans. Microwave Theory Techn.

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show abstract

“…Another approach is the well-known technique of changing the width of the resonators, as discussed in [49] and [50], with the objective of improving the out-of-band performance. In another contribution, a rectangular waveguide band-pass lter has been proposed [51], where an important improvement of the stop-band performance is obtained changing the width of each resonator together with the osets between adjacent resonant cavities.…”

Section: Improved Inductive Filtersmentioning

confidence: 99%

New Wide-Band Capacitive Filter Structures in Rectangular Waveguide Technology With Enhanced Out-of-Band Response

Sullca¹

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The main objective of this doctoral thesis is the development of new capacitive ltering structures in rectangular waveguide that are able to provide wide bandwidths in the passband and improve, at the same time, the out-of-band response. These new guided structures have been developed in order to oer new technological solutions for high-frequency microwave lters, with a variety of dierent transfer functions, addressing specically the needs of future telecommunication systems for both ground and space applications.In this context, therefore, we discuss in this document the study, design and manufacture of several types of microwave lter in rectangular waveguide that show a signicant improvement with respect to the state-of-the-art. The new solutions that we propose are obtained by introducing simple modications in the structure of classic microwave lters. Several techniques based on hybrid irises, stepped impedance resonators, staircase conguration and E-plane T-junctions with shorted stubs or manifold connections, are successfully used in order to meet the very demanding specications of future systems for both ground and space applications. Furthermore, an additional current challenge faced by all designers of microwave components is the need to reduce both their physical size and mass (or weight). To address this issue, we discuss in this document the use of resonant apertures in rectangular waveguide, introducing a new family of lters which can be used to implement complex single and dual-band transfer functions with signicant size and mass reduction.In the following chapters of this doctoral thesis, each subject is discussed in detail including the basic theoretical formulations, design procedures, the results of full-wave electromagnetic simulations, manufacturing considerations, and the measured performance of a number of prototypes. Excellent agreement is found in all cases between measurement and simulations, thereby fully validating both the novel structures discussed and their design procedures.

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Design of a micromachined waveguide bandpass filter for Terahertz application

Xie

Zhang

et al. 2012

2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)

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Waveguide filters with ridged and unequal width resonators

Cited by 4 publications

References 5 publications

Compact Wideband Hybrid Filters in Rectangular Waveguide With Enhanced Out-of-Band Response

Compact Wideband Hybrid Filters in Rectangular Waveguide With Enhanced Out-of-Band Response

New Wide-Band Capacitive Filter Structures in Rectangular Waveguide Technology With Enhanced Out-of-Band Response

Design of a micromachined waveguide bandpass filter for Terahertz application

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