Advanced Filtering Waveguide Components for Microwave Systems

Pajovic, Snezana Stefanovski; Potrebić, Milka; Tošić, Dejan V.

doi:10.5772/66228

Cited by 3 publications

(9 citation statements)

References 27 publications

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“…This is an important property for the multi-band filter design. Some of the previously reported printed-circuit discontinuities with multiple resonant frequencies can be found in [3,6,24,[26][27][28].…”

Section: Resonating Inserts With Csrrsmentioning

confidence: 99%

“…Since the resonating circuits are connected in parallel, inverters are needed between them [4,29]. For the waveguide filter design, an inverter can be deployed as a quarter-wave waveguide section at the center frequency of interest, as explained in [3,6].…”

Section: Third-order Filter Using Csrrsmentioning

confidence: 99%

“…This means that each waveguide section representing inverter has to be of the proper length equal to λ g /4 (λ g is guided wavelength in the waveguide), for each center frequency. Therefore, the folded inserts have been introduced as an adequate solution [3,6,25,27,28], being a novel solution at the same time, compared to the available open literature.…”

Section: Multi-band Bandpass Filter Designmentioning

confidence: 99%

“…A filter design procedure consists of several steps, which assume specification, approximation, synthesis, simulation model, implementation, study of imperfections and optimization [1,2]. The purpose of each step can be briefly explained as follows [3]. Design starts by setting the criteria (a filter specification) to be met for potential application.…”

Section: Introductionmentioning

confidence: 99%

“…Along with the three-dimensional electromagnetic (3D EM) models, equivalent microwave circuits are generated and, for the chosen examples, the obtained results are also experimentally verified. Bearing in mind the operational frequency band and implementation technology, these filters can be used as components of radar and satellite systems of various purposes [3].…”

Section: Introductionmentioning

confidence: 99%

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Design of microwave waveguide filters with effects of fabrication imperfections

Mrvić¹,

Stefanovski-Pajovic²,

Potrebić³

et al. 2017

FACTA U EE

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This paper presents results of a study on a bandpass and bandstop waveguide filter design using printed-circuit discontinuities, representing resonating elements. These inserts may be implemented using relatively simple types of resonators, and the amplitude response may be controlled by tuning the parameters of the resonators. The proper layout of the resonators on the insert may lead to a single or multiple resonant frequencies, using single resonating insert. The inserts may be placed in the E-plane or the H-plane of the standard rectangular waveguide. Various solutions using quarter-wave resonators and splitring resonators for bandstop filters, and complementary split-ring resonators for bandpass filters are proposed, including multi-band filters and compact filters. They are designed to operate in the X-frequency band and standard rectangular waveguide (WR-90) is used. Besides three dimensional electromagnetic models and equivalent microwave circuits, experimental results are also provided to verify proposed design. Another aspect of the research represents a study of imperfections demonstrated on a bandpass waveguide filter. Fabrication side effects and implementation imperfections are analyzed in details, providing relevant results regarding the most critical parameters affecting filter performance. The analysis is primarily based on software simulations, to shorten and improve design procedure. However, measurement results represent additional contribution to validate the approach and confirm conclusions regarding crucial phenomena affecting filter response.

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Section: Resonating Inserts With Csrrsmentioning

confidence: 99%

Section: Third-order Filter Using Csrrsmentioning

confidence: 99%

Section: Multi-band Bandpass Filter Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design of microwave waveguide filters with effects of fabrication imperfections

Mrvić¹,

Stefanovski-Pajovic²,

Potrebić³

et al. 2017

FACTA U EE

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Generalized Synthesis Technique for High-Order Low-Profile Dual-Band Frequency Selective Surfaces

Eleftheriades

Hum

2018

IEEE Trans. Antennas Propagat.

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Novel implementation of dual-band bandstop waveguide filter using quarter-wave resonators

Mrvić¹,

Stefanovski²,

Potrebić³

et al. 2015

Tehnika

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U radu se prikazuje nova realizacija mikrotalasnog filtra sa dva nepropusna opsega učestanosti u talasovodnoj tehnici. Četvrttalasni rezonatori realizovani su u planarnoj tehnici, a prilikom istraživanja korišćeni su kao rezonantne prepreke postavljene unutar talasovoda. Razmatraju se rezonatori sa jednom rezonantnom učestanosti i njihove ekvivalentne šeme. Izvršena je detaljna analiza odziva posmatranih rezonatora u cilju projektovanja filtra drugog reda sa jednim nepropusnim opsegom. Ispituje se sprega između dva rezonatora postavljena na istoj štampanoj pločici. Realizovan je filtar drugog reda sa dva nepropusna opsega primenom navedenih rezonatora i predloženog metoda projektovanja. Predloženi metod projektovanja filtara otvara mogućnost za realizaciju filtra višeg reda sa više nepropusnh opsega. Ključne reči: četvrttalasni rezonator, filtar nepropusnik opsega učestanosti, filtar sa dva nepropusna opsega, rezonantna prepreka, talasovodna tehnika SUMMARY NOVEL IMPLEMENTATION OF DUAL-BAND BANDSTOP WAVEGUIDE FILTER USING QUARTER-WAVE RESONATORS Novel implementation of microwave waveguide filter with two rejection bands is presented in this paper. Quarter-wave resonators are implemented in planar technology, and in the research, they are used as resonant septa inserted in the waveguide. Resonators with single resonant frequency are considered, as well as their equivalent circuits. The observed resonator responses are analyzed in details, in order to design second-order filter with a single rejection band. Mutual coupling between the resonators on the same printed-circuit insert is investigated. The second-order filter with two stopbands is implemented using observed resonators and the proposed method for filter design. The proposed method for filter design opens possibility for realization of higher order filters with multi-stopbands.

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Advanced Filtering Waveguide Components for Microwave Systems

Cited by 3 publications

References 27 publications

Design of microwave waveguide filters with effects of fabrication imperfections

Design of microwave waveguide filters with effects of fabrication imperfections

Generalized Synthesis Technique for High-Order Low-Profile Dual-Band Frequency Selective Surfaces

Novel implementation of dual-band bandstop waveguide filter using quarter-wave resonators

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