A Capacitively Coupled Waveguide Filter with Wide Stop-Band

Menzel, Wolfgang; Müller, Andreas; Bogelsack, F.

doi:10.1109/euma.2003.340804

Cited by 11 publications

(6 citation statements)

References 5 publications

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“…An alternative is the use of capacitive irises as discussed in [30] and [31]. Several advanced contributions for band-pass filters, using capacitive low-pass structures as irises to provide a wide spurious free out-of-band response, can indeed be found in [32] and [33], for instance. The use of capacitive irises in band-pass filters, however, may result in very small gaps leading to high-power limitations.…”

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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“…However, problems linked to the use of capacitive irises are the appearance of unwanted resonances below the filter passband and, possibly, high-power limitations. An additional example of the use of capacitive structures is shown in [15], where low-pass structures (capacitive shunt coupling) are used in the resonator with the objective of improving the stopband attenuation.…”

Section: Introductionmentioning

confidence: 99%

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

Sullca

Guglielmi

Cogollos

et al. 2021

IEEE Trans. Microwave Theory Techn.

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The objective of this article is to describe the design of a new family of wideband filters in a rectangular waveguide based on hybrid couplings and a staircase configuration. The use of E-plane T -junctions and E-plane folded structures is also discussed, in order to enhance the out-of-band response and the selectivity of the filter with respect to the current state of the art. The design of several hybrid filter prototypes is discussed in detail, including manufacturing sensitivity and high-power analysis. Finally, simulations and measurements for an eight-pole filter prototype are also compared, showing very good agreement, thereby fully validating both the design procedure and the new filter topology that we propose.

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“…These undesired responses degrade the filter performance and may be critical in some applications in which sharp steepness and wide out‐band response are required. There have been numerous effective approaches for spurious suppression of waveguide filters [1–9]. In [1] the usual spurious passbands of standard waveguide filters are suppressed incorporating low‐pass filter structures into the coupling elements of the filter.…”

Section: Introductionmentioning

confidence: 99%

“…There have been numerous effective approaches for spurious suppression of waveguide filters [1–9]. In [1] the usual spurious passbands of standard waveguide filters are suppressed incorporating low‐pass filter structures into the coupling elements of the filter. Using transmission zeros in the stopband response of the filter is the other strategy for suppressing the spurious responses.…”

Section: Introductionmentioning

confidence: 99%

Waveguide filter with improved stopband response using transversal slots

Mehrshahi

Rezaiesarlak

Salehi

2011

Int J RF and Microwave Comp Aid Eng

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In this article, the design and realization of waveguide filter with improved stop-band response is presented. By inserting transversal slots at the proper position of cavities, without disturbing the field distribution of the dominant mode, the second longitudinal resonant modes are radiated out. This caused the out-of-band frequency response of the filter to be improved. The validity of the proposed technique is confirmed by comparison between measurement values and simulation results from the finite element method through the commercial software (high frequency structure simulator). Also, to assure electromagnetic compatibility the slot surfaces are covered by absorbing material. V C 2011 Wiley Periodicals, Inc.Int J RF and Microwave CAE 21:234-239, 2011.

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A Capacitively Coupled Waveguide Filter with Wide Stop-Band

Cited by 11 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

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

Waveguide filter with improved stopband response using transversal slots

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