Miniaturized Inline Bandpass Filters Based on Triple-Mode Integrated Coaxial-Waveguide Resonators

This work presents a design technique to implement miniaturized cross-coupled bandpass filters in inline physical configurations based on triple-mode resonators. Triple-mode resonances are obtained by using integrated coaxial-waveguide cavity resonators. They consist of two coaxial conducting posts...

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Vydáno v:IEEE access Ročník 11; s. 1
Hlavní autoři: Sandhu, Muhammad Y., Afridi, Sharjeel, Lamecki, Adam, Gomez-Garcia, Roberto, Mrozowski, Michal
Médium: Journal Article
Jazyk:angličtina
Vydáno: Piscataway IEEE 01.01.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
3-D filter
Band-pass filters
bandpass filter
Bandpass filters
Cavity resonators
Coaxial components
coaxial filter
Coaxial waveguides
Coupled modes
Coupling
Couplings
Electromagnetic wave filters
Electromagnetic waveguides
Filtering theory
inline filter
microwave filter
Microwave filters
Rectangular waveguides
Resonator filters
Resonators
textcolor{Black}3-D filter
Three-dimensional displays
transmission zero (TZ)
waveguide filter
ISSN:2169-3536, 2169-3536
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Abstract This work presents a design technique to implement miniaturized cross-coupled bandpass filters in inline physical configurations based on triple-mode resonators. Triple-mode resonances are obtained by using integrated coaxial-waveguide cavity resonators. They consist of two coaxial conducting posts placed in the sidewalls of a rectangular waveguide cavity. In the proposed triplet, a transmission zero (TZ) can be positioned at any of the two sides of the passband by simply locating the coaxial posts either on the same wall or on opposite walls of the rectangular waveguide cavity. Coaxial-to-waveguide mode coupling is implemented by means of coupling screws, which adds flexibility in terms of tuning easiness. Three 9.9-GHz proof-of-concept prototypes corresponding to third- and sixth-order integrated coaxial-waveguide bandpass filters are designed at the electromagnetic-simulation level. Furthermore, the triplet with a TZ below the passband is manufactured and characterized to experimentally validate the engineered 3-D RF filter principle and its underlying design theory.
AbstractList This work presents a design technique to implement miniaturized cross-coupled bandpass filters in inline physical configurations based on triple-mode resonators. Triple-mode resonances are obtained by using integrated coaxial-waveguide cavity resonators. They consist of two coaxial conducting posts placed in the sidewalls of a rectangular waveguide cavity. In the proposed triplet, a transmission zero (TZ) can be positioned at any of the two sides of the passband by simply locating the coaxial posts either on the same wall or on opposite walls of the rectangular waveguide cavity. Coaxial-to-waveguide mode coupling is implemented by means of coupling screws, which adds flexibility in terms of tuning easiness. Three 9.9-GHz proof-of-concept prototypes corresponding to third- and sixth-order integrated coaxial-waveguide bandpass filters are designed at the electromagnetic-simulation level. Furthermore, the triplet with a TZ below the passband is manufactured and characterized to experimentally validate the engineered 3-D RF filter principle and its underlying design theory.
Author Sandhu, Muhammad Y.
Afridi, Sharjeel
Gomez-Garcia, Roberto
Mrozowski, Michal
Lamecki, Adam
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  organization: Faculty of Electronics, Telecommunications, and Informatics, Gdańsk University of Technology, Gdansk, Poland
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SubjectTerms 3-D filter
Band-pass filters
bandpass filter
Bandpass filters
Cavity resonators
Coaxial components
coaxial filter
Coaxial waveguides
Coupled modes
Coupling
Couplings
Electromagnetic wave filters
Electromagnetic waveguides
Filtering theory
inline filter
microwave filter
Microwave filters
Rectangular waveguides
Resonator filters
Resonators
textcolor{Black}3-D filter
Three-dimensional displays
transmission zero (TZ)
waveguide filter
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Title Miniaturized Inline Bandpass Filters Based on Triple-Mode Integrated Coaxial-Waveguide Resonators
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